聚能装药作用下夹层玻璃的破坏研究

摘要

为了研究夹层玻璃在聚能装药作用下的破坏效应，借助ANSYS LS-DYNA仿真模拟软件，采用Lagrange和ALE流固耦合方法对夹层玻璃进行了数值仿真研究。玻璃材料采用JH-2模型，并施加最大主应力失效准则。结果表明：不同冲击能量作用下夹层玻璃失效破坏和四周裂纹扩展存在着一定的规律，玻璃失效破坏的长度、速度、加速度等参数随着冲击能量增加呈现增长趋势；在裂纹扩展方面，冲击能量不同时玻璃的裂纹起裂时刻与内能减少时刻基本相同，裂纹产生条数和裂纹密度都随着冲击能量的增加而增大。%To explore the destruction effect of laminated glass under shaped charge, the fluid-structure interaction methods of Lagrange and ALE were introduced to numerical simulation on laminated glass, through ANSYS/LS-DYNA software. JH-2 model was adopted, and maximum principal stress failure criterion was exerted for the glass material. Results showed that a certain rule was existed between laminated glass failure destruction and crack growth under the action of different impact energy. That is, with the increase of impact energy, the length, velocity and acceleration of glass failure destruction presented a growth trend. Additionally, in terms of crack growth, the moment when the crack of glass initiated and its internal energy decreased was synchronous under various impact energy. And the article number and density were also increased with the increase of impact energy.