Implementation and its Application in Finite Element Analysis of Constitutive Model for ZWT Nonlinear Viscoelastic Material

Based upon LS-DYNA,user can be satisfied his requirs that empolder some materials constitutive relation's subprogram.Though calculated ordinary tensile loading linear elastic constitutive relation's subprogram,feasibility of material subprogram's development is obtained;Nonlinear viscoelastic's ZWT constitutive model which used in aircraft windshield and has a strain rate dependence is written,and ZWT is described point-device,especially,effect in stain rate.It is used to calculating the real windshield,agreement with the numerical calculation is very good.