运用材料的粘塑性本构方程建立了新的切削动力学模型及其传递函数，并给出了材料粘性系数表达式。
A new cutting dynamic model and its transfer function as well as the formula of the viscous coefficient are established in the overstress constitutive equation.
本文从非线性粘弹性物质的多重积分型本构方程出发，引入塑性应变，推导了粘弹塑性物质的微分型本构方程。
Introducing the plastic strain the differential constitutive equation for viscoelastic and plastic materials is deduced from multi-integral constitutive equation for nonlinear viscoelastic materials.
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