基于有限元法的全回转吊舱壳体结构分析及优化

Structure Analysis and Optimization for Rotary Pod Shell Based on Finite Element Method

由于全回转吊舱壳体在船舶航行时承受着较大的推力和重力,壳体的可靠性与整机的可靠性密不可分,因此壳体的强度是考核其可靠性的首要指标。通过采用有限元法对全回转吊舱壳体分剐进行了强度分析及结构优化。结果表明,吊舱优化后,大幅减轻了壳体的质量,减少了其他设备安装对吊舱内部结构的限制,提升了安全系数,提高了吊舱运行指标,同时优化后的壳体其危险部位的最大应力和位移能够满足材料的强度及刚度要求,因此吊舱壳体的优化设计是可靠的。

Due to be subjected to large gravity and thrust, the reliability of the rotary podshell is closely related to the reliability of the whole machine. The strength of the shell is theprimary index of reliability assessment. The finite element method is used for the strength a-nalysis and the structure optimization of the rotary pod shell. The following conclusions canbe obtained the optimization can lighten the mass of shell, eliminate the internal structurelimitation of pod for equipment installation, improve the safety coefficient and increase the op-eration index. Maximum stresses and displacements of the shell risk parts can all satisfy therequirements of the strength and rigidity of the materials after optimization, thus the optimaldesign of the pod shell is reliable.