摘要
研究导弹垂直弹射过程中制动锥的动力学行为.基于塑性铰理论,利用功能原理和能量守恒定律进行理论分析;采用非线性有限元软件ABAQUS进行仿真计算;采用准静态方式完成了压力机上的试验.用3种方法所得结果基本一致.有限元计算和试验结果给出了接触力和制动锥压缩量之间的经验公式,具体结果和结论可用于制动锥的工程设计和武器系统的发射动力学分析.
The dynamical behavior of the braking cylindrical shells during the vertical ejection of missiles has been studied. On the basis of plastic joint theory, theoretical analysis was carried out using work-energy principle and energy conservation theorem. Computations were completed using the nonlinear FEM software ABAQUS. Experiments were accomplished on the press in a quasi-static state. Results from the above three methods were found essentially identical. An empirical formula relating the contact force to the compression deformation of the braking cylindrical shells is given using the results of computation and experiment. The empirical formula can be used in the engineering design of the braking cylindrical shells and in the launching dynamics analysis of the weapon system.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2004年第9期762-765,共4页
Transactions of Beijing Institute of Technology
基金
教育部高等学校博士学科点专项科研基金资助课题(20010007003)
关键词
导弹垂直弹射装置
制动锥
有限元方法
渐进屈曲
结构冲击
vertical ejection launcher for missiles
braking cylindrical shell
FEM
asymptotic buckling
structural impact
