大位移运动导弹圆筒在冲击波作用下的动力学与毁伤研究  

Dynamics and Damage of Flexible Missile Cylinder in Large Overall Motion Acted by Shock Waves

作　　者：肖建强[1,2] 章定国[2] 陈爱军[2] 李向东[3] 

机构地区：[1]南京工程学院建筑工程学院,江苏南京211100 [2]南京理工大学理学院,江苏南京210094 [3]南京理工大学机械工程学院,江苏南京210094

出　　处：《南京理工大学学报》2010年第3期294-298,318,共6页Journal of Nanjing University of Science and Technology

基　　金：国家自然科学基金(10772085);江苏省自然科学基金(BK2007205);国防基础科研项目;江苏省"青蓝工程"

摘　　要：该文对作空间运动的柔性导弹圆筒在冲击波作用下的动力学和毁伤问题进行了研究。采用运动弹性动力学方法对系统进行了动力学建模,建立了冲击波作用下的柔性导弹圆筒的大位移动力学方程和柔性导弹圆筒作横向二维振动的动力学方程。采用假设模态法描述柔性变形,将偏微分形式的动力学方程转化为常微分方程。在动力学分析基础上,对圆筒的强度进行了分析,考虑了筒身存在孔洞而出现的应力集中现象。最后通过1个实例数值分析了冲击波作用下的柔性导弹圆筒的动力学响应和毁伤效应。The dynamics and damage of a flexible missile cylinder in large overall motion acted by shock waves are studied here.The method of kineto-elastiodynamics（KED） is used to perform the dynamic modeling for the system,and the dynamic equations of the large overall motion and two-dimensional transverse vibrations of the flexible missile cylinder are established.The approach of assumed modes is employed to describe the deformation of the flexible cylinder,and the partial differential dynamic equations are changed to the form of ordinary differential equations.Based on the dynamic analysis on the system,the cylinder strength is analysed with consideration of the stress concentration phenomenon induced by holes.An example is given to numerically analyze the dynamics and the damage effects of shock waves on the flexible missile cylinder.

关 键 词：柔性圆筒 运动弹性动力学 冲击波 毁伤 

分 类 号：O313.7[理学—一般力学与力学基础]