摘要
硅橡胶密封圈的力学性能会随着工作时间的增加而发生退化,本文首先初步分析硅橡胶的热氧老化机理,然后对硅橡胶材料在热氧加速老化试验前后的特性参数进行分析对比,并借助非线性有限元分析软件ABAQUS对由该种材料制成的O形圈老化前后的最大接触应力等力学参数进行分析计算,最后讨论了这些参数变化对结构密封效果的影响。本文的研究结果可为长寿命密封圈设计提供参考。
The mechanics parameters of silicon rubber seals degenerate as working time increas- ing. Firstly, the mechanics of thermal oxidization aging is analysed in this article. Then the sili- con rubber seals＇ material parameters are contrasted before and after the aging test. The O-ring＇ s mechanics parameters, such as maximal contact stress, are calculated with the non-liner finite element analysis software ABAQUS. Lastly, the influence on seal effect of the parameters change is analysed. The research findings can provide some references to design long-life seals.
出处
《航天器工程》
2014年第3期49-53,共5页
Spacecraft Engineering
基金
国家重大科技专项工程
关键词
航天器结构
硅橡胶密封圈
热氧老化
有限元分析
接触应力
spacecraft structure
silicon rubber seals
thermal oxidization aging
finite element analysis
contact stress
