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What's NewJune 2009 - FEMtools 3.3.2 Maintenance Release Dynamic Design Solutions announces the release of FEMtools 3.3.2. This maintenance release provides several extensions and corrections to the NASTRAN and ANSYS interfaces and solves minor issues with some commands and API functions. V3.3.2 is also needed to use interface files generated with the new ANSYS 12. Customers with current support and maintenance can find more information on this release and how to download the installation packs in the FEMtools Support site. A login name and password is required to access the support pages. If you have a current Maintenance and Support contract and did not yet receive a login name and password, then register at http://www.femtools.com/support.htm or send a request to support@femtools.com License files for FEMtools v3.3.0 and v3.3.1 remain valid for v3.3.2.
June 2009 - FEMtools 3.4 Announced Dynamic Design Solutions announces the upcoming release of FEMtools 3.4. This major release will introduce new functionality for meshing, model updating and structural optimization in addition to numerous improvements and extensions to existing tools. Some of the highlights of this version are the following: Mesh Generation Function Library A function library is added to generate surface and volume meshes from a definition of the geometry (vertex, curve, surface). Unstructured surface meshes can be generated for generic surface patches and volume meshes are obtained from 2D meshes with operations like extrusion and revolving. This new FEMtools API function library complements the already available lattice-based mesh deformation ('morphing') and provides the functionality to mesh very complex geometries. It can be used for applications like parametric meshing for shape optimization, meshing design spaces for topology optimization or to implement mesh coarsening and refinement tools. Mesh Quality Functions to verify the quality of imported or generated finite element meshes are now included. Quality metrics like aspect ratio, convexity, taper, warp angle and others can be computed on the fly and visualized with color-coded mesh graphics. Results can be further post-processed by computing histograms or sorting mesh quality values. Additional mesh quality metrics can be implemented using the FEMtools Script programming language. New Out-of-Core Solvers For the analysis of large finite element models that cannot be solved in memory, the FEMtools solvers for static and eigenvalue analysis are now available with out-of-core option. Together with the use of system matrix reduction, and superelements, this new solver option enables the analysis of very large models. Rigid Body Properties Extraction (RBPE) From FRF Measurements This new add-on tool is used to obtain the mass (M), center of gravity (CoG) and mass moments of inertia (MoI) from the low-frequency portion of measured accelerances (FRFs). These properties can be used as targets for finite element model updating, or to reduce components to lumped masses for model reduction in structural dynamics simulations or motion analysis. ODS-based Model Updating Experimentally obtained vibration shapes (Operational Deflection Shapes or ODS) can now be used to update stiffness, mass and damping parameters if information is available on the dynamic excitation forces. These forces can be measured themselves, for example as forcing displacements, velocities or accelerations and are applied to the finite element model. From the differences between simulated and experimentally-obtained ODS, conclusions can be drawn on required adjustments of stiffness, mass and damping. This new functionality is completely integrated within FEMtools Model Updating and can complement other updating types like using mode shapes or FRFs as reference responses. An important application of ODS-based model updating is monitoring of vibrating machinery for damage and structural health. Postprocessing of Local Model Updating Results By using efficient data management and powerful algorithms for sensitivities and model updating, FEMtools can handle very large numbers of updating parameters. Model updating using local element parameters like thickness or elastic modulus may result in a large number of updated properties that can vary from element to element. This is a standard strategy for explorative model updating to obtain information on local changes that may be required. Results must be interpreted in terms of changes that may be required to geometric refinement or mesh density. Such updated models, however, are not suitable for further analysis due to the large number of property cards in the finite element model. New postprocessing tools are now available to regroup elements based on their properties into a lower and practical number. Structural Optimization using DOE/RSM Design of Experiments (DOE) and Response Surface Modeling (RSM) was already available in FEMtools 3.3 for applications in model updating. In FEMtools 3.4 these methods have now been integrated in FEMtools Optimization and can be used with generic optimization parameters, objective functions and constraint equations. Design of experiment (DOE) techniques aim at sampling the design space of a problem in an efficient way. The main goal of DOE is to obtain the required information with a minimum number of sampling points, as the evaluation of each sampling point requires an additional run of the FE-model. FEMtools provides the following designs: factorial designs, central composite designs, Latin hypercube designs, D-optimal designs, and user-defined designs. Response Surface Modeling (RSM) is used to build an approximate model to predict the response of the system in function of the design parameters. This approximate model can then be used to optimize the response of the considered system instead of the finite element model of which it was derived. FEMtools 3.4 is due September 2009 and is ready for Windows 7. More information will become available in the next months.
