﻿ 拉断螺栓式固弹装置动态力学性能对发射内弹道的影响分析
 舰船科学技术  2019, Vol. 41 Issue (6): 154-157 PDF

1. 中国船舶重工集团公司第七一三研究所，河南 郑州 450015;
2. 河南省水下智能装备重点实验室，河南 郑州 450015

Research on dynamic mechanical properties of the snap-bolt fixed device during the missle launching
SUI Jiu-ling1,2, XIONG Wen-hui1,2, LI Peng-yong1,2, LUO Liang1,2
1. The 713 Research Institute of CSIC, Zhengzhou 450015, China;
2. Henan Key Laboratory of Underwater Intelligence Equipment, Zhengzhou 450015, China
Abstract: A Research on the dynamic mechanical properties of the snap-bolt fixed device during missle launch are conducted by finite element method. According to the simulation results, the launch interior ballistic calculation model is modified. Finally, the correctness and accuracy of the modified model are verified through the comparison between the calculated results and test data. Besides, this method can also be used to modify the calculation model of missle with another snap-bolt fixed device.
Key words: snap-bolt fixed device     dynamic mechanical properties     interior ballistics
0 引　言

1 拉断螺栓结构

 图 1 拉断螺栓结构简图及布置形式 Fig. 1 Structural layout of snap-bolt

 图 2 拉断螺栓拉断力检验结果分布规律 Fig. 2 Distribution pattern of breaking force test results of snap-bolt

2 拉断螺栓的非稳态结构仿真

 图 3 拉断螺栓式固弹装置的几何模型及网格划分情况 Fig. 3 Geometric model and mesh generation of snap-bolt fixed device

 图 4 拉断螺栓式固弹装置的边界条件 Fig. 4 Boundary conditions of snap-bolt fixed device
 $f\left( t \right) = \left\{ \begin{array}{l} 0.101,t \text{≤} 0.0018{\text{，}}\\ 44t + 0.24,0.0018 < t \text{≤} 0.003{\text{。}} \end{array} \right.$

 图 5 压力边界条件及拟合曲线 Fig. 5 Pressure boundary condition and fitting curve

 图 6 拉断螺栓式固弹装置的Von-Mises等效应力云图 Fig. 6 Von-Mises equivalent stress results of snap-bolt fixed device

 图 7 拉断螺栓式固弹装置的仿真结果曲线 Fig. 7 Simulation curves of snap-bolt fixed device
3 发射内弹道模型及计算结果

 图 8 发射内弹道过程曲线计算/实测对比 Fig. 8 Curve contrast between original calculate and test results

 图 9 修正后发射内弹道过程曲线计算/实测对比 Fig. 9 Curve contrast between corrected calculate and test results
4 结　语

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