潜艇发射筒保护盖力学性能分析

摘要

Objective To study mechanical properties of submarine launch canister protection cover under deepwater pressure and temperature load.Methods Model for mechanical and temperature load of protection cover was established. Finite-element method was used to analyze the stress, deformation, temperature distribution and thermal structure under those loads.Results Under deep water pressure, the deformation was 0.977 cm to 1.47 cm, the stress was 1.22 MPa ~ 7.91 MPa. Under temperature load, the deformation of the protection cover is 0.92~1.38 cm and the stress was 0.272 kPa ~ 1.26 MPa.Conclusion The maximum deformation of protection cover was on centre portion in two working conditions, so the structural strength of centre portion should be reinforced, otherwise it would be damaged.%目的 研究艇载发射筒保护盖在深水压力和温度载荷下的力学性能.方法 建立保护盖力学载荷和温度载荷模型,采用有限元技术仿真计算保护盖在这些载荷下的形变、应力、温度分布和热结构情况.结果 深水压力载荷作用下,保护盖出现的形变大小在0.977~1.47 cm范围内,应力大小在1.22~7.91 MPa范围内.温度载荷下出现的形变大小在0.92~1.38 cm范围内,应力大小在0.272~1.26 MPa范围内.结论两种工况下保护盖最大形变均出现在中部,因此这个部位结构强度需加强,以防其被破坏.