摘要
利用MSC.Patran为前后处理平台建立冲击模型,MSC.Dytran为求解器对某引信电源贮液瓶体结构进行抗冲击特性及动力学响应研究,并对计算结果做了进一步分析。结果表明,瓶底凹槽边缘区域是载荷敏感区,塑性变形更容易在此发生;瓶底冲击应力峰值随冲击距离和加速度的增加而增大,但当凹槽厚度增加较大时,冲击距离的改变对应力峰值的变化趋势没有显著影响。
We use MSC Patran as preprocessing and postprocessing platforms to build the impact model for the liquid storage tank of a fuze and MSC Dytran as a solution-seeker to study the anti-impact characteristics and dynamic response of the liquid storage tank with different structures. Furthermore we analyze the calculation results. The analysis results show that the region at the edge of the flute at the bottom of the tank is the loadsensitive area where plastic deformation is liable to occur. The peak value of impact stress at the bottom of the tank increases with the increasing of the distance of impact and the acceleration. However, as the thickness of the flute increases greatly, changes in the distance of impact do not exert obvious influence on those in the peak value of stress.
出处
《机械科学与技术》
CSCD
北大核心
2007年第8期1090-1092,1096,共4页
Mechanical Science and Technology for Aerospace Engineering
关键词
贮液瓶
冲击特性
冲击应力
liquid storage tank
impact characteristic
cmpact stress
