固体火箭发动机密封结构随机有限元可靠性分析

Reliability analysis of the SRM sealing structure based on stochastic finite element method

通过研究固体发动机密封结构主要部件橡胶O形密封圈的力学性能,应用积分类随机有限元法实现了密封结构随机因素下的结构响应,完成了固体发动机密封结构在长时间贮存老化和工作状态下的力学性能模拟及随机有限元可靠性分析。

This paper has researched the mechanical property of the rubber O-ring which is the major part of the sealing structure, and obtained the structural respond of the rubber sealing ring of the SRM under uncertain factors by the integral stochastic finite element method （ISFEM）. The paper has accomplished the mechanical property simulation and the reliability analysis of the SRM sealing structure respevtively under natural aging and working conditions.