June 2009 - Dynamic Design Solutions to Present a Course on Model Updating at OMAC II Workshop Dynamic Design Solutions invites you to attend the upcoming OMAC II workshop September 24-25, 2009 in Aalborg, Denmark. This two-days event is relevant for engineers and researchers working within the area of Operational Modal Analysis. You will learn to setup your tests, perform and validate your measurements, analyze your data and validate your results. In addition, you can get extensive training on finite element model correlation and updating using results obtained from Operational Modal Analysis. Please click here to view a PDF file with the OMAC invitation. OMAC II is organized by:
May 2009 - DDS Participated in Workshop on Structural Safety Assessment of Tall Buildings in UAE On May 11, 2009, Dynamic Design Solutions co-organized a seminar on "Smart Building Technology - Structural & Seismic Safety" that was held in Abu Dhabi, UAE. The goal of the seminar was to present current technologies for seismic response analysis and structural health monitoring of tall buildings. This seminar coincided with the start of a 3-years study that is meant to analyze the building structures throughout the Abu Dhabi emirate and make sure they would be able to cope with a serious tremor. Like other cities in the region, new development projects in Abu Dhabi include an increasing number of tall buildings that will have to be earthquake-resistant. Dynamic Design Solutions' CEO Eddy Dascotte presented a paper entitled "Evaluation of Structural Safety by Combining Computational Models and Test Data". The speech included a live demo of a random vibration test using a mockup of a 3D frame structure and a four-channel acceleration data acquisition system. Using operational modal analysis integrated with FEMtools Model Updating, it was demonstrated that a reduction of joint stiffness at the base of the frame structure could be identified by shifting resonance frequencies and differences in the mode shapes. For more information or a copy of the presentation, contact info@femtools.com.
March 2009 - Estimating Rigid Body Properties from FRF Measurements: A New FEMtools Add-On Tool Dynamic Design Solutions announces the upcoming release of FEMtools Rigid Body Properties Extractor, a new tool to obtain the mass (M), center of gravity (CoG) and mass moments of inertia (MoI) from the low-frequency portion of measured accelerances (FRFs). These properties are useful to serve as targets references in updating the finite element model of the tested structure, or to reduce components to lumped masses for model reduction in structural dynamics simulations or motion analysis. Obtaining the rigid body properties is done in 2 steps. First, the rigid body responses (called "mass lines") must be extracted from the FRFs. The mass line corresponds to the value of the flat part of the response located between the low-frequency suspension modes and the elastic modes. These values are obtained by using a least squares fit of a low order polynomial (e.g. quadratic approximation). Once the mass line values are known, then the rigid body mass properties are obtained in the second step by solving a set of algebraic equations. Experimental data are imported from a Universal File (UF) or other. The FRFs must satisfy some requirements with respect to the measurement configuration (acceleration/force obtained from a freely suspended structure), and the number and positioning of excitation and response locations. If these conditions can be satisfied, then the proposed method presents a low-cost and fast alternative to traditional pendulum techniques.
