Altair SimSolid 2025 Release Notes

• Results across datum planes
• Import and Export of superelements
• Temperature-dependent structural material properties
• Assign rigid bodies from a file
• Assign skin thickness from a file
• Rivets along coaxial holes
• SimSolid connect for Siemens NX
• Set part type as protruded

Results across datum planes

All results can be plotted and queried across manually defined datum planes. Datum planes can be defined from the Assembly workbench and results can be plotted and queried across them once the analysis is finished running.

Import and export of superelements

Superelements can be exported using a new workbench called Structural superelement export, where stiffness matrix and load matrix can be exported. The superelement exports to a DMIG file and requires importing interface points. Load matrix is exported only when the loads and boundary conditions are defined.

Import of stiffness, load and mass matrices via DMIG file is now supported. DMIG generated by dynamic condensation using CBN method can be imported. They can be used to perform both structural and dynamic analysis.

Temperature-dependent structural material properties

Temperature-dependent structural material properties can be defined and used in structural linear analysis. Temperature-dependent elastic modulus, Poisson’s ratio, density, and thermal expansion coefficient are supported. They can be defined manually or can be imported from a CSV file.

Assign rigid bodies from a file

Rigid bodies can now be set by importing a CSV file. The CSV file would contain the part name and the mass of the part that would be assigned on import.

Assign skin thickness from a file

Skin thickness can be assigned by importing a CSV file. The CSV file should contain the skin name and part thickness. Upon importing the thickness, the skins will inflate to sheets with specified thicknesses.

Rivets along coaxial holes

Virtual rivets can be created along coaxial holes. The coaxial holes are automatically recognized and populated. The holes can also be of different dimensions.

SimSolid Connect for Siemens NX

SimSolid Connect is now available for Siemens NX. With this extension, you can transfer the geometry between NX and a new/existing session of SimSolid seamlessly without using geometry files. The add-in is automatically populated in the drop-down menu once SimSolid is installed.

Set part type as protruded

During geometry import, SimSolid automatically recognizes protruded parts. This recognition ensures efficient geometry decomposition of such parts.

A new capability has been added to manually set the part type to protruded in cases where the geometry is not automatically recognized appropriately.

Reactions at remote displacement point

Reactions are output at remote point coordinates of remote displacement.

Legend and min/max for dynamic analysis

In dynamic analysis, the legend and the min/max of a response is adjusted based on the displayed parts.

Pick load for loads applied on spots and general connector

Pick load is supported for forces or remote loads applied to spots and general connectors. This is supported for both structural and dynamic analysis.

Structural-thermal load cases for fatigue analysis

Structural load cases linked to transient thermal analysis with multiple time steps can now be included in fatigue analysis.

Others

• Import of spot welds from CSV file now has an option to use part names as keywords.
• A new option to input geometry type is included in batch mode. This option chooses between skins, solids, and skins and solids.
• Modal participation factors ratio is now included for modal analysis.
• Distributed mass has additional info. such as total area, total mass and mass per area included.
• The mapping of imported thermal boundary conditions is improved. It includes fast read time and checking for the quality of imported data too and mapping valid and complete data only.
• Geometry error check includes issues with skins as well.
• Improved export of connection reaction forces to CSV when bushings are involved.
• Cable/rod reactions are available for all the steps of a geometric nonlinear analysis.
• Parasolid has been updated to version 36.1.212.
• Improved memory handling for large assemblies that can result in faster runtimes.

Updated CAD import formats

The list of supported CAD formats has been updated as:

File Format	Supported Versions
Pro Engineer	13 – Creo 11
NX/Unigraphics (.prt)	11.1 – CR2406
CATIA V5 (.CATPart, .CADProduct)	R8 to R34 (V5-6 R2024)

The following known issues will be addressed in a future release as we continuously improve performance of the software.

• Issues with linear guide joint under virtual connectors.

• In the Legend, Set output units to temporarily set output units has been removed. The output units can still be set from the Project Tree.
• Prestressed modes is not supported for orthotropic material, so this has been disabled.
• Find collisions is not supported for post study, so this has been disabled.

• Issues with mapping imported loads from one design study to another.
• Issues inflating skins across the design studies.
• Issues identifying faces of revolution on the geometry.
• Issues creating duplicate connections.
• Issues saving response history plots to CSV file.
• Issues exporting Neuber results to CSV with cylindrical coordinate system.
• Issues saving imported forces to CSV file.
• Issues with imported coordinate system.
• Missing thermal load from linked transient thermal analysis by copy of structural analysis.
• Issues with effective mass when modal analysis is run with frequency upper bound.
• Issues assigning orthotropic materials to parts in multi-level assembly structure.
• Issues accepting edits of boundary conditions.
• Issues retaining views from the bookmark.
• Issues with zoom in/out of cables and rods from cable/rod reaction forces.
• Issues with zoom in/out of imported bushing with up/down keyboard keys.
• Issue with missing results in the database due to lack of response mesh on the parts.
• Issues listing the same part multiple times in Show parts ranked by amplitude for fatigue analysis.
• Issues updating the response names in the legend for dynamic analysis.
• Issues editing/reviewing remote load.
• Issues related to bookmark of modal analysis.
• Issues with custom contact conditions.
• Issues with graphical update of rotational inertia direction.
• RMS results for reactions is available for cylindrical and/or local coordinate system.
• Issues with stresses listed in pick info for laminates under response spectrum analysis.
• Issues applying materials to adhesives.
• Issues updating labels when coordinate systems are switched with results plotted.
• Issues copying boundary conditions to spectrum analysis.
• Geometry import resolution is included for batch mode jobs.
• Issues with synchronized units for imported loads.
• Issues deleting liquid/gas body from the local study when removed from the global study.
• Issues with seam weld display when reviewing materials.
• Improved Neuber results evaluation.
• Issues with unit conversions for wind load yielded incorrect results.
• Resolved several crashes.