Release 2025 R1 includes new features and enhancements that result in product behaviors that differ from previous releases. These behavior changes are presented below
Energy Contribution. For the Energy Contribution result type, if you specify a single value in the Mode property, the graph displays as a bar chart for each associated body. Previously, the graph displayed as a single-column mosaic.
Mode Contribution. Now, when you evaluate a Mode Contribution result, using either a Load Step Number or an RPM Selection, the application automatically evaluates the result for all load steps or RPM values. When you change the load step value or RPM of the corresponding properties, the display of the result data changes per your selection. Previously you had to reevaluate the result when you changed the value of these properties.
Fracture Object. For the sole property of the Fracture object, Re-mesh Hex-dominant to Tetrahedral, the On option has been renamed Entire Part.
Fracture Controls. Note the following changes in behavior for the Fracture Controls analysis settings:
When the Large Deformation property is set to On and you 1) then insert a Fracture object, or 2) the Fracture property of the Fracture Controls category of the Analysis Settings is set to On (default), the application now automatically sets the SIFS or C*-Integral properties of the Fracture Controls to No.
The C*-Integral property (fracture parameter) computation is only supported when a creep material is used and the Creep Effects property of the Creep Controls is set to On. This requirement was not present in the previous release.
RPM Selection for Loading Conditions. For a multiple step Harmonic Response analysis, when you set the Multiple Step Type property of the Analysis Settings > Step Controls to RPM, the RPM Selection property now provides a drop-down list of available selections. Previously, you had to enter the desired load step value to specify the frequency.
Dummy mass in Motion. The mass and mass moment of inertia of interface nodes and dummy bodies in flexible bodies have been reduced. This reduction minimizes their effect on the solution and improves accuracy for Eigenvalue analysis. In some scenarios, results in 2025 R1 will therefore differ from those obtained using 2024 R2 and previous versions.
Iterative Solver Type. The ICCG solver is now limited to the Magnetostatic analysis only and this support may be removed entirely in a future release. See the Incomplete Cholesky Conjugate Gradient (ICCG) Solver section in the Mechanical APDL Feature Archive for additional information.
Imported Condensed Part. Now, when you are working with an Imported Condensed Part, if the application reduced one or more master nodes during generation pass, those master nodes and their elements are not available on the mesh during the Use Pass. All the remaining master nodes will be available for scoping and Named Selection creation on the mesh.
Bushing Joint. Now, when you set the Formulation property to Bushing:
The default setting for the Element Coordinate System property has changed from Reference Coordinate System to Global Coordinate System.
Only a Cartesian coordinate system is supported for the Element Coordinate System property.
The application no longer supports relative rotation between the Reference and Mobile coordinate systems.
The Reference and Mobile coordinate systems must be aligned with Global Coordinate System when the Element Coordinate System is not aligned with Global Coordinate System.
Checking Mesh Element Quality. The application has been refactored to include a new error limit when checking the quality of the mesh. This better ensures that the mesh passes the automatic element quality check. Previously, the error limit may have allowed some elements to incorrectly pass the quality check and as a result produce solution errors. You may still encounter this issue when resuming simulations (*.mechdb, *.dsdb, *.mechdat, etc.) from previous releases. Simply clearing and regenerating the mesh does not correct the issue. You need to improve the mesh’s quality using a mesh control to properly mesh and solve your analysis.
Imported Data Details. For imported loads, materials, and trace data, the Details pane for the associated objects has changed. The Legend Controls category has been renamed Information and now only includes the Minimum Source and Maximum Source properties that display the imported minimum and maximum data values associated with the object. You can make legend value changes using the legend displayed in the Geometry window.
Video Export using an Ansys Academic License. If you are using an academic license for Ansys Mechanical, the application no longer supports the ability to export MP4 video files.
Group Similar Objects. When grouping custom objects, objects are grouped by the object caption defined in the extension definition file. The resulting folder is also named after this caption.
Rename Based On Definition: When you automatically rename a custom object based on its type and scoping, the new object name will include the caption defined in the extension definition file.