The FEMtools Rigid Body Properties Extractor comes as an add-on to any FEMtools configuration. It is an interactive tool that allows the user to display the FRFs, define a frequency band between the suspension modes and elastic modes, and analyze the mass line values. An inertia box visualizes the equivalent mass volume with animation of rigid body modes. The rigid body properties (M, CoG and MoI) are displayed in real-time using tabular format with several error estimates. They can be exported for use in other programs or be used as updating targets in FEMtools Model Updating. This new exciting add-on is now available for beta evaluation. For more information and to request an evaluation copy, contact info@femtools.com
February 2009 - Integration of Dynamics Simulation, Model Validation, Updating and Optimization at Faurecia The Exhaust System Division of Faurecia, a long-time FEMtools customer, and Dynamic Design Solutions recently presented an optimization approach for tailoring the dynamic response of a complete exhaust system using finite element modeling. Before the optimization procedure is started, the FE model is updated using modal test data to ensure the validity of the FE model and to identify damping characteristic. The subsequent optimization is performed to keep the force transmitted by the exhaust system through the isolators to the car body below the design specifications, optimizing the stiffness of the decoupling elements. The goal is to ensure a good NVH (Noise Vibration Harshness) performance of the exhaust system. To ensure a computationally efficient process, Dynamic Design Solutions implemented an optimization routine that consists of two iteration loops: an inner and an outer loop. The inner iteration loop performs the optimization using a fast modal domain modification technique to predict the change of the dynamic response of the structure. However, the modal domain prediction is only accurate within a limited parameter range. Therefore, the outer iteration loop re-evaluates the full finite element model once the parameter changes exceed the â??trust-regionâ?? bounds of the modal domain prediction. The solution of the full re-evaluation is then used as an improved base for the modal domain prediction in the inner iteration loop. This project involved the use of FEMtools Model Updating and the new nonlinear optimizer of FEMtools Optimization. The custom optimization routine was developed with FEMtools Script. For more information, see the following paper or contact info@femtools.com T. Lauwagie, J. Strobbe, E. Dascotte, J. Clavier, M. Monteagudo, Optimization of the Dynamic Response of a Complete Exhaust System, presented at the 27th International Modal Analysis Conference (IMAC), February 2009, Orlando, Florida, USA. (Download (PDF, 1.0 MB)
February 2009 - Automotive Companies Standardize on FEMtools for FE Model Validation and Updating Several well-known automotive companies have joined the ranks of FEMtools users in the past year. They include major car makers as well as component suppliers. Renault (Paris, France) has deployed several licenses of FEMtools Model Updating to be used by engineers at its Paris technical centers in Rueil-Malmaison and Guyancourt. The successful European car maker now standardizes on FEMtools for its test-FE analysis correlation and FE model updating projects that include engine and chassis development. This decision for company-wide deployment was taken after using pilot licenses at some departments for several years and after an intensive evaluation by the IT group. FEMtools will replace a legacy software that was in use at Renault for many years but did no longer satisfy current requirements. Other global car makers that actively use FEMtools are Ford Motor Corp. (USA) and Honda (Japan). Companies that develop and manufacture components and subsystems like engines, brakes, exhaust systems, suspensions, seats etc. also make active use of FEMtools for simulation, model validation, model updating and structural optimization. In most cases FEMtools is used by the NVH (Noise, Vibration, Harshness) groups. The following are some references of companies that use FEMtools for these purposes: BorgWarner Turbo Systems, Faurecia, Valeo, Tenneco, Magna Powertrain, Johnson Controls, MAN B&W Diesel, and AP Brakes.
January 2009 - Dynamic Design Solutions Celebrates 15th Year! Dynamic Design Solutions is proudly celebrating its 15 years in business as an independent and employee-owned CAE software development company. We thank all our customers, partners and friends that have contributed to realizing our vision of a company that initially focused exclusively on researching and developing practical and easy-to-use software for validation and updating of finite element models. This field has long been, and still is, a niche that sits between the fast growing ranks of analysts and the conservative world of experimentalists. It has been an interesting challenge to find the formula for solutions that satisfy a very wide array of needs. During the past period we have succeeded to evolve from a pioneering start-up company to become the technology leader with a prestigious and wide customer base of commercial and academic organizations worldwide. Today, with our technology matured and most barriers for wide deployment removed, Dynamic Design Solutions is ready to engage in new ventures that will embed model updating as the enabling technology in new applications, such as material identification and structural health monitoring. Recently we have also begun to expand into structural optimization. This is an exciting field that we found to be a perfect complement to model updating and that we are approaching with the same enthusiasm. Stay with us, to be continued...
