潜艇耐压结构泵水和下潜状态应力分析

Stress Analysis of the Submarine Pressure Hull Structure Underwater Test and Submerging Conditions

基于求解环肋柱壳的传统方法和有限元法,对潜艇耐压船体在受到内压和外压时应力状态进行了研究。根据传统理论和数值计算结果,对两种状态下的应力进行了详细的对比分析,可以得出受到内压状态时应力要小,并且随着设计潜深的加大两者的偏差也会加大。研究对正确理解泵水和下潜状态下应力之间的关系以及对潜艇结构设计都有重要意义。

By using the classical approach of the ring-stiffened cylindrical shell and finite-element method,stresses of a submarine pressure hull structure under both external and internal pressure were analyzed.By referring to the classical theory and numerical calculation results,the stresses under the two conditions were carefully compared and examined according to traditional theory and numerical results.The stress under the internal pressure is lower than that under the external pressure and the difference between the two will increase as the design depth increases.This provides further understanding of the stress relation between the two loading conditions and valuable advices on the design of submarine structure.