爆炸冲击波对3种建筑玻璃的作用过程  

Action of explosion shock wave on three kinds of architectural glass

作　　者：江祺[1] 刘彤[1,2] 王汝恒[1] 潘婷[3] 

机构地区：[1]西南科技大学土木工程与建筑学院,四川绵阳621010 [2]中国工程物理研究院培圳中心,四川绵阳621999 [3]内江师范学院工程技术学院,四川内江641000

出　　处：《爆炸与冲击》2014年第2期229-234,共6页Explosion and Shock Waves

基　　金：国家自然科学基金项目(10972187)~~

摘　　要：借助ANSYS/LS-DYNA程序,采用ALE方法描述炸药和空气场,采用Lagrange方法描述玻璃,玻璃除考虑拉应力失效外,还增加了切应变失效判据,并给出了针对不同玻璃的建模方法和计算参数。利用建立的模型对爆炸冲击波对钢化夹胶玻璃、普通夹胶玻璃和浮法玻璃3种常用建筑玻璃的作用过程进行了数值模拟。计算结果可较好地反映实验中玻璃出现的冲切破坏现象,发生破坏时的冲击波超压也与实验结果吻合。研究表明,钢化玻璃比普通玻璃具有更强的抗爆性能,夹层玻璃中的PVB能有效地阻止玻璃的飞溅。Based on ANSYS/LS-DYNA, the ALE method was used to describe the explosive and the air flow field, and the Lagrange method was used to describe the glasses. And the tensile stress failure of the glasses was considered as well as the shear-strain failure criterion. The corresponding calculation models and parameters were given for three kinds of architectural glass, respectively. Moreover, the numerical simulations were carried out to analyze the action processes of the explosion shock waves on the toughened PVB-laminated glass, the common PVB-laminated glass and the float glass, respectively. And the anti-explosion experiments were performed on these three glasses to compare with the numerical simulations. The comparisons show that the numerical results can reflect the punching failure phenomena of the glasses in the experiments. When the glasses occur to failure, their shock wave overpressures by numerical simulation are in agreement with the experimental results. Furthermore, the investigated results display that the toughened PVB-laminated glass has a higher explosion resistance than the common PVB-laminated glass and the PVB in the laminated glass can effectively prevent the glass from splashing.

关 键 词：爆炸力学 抗爆性能 冲击波超压 建筑玻璃 失效判据 

分 类 号：O383.2[理学—流体力学]