December 2008 - FEMtools 3.3.1 Maintenance Release Available Dynamic Design Solutions announces the release of FEMtools 3.3.1. This minor maintenance release includes a few bug fixes and performance improvements as well as extensions to the FE interface programs. Customers with current support and maintenance can find more information on this release and how to download the installation packs in the FEMtools Support site. A login name and password is required to access the support pages. If you have a current Maintenance and Support contract and did not yet receive a login name and password, then register at http://www.femtools.com/support.htm or send a request to support@femtools.com
December 2008 - Prepare now for Attending our Technology Courses in 2009 Registrations are now accepted for our 2009 technology courses. The course on Model Validation and Updating Technology is organized for the 5th year in a row and will take place April 1-3, 2009. The course on Structural Optimization Technology that was presented first time in 2008, will be repeated in November 2009. A new course on using Structural Dynamics in Industry will be organized in September 2009 in collaboration with Dr. Nicolas Roy (Top Modal). Nicolas is a specialist in the field of structural dynamics and optimization with over 25 years of industrial experience in aerospace, automotive and other advanced technology fields - and author of numerous publications and lecturer at universities and training centers. Like usual, FEMtools will be used for hands-on exercises during approximately half of the time. All courses are now three-day courses and will take place in Leuven, Belgium. Additional courses may be organized at different locations in collaboration with FEMtools Solutions Partners. For latest information and registration form, see http://www.femtools.com/courses
September 2008 - DDS Demonstrates FEMtools and ARTeMIS Integration for Structural Health Evaluation at ISMA 2008 Conference At the ISMA 2008 conference in Leuven, Dynamic Design Solutions demonstrated an experimental setup integrating a 4-channel data acquisition system, ARTeMIS output-only modal analysis and FEMtools Optimization to identify a structural modification of a vibrating plate structure. Time series data (acceleration) was obtain from a 4-channel data acquisition system connected by USB to a notebook computer and directly imported in FEMtools. Using a FEMtools Script, data was transferred to ARTeMIS Extractor by ActiveX. ARTeMIS is a commercial software for Operational Modal Analysis that is used by civil engineers for ambient vibration analysis of large structures like bridges and buildings (www.svibs.com). ARTeMIS returned a set of resonance frequencies and mode shapes that were then displayed in FEMtools and correlated against analytical mode shapes. This setup was used to demonstrate localization of a 50 gram mass on a vibrating plate using correlation between the mode shapes of the plate without and with added mass and a custom updating script. The complete integration and automation, from data acquisition to modal correlation and model updating, is an efficient tool to support research in structural health evaluation systems (SHES) and damage identification.
For more information on this setup, contact support@femtools.com
September 2008 - New Paper on FEMtools Optimization Application The following paper was added to the downloads: T. Lauwagie, J. Strobbe, E. Dascotte, J. Clavier, M. Monteagudo, Optimization of the Dynamic Response of a Complete Exhaust System, presented at the International Seminar on Modal Analysis 2008 (ISMA), September 15-17, 2008, Leuven, Belgium. Download (PDF, 1.2 MB) This paper presents an optimization approach for tailoring the dynamic response of a complete exhaust system using finite element modeling and was presented at the ISMA 2008 conference in Leuven, Belgium. It shows the results from a collaborative research project between Faurecia Exhaust System Division (R&D Center) and Dynamic Design Solutions. Click here to go to the complete list of downloadable papers
June 2008 - FEMtools 3.3 Released with New Optimization module Dynamic Design Solutions announces that FEMtools 3.3 has been released on all supported operating systems. FEMtools 3.3 is a major revision of the FEMtools suite that adds new functionality and improves existing modules. The new release extends the application reach of FEMtools in the design optimization field. The highlights of FEMtools 3.3 are:
For more information, click here. Customers with current support and maintenance can find more information on this release and how to download the installation packs in the FEMtools Support site.
