Does Radioss consider buckling failure of solid elements during impact event?

Autumn

I have developed a model in HyperMesh for Radioss which involves the impact between a truss-like structure (modeled using 3D elements after importing CAD geometry) and a rigid body impactor at a given velocity, but am looking for a bit more information regarding the theory involved in simulating this scenario.

Based on the Radioss Theory Manual, I am led to believe that the solver does indeed take buckling failure of the struts of the structure into account, even though it is not necessarily a direct "buckling problem." However, I am looking for some confirmation of this or some additional material so that I could read to better understand the theory utilized since it is important that the buckling failure of the struts is considered during the impact event in my model.

Please let me know if you need any further information about the model or any clarification.

Thank you in advance for any guidance you are able to provide.

Simon Križnik

In the energy-absorbing parts, it is recommended to use at least 6 elements per wavelength, preferably 10 to 12. Fewer elements may not capture buckling correctly.

Rogerio Nakano_21179

HI

I have no additional theory material,

But having enough DOF you will be able to capture progressive buckling.

As the buckle is the effect on the structure as the compressive stress travel the structure and the stress waves (incident and reflected from the impact point) superimpose. 

Regards

Simon Križnik

In the energy-absorbing parts, it is recommended to use at least 6 elements per wavelength, preferably 10 to 12. Fewer elements may not capture buckling correctly.

Autumn

Thank you both for this additional information!