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Material Models for Thermoplastics in LS-DYNA® from Deformation to Failure

In the last years the demands of the automotive industry have led to a strong interest for a more detailed description of the behavior of thermoplastic materials and thus for more complex material cards including damage and failure. Also, the importance of gaining material data quickly has risen. Currently material and failure modeling in crash simulations typically deal with simple von Mises visco-plasticity (*MAT_024) and equivalent strain failure criteria, which cannot describe the complex material behavior of plastics. Past developments have focused on the yield behavior under different load situations (tension, shear, compression), which are implemented in more complex material models like *MAT_SAMP-1.