March 2008 - Hong Kong Highways Orders FEMtools for Postprocessing Stonecutters Bridge Monitoring Data Dynamic Design Solutions announces that the Government of the Hong Kong Special Administrative Region (HK-SAR) has ordered FEMtools Framework as the platform software to develop a custom monitoring system for the prestigious Hong Kong Stonecutters bridge. This is one of the longest cable-stayed bridges in the world, currently under construction (http://www.stonecuttersbridge.net). The custom monitoring system will be part of the bridge's Wind and Structural Health Monitoring System (WASHMS) that monitors the response of the bridge to wind loading, temperature loading, highway loading and seismic loading. Furthermore, several licenses of FEMtools Model Updating will be delivered to the onsite bridge control units for real-time correlation of the bridge mode shapes with reference modes obtained from a validated and updated finite element model. The bridge mode shapes will be obtained with ARTeMIS software (http://www.svibs.com) using output-only modal analysis. This order will be a major showcase for state-of-the-art structural health monitoring technology that uses operational modal testing and model updating-based damage identification applied on large scale civil engineering structures.
For the complete press release, click here.
March 2008 - Announcing FEMtools Optimization Dynamic Design Solutions announces FEMtools Optimization, the newest member of its FEMtools family of products. FEMtools Optimization is a toolbox for general purpose and structural design optimization. In combination with FEMtools Model Updating, it provides the unique possibility to perform design optimization on validated and updated finite element models. Using a powerful non-linear optimizer, FEMtools can be used for solving arbitrary single or multi-objective non-linear optimization problems with a very large number of variables. Combined with FEMtools internal sensitivity computation, any type of optimization problem can be defined by user-programmed cost functions and constraint functions. For structural optimization using finite element analysis, function re-analysis can make use of FEMtools' internal solver capabilities or use drivers to pilot external programs like Nastran, Ansys or Abaqus. Ready-to-use commands are provided to solve the following common structural optimization problems:
The FEMtools open architecture, combined with the FEMtools Scripting language, provides virtually unlimited flexibility in the problem definition and offers function re-evaluation using your preferred FE-solver on Windows, Linux and Unix OS. FEMtools Optimization will first be released in Q2/2008 as a separate FEMtools 3.3 product configuration, or in combination with FEMtools Model Updating. Tools for design of experiments, response surface modeling, composite materials optimization and probabilistic design improvement will be added in subsequent releases. For preliminary product information, see FEMtools Optimization.
February 2008 - Theme of IMAC 2009 Conference Will Be "Model Verification and Validation" The Society for Experimental Mechanics, Inc. has announced the availability of the CALL FOR PAPERS for IMAC XXVII. You can download the Call for Papers at: http://sem.org/PDF/XXVII_CFP_web.pdf. The Theme for IMAC-XXVII is "Model Verification & Validation" so DDS invites all FEMtools users and partners to take this opportunity to submit a paper showcasing their work. IMAC XXVII is scheduled to be held February 9-12, 2009 at the Rosen Shingle Creek Resort and Golf Club in Orlando, Florida. Please submit your abstracts early. If a sufficient number of FEMtools-related papers are submitted, it may be possible to group these papers in a special session on model updating. Please inform DDS (info@femtools.com) if you have submitted an abstract and would like to present your paper in a special session on model updating.
