不同爆炸加载参数下含裂纹试件的动光弹数值分析  

Dynamic Phatoelastic Numerical Analysis of Specimens Contairing Cracks under Explosive Loading

作　　者：郭占起[1] 费志中 吴明棣 

机构地区：[1]北方交通大学工程力学研究所

出　　处：《北方交通大学学报》1994年第1期81-88,共8页Journal of Northern Jiaotong University

基　　金：中科院地质所工程地质力学开放研究实验室资助

摘　　要：采用动态光弹性的方法，对在不同爆炸加载参数下含裂纹试件的动态响应进行了研究，对爆炸过程、应力波传播规律及其对裂纹的影响进行了分析讨论。给出了应力波通过裂纹尖端时，其应力强度因子连续变化的规律；给出了改变爆炸加载参数及边界反射波对裂纹尖端应力强度因子的影响。The dynamic phatoelastic experiments on eporey resin plate specimens containing cracks under explosive loading are carried out. The explosive process,propagation characteristics of stress wave and its effects on crack are disussed.The continuous variation of stress intensity factor at the tip of the crack was given quantitatively when the stress wave passed through the crack tip. The effects of stress intersity factor at the tip of the crack by explosive loading parameter and reflected stress wave are studied.

关 键 词：爆破载荷 动光弹 裂纹 数值分析 

分 类 号：O346.1[理学—固体力学]