Based on the rigid plasticconstitutiveequation of lead, the damping force model of lead extrusion damper was deduced from the even plastic deformation energy method.
本文根据铅的刚塑性本构关系，利用均匀塑性变形能法，推导了铅挤压阻尼器的阻尼力滞回模型。
2
Both the trend and the simulation data agree well with the experimental results, which affirms that the established plasticconstitutiveequation of milled powders is reasonable.
该趋势和模拟数值均与挤压实验结果基本一致，验证了所推导的球磨粉体本构方程的合理性。
3
Introducing the plastic strain the differential constitutiveequation for viscoelastic and plastic materials is deduced from multi-integral constitutiveequation for nonlinear viscoelastic materials.