鱼雷尾轴开伞冲击仿真及试验分析

Simulation and Test Analysis of Impact of Parachute Open on Torpedo Stern Shaft

为解决鱼雷后段狭小空间内高强度尾轴设计难题,以轻型鱼雷尾轴组件为研究对象,利用Abaqus有限元软件开展静强度和振动冲击分析,获得火箭助飞鱼雷飞行后期降落伞打开瞬间,鱼雷尾轴组件的最大应力区域,找出尾轴组件薄弱环节,据此开展结构设计和工艺优化,并对优化后的产品进行地面试验测试,以验证优化设计的有效性。结果表明,通过仿真分析与地面试验结合进行迭代优化,可以提高鱼雷尾轴组合等精密结构件的设计精度和研制效率,满足多种复杂工况下的使用要求。

To solve the design problem of a high-strength stern shaft in a narrow torpedo space,with the light torpedo stern shaft assembly as the research object,Abaqus finite element software was used to perform static strength and vibration impact analysis,to obtain the maximum stress area of the torpedo stern shaft assembly on the parachute-opening moment at the latestage of rocket-assisted torpedo flight,and determine the weakest point.Accordingly,to improve the structural design and process optimization,the optimized products are then tested to verify the effectiveness of the optimized design.The test results show that the iterative improvement method with finite element analysis and land test can enhance design accuracy and efficacy,especially for complicated structures such as torpedo stern shaft assembly,and to meet the complicated use requirements.