December 2007 - New FEMtools Solutions Partner for Southern Africa Dynamic Design Solutions welcome ESTEQ Engineering as our newest FEMtools Solutions Partner serving our customers in Southern Africa. ESTEQ Engineering (Pty) Ltd is the leading supplier of simulation & testing technology solutions in Southern Africa. Their primary focus is to empower clients to become leaders in their respective industries through providing technology which can solve the most demanding engineering & scientific problems, in the shortest possible times. ESTEQ selects the leading technology suppliers from around the world and backs this technology with a team of the best people to provide the highest level of service to their clients. This service starts with helping companies' asses the business benefit they will get from implementing solutions which are tailored to client's requirements, through to implementation, technology transfer, training, support and consulting. This involves a long term relationship of mutual trust and growth which can only be achieved in a partnership. More information on ESTEQ Engineering - Simulation Driven Design and Testing - can be found at October 2007 - Successful FEMtools Presentations in China Following the assignment of FEMtools distributors in China earlier this year, DDS presented two product presentation seminars in Shanghai and Beijing during the month of October 2007. The seminar in Shanghai was hosted by the Noise and Vibration Institute of Jiao Tong Shanghai University and was co-organized by DMS-Co. Ltd. (www.dms-test.com), FEMtools distributor for South China. The seminar in Beijing was organized and hosted by Eastern Max Technology Corp. (www.emax-tech.cn), FEMtools distributor for North China. Both seminars were well attended and signaled the start of a marketing and sales campaign targeting Chinese universities and high tech companies. September 2007 - DDS Strengthens Development Team with Appointment of Dr. Tom Lauwagie Dynamic Design Solutions announces that it has strengthened its research and development team with the appointment of Dr. Tom Lauwagie as lead developer for design optimization related products. Tom obtained his PhD. in 2005 at the mechanical engineering department (PMA) of the Katholieke Universiteit Leuven (KUL) in the domain of material identification using model updating and optimization methods. May 2007 - Dynamic Design Solutions Adopts Reprise License Manager for the FEMtools Product Suite With the upcoming release of FEMtools 3.2, Dynamic Design Solutions has changed the licensing mechanism and now uses Reprise LM (RLM) for all license types. Reprise LM is a new and innovative product that has been developed by licensing industry veterans who have previously developed the well known Flex LM product. RLM provides solutions for all FEMtools licensing needs, including node-locked licensing using a machine-specific hostid or a FEMtools dongle, floating network licenses, roaming licenses, and failover licenses. As a consequence of adopting RLM in FEMtools, all customer upgrading to version 3.2 need a new license file. For the complete press release, click here. For more information on RLM, visit http://www.reprisesoftware.com
February 2007 - Dynamic Design Solutions CEO Eddy Dascotte to Present Keynote at ICED 2007 Conference Dynamic Design Solutions CEO Eddy Dascotte will present the opening keynote speech at the International Conference on Engineering Dynamics, to be held at Carvoeiro (Algarve, Portugal) from April 16-18, 2007. The subject of the presentation is "Model Updating for Structural Dynamics: Past, Present and Future Outlook". The FEMtools software will be on display at the exhibition that takes place during the conference. More information on the conference can be found at http://www.dem.ist.utl.pt/~iced2007/ The paper of the keynote can be obtained from the following location:
December 2006 - New FEMtools Solutions Partner in China Dynamic Design Solutions announces that FEMtools is now distributed in China by Eastern Max Technology Corp.(EMAX). Eastern Max Technology Corp. of Beijing, China, is a company whose primary objectives are in sales, marketing, support services, training and consultancy work for simulation software. EMAX was established in 2003 and over the years, has extended its customer base to the areas of aviation, aerospace, automobile, shipbuilding, railway vehicle, electronics, electric power and general machinery. Other companies represented by EMAX include leading companies like Samtech (Samcef), CEI (EnSight), NEI( NeiNastran) etc. The consulting part covers FEA/CFD modeling, linear & non-linear analysis, NVH analysis, durability analysis, thermal analysis, motion dynamic analysis and CFD analysis. EMAX and DDS are looking forward to help their customers in China on FEA applications such as dynamic model correlation analysis, structural modification analysis, FE-based design, design optimization and virtual prototyping etc.
November 2006 - AEDES Software Integrates FEMtools Framework FEA Solvers AEDES Software S.N.C., an Italian company specializing in finite element analysis software for civil engineers, has licensed FEMtools FEA solvers for its 2007 software releases. The sparse solvers components of FEMtools Framework are integrated in AEdES finite element analysis products for linear/non-linear static analysis, modal analysis and seismic analysis. Contact DDS (info@femtools.com) for more information on using FEMtools Framework as a CAE development platform or for licensing components like graphics viewers, solvers, FEA interfaces, scripting language, or mesh generators.
