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Accurate FEA of Engineering Plastics - Strain Rate Effect in Falling Dart Simulation

Case Study: Strain Rate Effect in Falling Dart Simulation

This presentation was given by Steven Hale at CAE Associates' Accurate FEA of Engineering Plastics Seminar, held on October 14, 2014 in Tarrytown, NY.

A model of a falling dart test was developed in ANSYS Workbench/LS-Dyna to demonstrate procedures for including strain-rate sensitivity in plastics and to show the importance of including this sensitivity when plastic parts are subjected to dynamic loads.

  • Yield and flow in plastics varies with strain rate.
  • Failure can also vary with strain rate.
  • LS-Dyna includes a number of material models that include strain-rate sensitivity.