为掌握玻璃钢定向器在火箭弹和燃气流作用下的动态特性情况,采用瞬态有限元法对某玻璃钢定向器进行真实工况下热弹耦合性能的数值仿真与分析,获得了玻璃钢定向器热弹动态特性和火箭弹管内运动与作用情况。结果表明某玻璃钢定向器在开始阶段产生的响应应力和应变较大,定向器后端产生的响应应力和变形位移比前端大;燃气流热载荷对玻璃钢定向器的动态性能产生一定影响,其主要影响是在火箭弹出定向器以后,使定向器产生较大热变形。

In order to master the dynamic characteristic of glass-steel directional tube under the action of rocket projectile and high temperature burning gas jet flow. The numerical simulation and analysis of thermal elastic coupling performance under true work condition for a certain glass-steel directional tube with instantaneous state finite element method are done. So the dynamic characteristic of thermal elastic coupling of glass steel directional tube and the states of movement and interaction of rocket in directional tube are gained. The results indicate that the response stress and strain of glass-steel directional tube are bigger at the start stage of launch, and the response stress and deformation displacement of directional tube end is bigger than forepart, the thermal loads of burning gas jet flow bring some influences to the dynamic performances of glass steel directional tube, but the main influence is after rocket sliding out directional tube, which cause directional tube producing more thermal deformation.