OptiStruct Explicit: Crashbox simulation

Crashbox are an important component in Crashworthiness. They allow to dissipate efficiently kinetic energy coming from a crash situation. They are widely used in automotive industry. OptiStruct Explicit enables to perform such studies efficiently. 

The goal of this article is to showcase OptiStruct capabilities with a simple crashbox example. The following studies were performed:

• Different integration schemes have been evaluated.
• Comparisons have been conducted between Radioss & OS explicit. Results are consistent between the two softwares.
• A sensitivity study wrt number of cores has been conducted. Results are not sensitive to the number of cpus used, which is good.

This article includes:

• 1 ready-to use OptiStruct model
  • Altair OptiStruct version is V2024 (and compatible with later versions)
  • The Unit System is in (kg, mm, ms, GPa)
• 1 ready-to-use Radioss model in Dyna format
• 1 session file to output results efficiently
• A report with a detailed description of the model and the results of the study.