# Introduction

A brief description of the example.

*MAT_PIECEWISE_LINEAR_PLASTICITY Piecewise Linear Plasticity Fragmenting Plate LS-DYNA Manual Section: *MAT_PIECEWISE_LINEAR_PLASTICITY Example: Piecewise Linear Plasticity Fragmenting Plate Filename: mat_piecewise_linear.plate-shatter.k Description: A plate of 1,200 Belytschko-Tsay shell elements strikes a wall at an angle of 45 degrees from the wall normal. The impact velocity is 20,775 in/sec. and the termination time is 0.00025 seconds. Model: The material description contains Young's Modulus, Poisson's ratio, yield stress, hardening modulus, ultimate plastic strain, and time step size for element deletion. Input: One material definition for a Belytschko-Tsay shell with viscous hour glass control (*CONTROL_HOURGLASS). Young's Modulus, Poisson's ratio, yield stress and the hardening modulus are 16 Msi, 0.35, 155,000 psi, and 192,000 psi respectively. (*MAT_LINEAR_PIECEWISE_PLASTICITY). The plastic strain at failure is 32% and the failure minimum time step size is 0.3 microseconds. Results: The plate deforms away from the stonewall and the plate fragments.