【摘要】 爆炸、高速冲击等强动载荷作用下金属材料塑性流动的本构模型研究是冲击动力学领域备受关注的课题。近几十年来的研究成果极大地推动了冲击波物理、冲击动力学、材料科学等领域的发展.本文对金属材料塑性变形动力学数值计算中重要的、得到普遍应用的本构模型进行了回顾和评述,进一步明确其适用范围、优点和不足,为冲击载荷下材料响应的数值模拟对本构模型的选取提供参考.其中最新的、适用范围最广的PTW本构模型应给以特别地关注,其研究方法及应用前景都值得我们借鉴和期待.更多还原

【Abstract】 The constitutive models for plastic flow of metal materials under dynamic loading,such as explosive or impact loading,is very important in the impact dynamics,and its studies in recent decades have greatly promoted the development of shock physics,impact dynamics and material sciences,among others.In this paper,some important constitutive models for numerical calculations of dynamic plastic deformation of metal materials are reviewed.Their application range,advantage and disadvantage are discussed in details.A new constitutive model,PTW model is specially addressed.更多还原