Oasys LS-DYNA Environment 8.1 VOLUME 3 ... - Oasys Software

Oasys LS-DYNA Environment: User Guide (Version 8.1)
LS-DYNA Manual Section: *MAT_PIECEWISE_LINEAR_PLASTICITY
Example of: Piecewise Linear Plasticity Fragmenting Plate
Example File Name: plate_shatter.key
Description:
A plate of 1,200 Belytschko-Tsay shell elements strikes a stonewall at an angle of 45 degrees from
the stonewall 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, load curve for
strain rate, hardening modulus, ultimate plastic strain, and time step size for element deletion.
Input:
The material definition for the Belytschko-Tsay shell uses a viscous hourglass control
(*CONTROL_HOURGLASS). The Young’s Modulus, Poisson’s ratio, yield stress and hardening
modulus are 16 Msi, 0.34, 15,500 psi, and 192,000 psi respectively. The plastic strain is 32% and
the minimum time step size is 0.3 mseconds.
Results:
The plate deforms away from the stonewall and the plate fragments.
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