【摘要】 在位错的运动和产生与塑性变形的一般关系及考虑到热激活与粘性阻尼效应的位错集体运动的统一理论基础上，通过对结构参量的演化规律的具体建议，提出了一种基于物理变量的热粘塑性本构模型。在此模型的基础上，讨论了金属材料动态力学行为的微观机理更多还原

【Abstract】 By combining the general equation relating the plastic strain rate to the dislocation motion,generation and the unified theory of collective dislocation motion including both thermal activation and viscous drag effects which were proposed previously by the authors,and through the proposing of appropriate evolution laws of dislocation structure parameters,a kind of thermal viscoplastic constitutive model based on physical variables is obtained.Based on this model,the mechanisms of dynamical mechanical behaviour of metals are discussed.更多还原