LS-DYNA Interface

New Features

CONSTRAINED_INTERPOLATION_SPOTWELD
CONSTRAINED_INTERPOLATION_SPOTWELD is now available as a point connector type, which supports absorption, imprint, and realization.
Figure 1.


New Generic Impact Workflow
The new Generic Impact tool has been added, which you can use to define impact points on any type of structural parts, automatically position any type of impactors, and automatically export ready-to-run solver decks. For more details, see the Safety Tools release notes.
Example: Figure 2 shows multiple impact simulations on a door-trim using a spherical impactor.
Figure 2.


Enhancements

Contact Penetrations Check Tool
Enhancements have been made in penetration calculation accuracy for SOFT=2 (segment based) contacts and depenetration process performances. The graphs in Figure 3, Figure 4, and Figure 5 show the drastic reduction of remaining penetrations after the depenetration process for contact SOFT=2 for different large industrial models within HyperMesh 2026.0 compared to HyperMesh 2025.1.
Figure 3.


Figure 4.


Figure 5.


ALE Keywords Mapping
LS-DYNA ALE keywords are now all mapped into a single entity, and no more than eight different entities, for cleaner model organization and a simplified future of ALE keywords support.
Figure 6. HyperMesh 2025.1
Figure 7. HyperMesh 2026.0
Enhanced Material Anisotropy Definition for All Anisotropic Materials
Node selection is no longer required to define (X1,X2,X3), (A1,A2,A3), (D1,D2,D3), or (V1,V2,V3) anisotropy axis. It is now directly driven by location selection or direction selection. You can also input each attribute value manually in the Entity Editor.
Figure 8. HyperMesh 2025.1
Figure 9. HyperMesh 2026.0
New Keywords Supported
Support has been added for the new AIRBAG_CPG and DEFINE_CPG_GAS_PROPERTIES keywords.
Figure 10.


Enhanced Keywords
The new RESTRT and METHOD attribute values have been added in the FREQUENCY_DOMAIN _ACOUSTIC_BEM keyword.
The new SUBCASE option has been added in the FREQUENCY_DOMAIN_FRF keyword.
The new TITLE option has been added in the CONSTRAINED_SPR2 and CONSTRAINED_INTERPOLATION_SPOTWELD keywords.
Seatbelt Tool
Full-meshed slipring creation has been enhanced using an embedded simulation for robust and high quality results.
Figure 11.


Figure 12.


Resolved Issues

  • In SECTION_BEAM, when the QR attribute is blank or equal to 0.0, the value is now maintained on export and not automatically switched to 2.
  • When creating CONSTRAINED_INTERPOLATION, the default value of independent DOF is now set to 1.
  • In specific cases, the segmentation error when reading INITIAL_STRESS_BEAM has been fixed.