Lagrange Multipliers are introduced in loose incompressible constraints, and the nonlinear hybrid FEM is applied to analyses and calculations for stress, strain and strain energy density of viscoeiastic rubber material.

• 本文引入拉格朗日乘子对不可压缩性的约束进行放松,并采用非线性混合有限元法,对悬挂机构所用橡胶黏弹性材料的应力、应变及应变能密度进行分析计算。