Introduction

*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.