FEMtools Release Information


FEMtools 4.1 (June 2019):

FEMtools 4.1 is a major new version that brings improvements to the FEMtools Framework and pretest analysis tools. FE-test correlation, sensitivity analysis and model updating now support strain responses. The FE data interfaces and drivers are updated to support the current versions of the FE programs.

The highlights of this new release are summarized hereafter:


  • Support for the new Sentinel HL Pro Driverless dongle is added.
  • User's Guides updated to 1600+ pages.


  • Conversion from linear to quadratic elements added.
  • Automatic generation of surface elements from test model tracelines.
  • Improved expansion of test mode shapes.
  • Improved interactive Mode Shape Pairs Editor.
  • The FEMtools database now supports strain and stress tensors, computed internally or imported using data interfaces.
  • Tables now support display strain and stress tensors.
  • Code optimization for long combo-boxes resulting in factor 50 speed increase.
  • A new graphics capture tool is added for capturing and resizing a graphic window.
  • A new button to set the center of (dynamic) rotation.
  • A new Animation Control dialog box.
  • Curve trackers can now be moved using the keyboard arrow buttons.
  • For shape animation, the color-coding can be set to follow the deformation amplitude.
  • The number of contour intervals and custom legend colors can be specified.
  • Code optimization of graphics rendering leading to speedup factors of up to factor 10.
  • Graphics viewers now support display strain and stress tensors.
  • The formulation for QUAD8 elements is improved for more robustness and higher speed.
  • The FEMtools solvers now support ILP64 (8 bytes) integer indexing, enabling larger datasets.
  • Computation of static and modal stress and strain has been reworked and now includes support for 2D and 3D elements.
  • Support for selecting strain responses is improved with support for stress component and element face selection. Specifying a coordinate system can now use an Automatic mode.
  • There are 25 new FEMtools API functions to support script development.

Data Interfaces

  • Support of Abaqus 2019
  • Support of Ansys 19.4
  • Support of MSC.Nastran 2019
  • Added support for static displacement and strain analysis in the Abaqus, Ansys and Nastran interfaces and drivers.
  • Like the Nastran interface, the Abaqus and Ansys interfaces now also support import of mode shapes based on mode number and on frequency ranges.
  • Support for SAP2000 v20


  • Improvements to Modal-based Assembly (MBA)
  • Automatic traceline generation has been reworked to support larger point clouds like produced by full field testing.
  • It is now possible to do manual sensor selection on a FE model without the need to compute or import the shapes.
  • It is now possible to import a test model and use it as a pretest model that can be edited (sensors added, removed, moved) and used in the Rotate Sensor panel.
  • New examples for static displacement and strain-based correlation analysis and model updating are added.
  • Support for strain responses is added.
  • Several utility scripts are added to postprocess sensitivity analysis results like deleting responses and parameters based on sensitivity level, or create sets of elements based on sensitivity.
  • Static displacement-based model updating is now supported with FEMtools, Ansys, Abaqus and Nastran solvers.
  • Static strain-based model updating with FEMtools, Ansys, Abaqus and Nastran solvers.


FEMtools 4.0.1 Maintenance Release (December 2017):

FEMtools 4.0.1 is a maintenance release that provides bug corrections, several enhancements and following additions:

  • New interface with ABAQUS SIM files
  • Support for MSC.Nastran 2018
  • Support for MSC.Nastran free and mixed interface superelements
  • Support for SAP2000 v19
  • New command SORT
  • Several new examples
  • Several new documentation chapters


FEMtools 4 (June 2017):

FEMtools 4 is a major new version that brings new features and improvements in all modules, supports recent versions of FE programs and consolidates the maintenance releases of the past years. 

