The Workbench application provides multiple systems that enable explicit solutions:
The Explicit Dynamics system is a Mechanical application-integrated provision of the Autodyn FE (Lagrange) and multiple-material Euler solvers plus Euler-Lagrange Coupling (providing FSI). The Autodyn solver is equivalent to the Explicit Dynamics Solver.
The LS-DYNA and LS-DYNA Restart systems are Mechanical application-integrated provisions of the LS-DYNA solver with extensive support through native Mechanical application objects or keyword management.
The enhancements for these systems for Release 2025 R1 are described below.
Explicit Dynamics
For the Explicit Dynamics system, there are no enhancements for Release 2025 R1. The Explicit Dynamic Analysis System is now in maintenance mode. Please make sure to check the release notes with every release or contact your Account Manager or local support. More information may be found in the Mechanical Beta Features document.
LS-DYNA
For LS-DYNA systems, note the following enhancements for Release 2025 R1:
Remote Point Electrical Behavior. Remote Point supports a new behavior named Isopotential which is useful in battery applications to allow potential coupling between faces and edges.
Battery Support. There are several objects that can be defined in an LS-DYNA system that provide support for modeling batteries, including Battery Cell, Battery Thermal Abuse, Isopotential Connection, and Circuits Short Resistance.
ALE Viscous. A new material model is available in Engineering Data that allows you to specify the viscosity of a given domain.
ALE Material Failure. Material failure is available in the LS-DYNA system for ALE and S-ALE simulations. This approach replaces the failed material with a dummy vacuum material by creating a dummy part.
Contact Check. It's now possible to use the Mechanical application Contact Tool to check the correctness of your LS-DYNA simulation's contact specifications. You can also evaluate various contact results to see if the behavior is as expected.
Delamination Support. The Mechanical application's Interface Delamination object is supported in the LS-DYNA system. You can trigger delamination of 2 layers of a composite model through a defined energy level.
Contact Debonding. The Mechanical application's Contact Debonding object is now supported by the LS-DYNA system, allowing you to break a contact when a certain energy level is achieved.
Alternate Method to Define Composites. The LS-DYNA system allows you to use the part composite approach instead of the element shell approach that was previously used. Composites can now be defined over a broad area.
Body Temperature Load Transfer. It is now possible to transfer body temperature loads from a Steady State Thermal or Transient Thermal calculation to an LS-DYNA system using dissimilar meshes.