硬化材料中的波传播与层裂效应研究

给出了简明有效的塑性本构关系及其在数值计算中的应用，并利用所建立的本构关系对高能炸药在钢板表面接触爆炸时钢板中应力波的传播及所产生的层裂现象进行了数值分析．对钢板材料采用理想塑性、各向同性硬化、随动硬化、联合的各向同性－随动硬化等模型进行了系统数值计算，从而得出了材料塑性硬化行为对波传播和层裂规律的影响，并进行了相应的分析．

STUDY ON WAVE PROPAGATION AND SPALLATION EFFECT IN HARDENING MATERIALS

A clear and simple plastic constitutive form and its application in numerical method are proposed. Based on this form, the numerical analysis of the propagation of stress waves and the allied scabbing phenomena in a steel plate under explosive attack is made. For the steel plate the isotropic hardening, kinematic hardening and the combined hardening models are used. The effects of the plastic hardening behaviors on wave propagation and spallation are carefully studied.