The highlights of this new release are summarized hereafter:

  • Released for Windows 64-bit platforms (7, 8, 10) and Linux 64-bit RHEL6+ only
  • Support of a new Safenet HL dongle that can also be used on Linux computers
  • New Check for Updates automatic updating of the program
  • New license configurator to configure nodelocked, network and roaming licenses
  • New vector-based icons (SVG) with modern flat design
  • Automatic scaled icons on high resolution monitors (4K)
  • New reporting commands for MS Office (Excel, PowerPoint, Word)
  • New interactive test model editor
  • Improved graphical picking (visible items only, pick by face, pick by attached)
  • New Digital Signal Processing (DSP) commands
  • Support of Abaqus 2017
  • Support of MSC.Nastran 2017
  • Support of Ansys 18+
  • New interface with the LS-DYNA finite element package
  • New out-of-core solver options to overcome memory limitations
  • New command to add rigid body modes and rotation DOF to the database (MBA)
  • Support for rigid connections in Modal-Based Assembly (MBA)
  • New tool for computing Mass Loading Sensitivity (MLS)
  • Improved Mode Participation Analysis (MPA) tool
  • New tool for computing Mode Participation Maps (MPM)
  • New tools for excitation and support location selection
  • New commands for importing and exporting sensor selections
  • New interactive mode shape pair viewer
  • Improved computation of  mode participation factors
  • Improved computation of modal orthogonality (EVO)
  • Support for new parameter types (spring stiffness scaling factors)
  • New commands for RSM regression and verification
  • Topometry optimization for minimum FRF level design


FEMtools 3.8.2 Maintenance Release (October 2015):

FEMtools 3.8.2 is a maintenance release that provides bug corrections and various enhancements to the framework, data interface programs, user interface, analysis modules, commands and API functions.


FEMtools 3.8.1 Maintenance Release (May 2015):

FEMtools 3.8.1 is a maintenance release that provides bug corrections and various enhancements to the framework, data interface programs, user interface, analysis modules, commands and API functions.


FEMtools 3.8.0 (December 2014):

FEMtools 3.8 is a major revision of the FEMtools software suite with improvements and extensions in all modules of the program. The highlights of this new release are summarized hereafter:

  • Mesh generation commands can now be used to directly generate test models. Previously an FE model was generated that was subsequently converted in a test model.
  • Generation of master DOFs for model reduction and superelements is extended to provide more options.
  • FRF Computation uses new dialog boxes to generate FRFs from analytical or test modes in a faster and more efficient way.
  • It is now possible to add a gravity load to static analyses. This is also supported for topology optimization.
  • Improvements are made to the Pretest Analysis tools for Nodal Kinetic Energy analysis, automated and manual sensor selection and a new tool for mass loading sensitivity analysis is added.
  • Mode shape pairing for axisymmetric structures and AutoMAC analysis are improved with new settings.
  • A new tool for Automated Mode Tracking (AMT) is added to compare mode shapes of a modified model with a set of reference modes and to identify mode switches. This feature can be used in design modification tools.
  • It is now possible to define generic parameters for sensitivity analysis and model updating. Generic parameters offer the flexibility to use any value that is accessible from an external database as parameter.
  • Parameter Relations:
    • It is now possible to define relations using parameter labels as an alternative to using parameter indices. This simplifies the definition and editing of parameter relations.
    • A new type of relations, group relations, has been introduced. Group relations are defined on labels: the relation will modify all the parameters with the specified labels in the same way.
  • It is now possible to use a generic solver for sensitivity analysis and model updating. A generic solver is an external solver that is piloted with a custom-developed script.
  • Model updating using generic parameters, responses and solvers is now available for completely customizable implementation of automated updating processes.
  • The Monte Carlo Simulation (MCS) tool for probabilistic analysis has been reworked and now offers new commands, settings, and dialog boxes. More specifically the following features are significantly improved: importing test data, sampling, statistical property estimation, sample evaluation and postprocessing.
  • An additional applet for local modal parameter extraction is added to the FEMtools Modal Parameter Extractor (MPE) add-on and the global extractor tool is extended with additional commands for modal extraction automation. The addition of an applet for local modal parameter extraction has been a regular user request since the release of the original MPE add-on. A local extraction tool is preferred to extract modal parameters from test data that are affected by mass loading.
  • Extended scripting functionality is offered through 26 new and 29 modified commands to be used in command scripts. FEMtools Script programmers will benefit from enhanced FEMtools API functions.
  • The FE data interfaces and solver drivers (Abaqus, Ansys and Nastran) are upgraded to support the latest version of the external solvers. The interfaces are extended in response to customer requests.
  • A new OAPI-based version of the SAP2000 interface and driver is introduced for enhanced correlation analysis and model updating of SAP model.