椭圆封头圆柱形爆炸容器动力响应的数值模拟

采用显示非线性动力有限元软件LS-DYNA，在不同TNT当量下对椭圆封头圆柱形爆炸容器进行了数值模拟。模拟结果表明:对椭圆封头与圆筒组合而成的理想结构，爆心环面的应变在初始响应阶段就达到了最大值，并且其值大于筒体上其他点的最大应变；实际结构中法兰对爆炸容器的动力响应有很大的影响，当法兰的质量超过一定值之后，容器爆心环面会产生应变增长现象。在容器的设计工作中要加强容器的爆心环面并适当地选择法兰。

Numerical simulation on dynamic response of the cylindrical explosion containment vessel with an elliptical cover

The dynamic response of a cylindrical explosion containment vessel with the elliptical cover under four kinds blast loading was studied using explicit finite element code LS-DYNA.The results show that for the ideal structure that only include a cylinder and an elliptical cover,the strain of the points on the plane which across the center of the vessel has become the largest during the initial stage.When adding a certain mass flange on the vessel,the strain growth phenomenon has shown up on the above points....