u/Flipphone17

I’m working on a crash simulation in ANSYS Explicit Dynamics for an aluminum honeycomb impact attenuator and would appreciate some guidance on the modeling approach.

The real part is a honeycomb structure, but modeling every individual cell would be very time-consuming. My current idea is to simplify the geometry as a solid block with equivalent honeycomb material properties instead of modeling the exact cellular structure.

Here is the information available for the real component:

• Material: Aluminum 5052 honeycomb
• Crush strength: 375 psi ±10%
• Pre-crushed core

My main question is about the material model available in ANSYS Granta:

• If I use the aluminum honeycomb material from Granta, does it already include the nonlinear crush / stress-strain behavior needed for Explicit Dynamics?
• Or does it only provide basic elastic properties, meaning I would still need to define the nonlinear curve manually?