May 2006 - New FEMtools Solutions Partner in India Dynamic Design Solutions announces that FEMtools is now distributed in India by Foretek Marketing Private Ltd. Foretek Marketing Private Ltd. of Bangalore, India, is a company whose primary objectives are in sales, marketing, support services and consultancy work for testing equipment and simulation software (vibration, acoustics, climatic and dynamic). Foretek was established in 1979 and over the years, has undertaken various studies in the field of Noise, Vibration and Harshness (NVH). Many of the equipment that they have supplied are being used in prestigious projects of the country's aerospace, defense, railroad and automotive sectors. With the advent of newer technologies, the role of reliability testing and qualification testing of prototypes has become even more challenging. In keeping with the ever-increasing demands of the industry, it is their goal to keep abreast of the latest innovations so that they can be disseminated to customers in India. For this purpose, Foretek has a team of mechanical, electrical, electronic and software engineers based in their head office in Bangalore. Foretek has fully equipped laboratory facilities to carry out in-situ measurements, field measurements, component and full scale testing, covering the areas of:
Other companies represented by Foretek include leading companies like m+p, VXIT, Dewetron, Prodera, ESI-Group, Casella CEL, DJB, etc. Foretek and DDS are looking forward to help their customers in India on post modal applications such as correlation and structural modification analysis. They anticipate that in the near future this can be extended to CAE applications such as FE-based design, design validation, design optimization and virtual prototyping.
May 2006 - New FEMtools Solutions Partner in South Korea Dynamic Design Solutions announces that FEMtools is now distributed in South Korea by CYLOS Co. Ltd. CYLOS Co. Ltd is a sales & engineering company based in Suwon (near Seoul) offering product representation and distribution services, training and consulting related to NVH and structural dynamics in automotive, electronics, defense, environmental and heavy industries. The consulting part covers Test-CAE correlation, vibration testing, modal testing including SDM, vehicle testing, acoustics source localization etc. CYLOS also develops customized programs for automation of testing using various equipment. CYLOS can provide consulting related to simulation like linear and non-linear analysis, thermal analysis, fluid flow and motion dynamic analysis. CYCYLOS Co. Ltd. was founded in 2005 by Dr. S.H. Park who worked as CAE team manager of I-DEAS (SDRC) for three years before moving to Bruel and Kjaer Korea. There he worked for 7 years in various technical positions (technical team management, technical support, training, etc.). He also participated in consulting projects for the electronics, defense and automotive industries.
April 2006 - New FEMtools Solutions Partner in Spain Dynamic Design Solutions announces that FEMtools is now distributed in Spain by PROTOS ECI. PROTOS ECI (PROTOS Euro-Consultores de Ingenieria S. L. ) is an engineering company based in Madrid offering high quality consulting, product representation and distribution services to clients in the aerospace, aeronautics, automotive, defense and services industries. PROTOS ECI was founded by Dr. Kimon Alexiou in 2000. Kimon worked before as a Senior Engineering Consultant with the Structural Dynamics Research Corporation (SDRC) both in Hitchin, England and San Diego, USA for four years before moving to Spain. There he worked for the Space Division of CASA for 10 years in the Dynamics Laboratory where he led all modal testing, participated in various vibration test campaigns and the corresponding FEM analysis and correlation studies for the development and qualification of many satellite and Ariane-5 launcher sub-systems. The consulting services of PROTOS ECI cover the complete product cycle from design, simulation, analysis, test, analysis/test correlation, test qualification (vibrations, acoustics and environmental) and troubleshooting campaigns to client support and guidance for new technology and capacity acquisition. The portfolio of companies represented by PROTOS ECI includes leading manufacturers of vibration and acoustic hardware, software and services, like for e.g. m+p, MB Dynamics, 01dB-METRAVIB, ETS/SERVOTEST, DANTEC ETTEMEYER, etc. Products represented and distributed by PROTOS ECI are also used by them in their daily consulting activities and therefore PROTOS ECI are well positioned in offering effective solutions to clients and supporting them adequately both at the pre and post sale stages. Kimon Alexiou and other staff of PROTOS ECI will be pleased to respond to both specific inquiries and comments over the CAE Software and Services of DDS and general questions regarding the design, analysis, test (definition, preparation, performance), test/analysis correlation, model updating and product qualification processes. PROTOS ECI and DDS are looking forward to establishing a local and effective presence in Spain for working with and helping their clients to make the most of their FE models, turn them in Virtual Prototypes, enabling thus rapid design optimization and troubleshooting working practices.
February 2006 - FEMtools Manuals Available in Japanese Language Software Express, Inc., FEMtools Solutions Partner in Japan, announces the availability of FEMtools manuals in Japanese language. The translation of the entire FEMtools 3.0 documentation took several months during 2005 and was done by personnel of Software Express. Currently the Japanese manuals are updated for FEMtools 3.1 and will be available shortly.
December 2005 - Dynamic Design Solutions Joins ABAQUS Inc. Partner Program For the past several years, Dynamic Design Solutions has developed a direct interface between FEMtools and the ABAQUS advanced finite element analysis software with the support of different ABAQUS distributors and customers. Dynamic Design Solutions has now formally joined the new ABAQUS Inc. Partner Program to further strengthen and extend the integration between FEMtools and ABAQUS. The ABAQUS translator is an optional component of FEMtools Framework. It imports an ABAQUS input file and converts a complete finite element model and associated properties into the FEMtools database table structure. Other functions of the translator are to import element mass and stiffness matrices, and shapes resulting from static, modal or forced response analysis. The ABAQUS finite element model and analysis results data can be used by all FEMtools application modules for advanced structural dynamics simulation, pretest planning, sensitivity analysis, model updating, and design optimization. An updated FE model, or an optimized design, can be exported and converted by the ABAQUS translator into a ready-to-use input deck for ABAQUS. This close integration between FEMtools and ABAQUS allows to automate processes that require numerous restarts of the ABAQUS solver like, for example, model updating, design of experiments, and probabilistic analysis. For more information on the benefits of the ABAQUS Partner Program for FEMtools and ABAQUS users, please contact support@femtools.com
November 2005 - Material Identification using FEMtools and New Documents Available for Download The finite element model updating method that is implemented in FEMtools can be used for identifying the elastic properties of isotropic, orthotropic and anisotropic materials. If the material properties or beam section properties are selected as global updating parameters, and the modes of vibration of a test specimen (obtained by measurement) are used as reference responses, then the updating procedure will iteratively adjust starting values until predicted dynamic behavior corresponds with observed one. This approach is a non-destructive material testing method that is especially useful for composites and laminated materials. The method easily adapts to be used in temperature-controlled environments to obtain properties as function of temperature (or other controlled conditions). Applications of this methodology can be found in the following recent theses: Tom Lauwagie, Vibration-Based Methods for the Identification of the Elastic Properties of Layered Materials, Doctoral thesis, Catholic University of Leuven, October 2005. Download (PDF, 8.0 MB) Erik Euler, Identification of the Material Properties of Slender Composite Structures, , MSc Thesis, University of Brussels, 2004. Download (PDF, 2.7 MB) Click here to go to the complete list of downloadable documents.
March 2005 - Simulating Dynamic Response of Civil Engineering Structures Model updating of civil engineering FE models is a growing field. This is a result of the growing popularity of output-only modal test technology which provides usable reference data for model updating. There is also the growing need for structural health monitoring solutions including damage detection, damage identification and residual lifetime estimation. FEMtools can play an important role in the integrated systems that will be required to make this happen. To illustrate the potential, a number of new case studies were added to the Solutions section of the FEMtools website:
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Artist impression of the Hong Kong Stonecutters bridge.