静水压力对水下滑翔器O形圈密封性能影响的数值分析  

Numerical analysis on the effect of hydrostatic pressure on sealing performance of O-ring of underwater guider

作　　者：刘德良 张世锋 王天霖 曹淑华 LIU De-liang;ZHANG Shi-feng;WANG Tian-lin;CAO Shu-hua(Ship and Ocean Engineering College,Dalian Maritime University,Dalian 116026,China;Continuing Educational College,Dalian Maritime University,Dalian 116026,China)

机构地区：[1]大连海事大学船舶与海洋工程学院,辽宁大连116026 [2]大连海事大学继续教育学院,辽宁大连116026

出　　处：《大连海事大学学报》2019年第4期26-34,共9页Journal of Dalian Maritime University

基　　金：辽宁省教学改革项目(0039061838)

摘　　要：利用Workbench软件模拟不同压缩率下静水压力对O形圈变形、范·米塞斯应力和接触压力的影响,得到其间的对应关系.计算表明,静水压力对密封圈变形的影响随着压缩率的增大而减小;压缩率较小时,静水压力的增加会引发挤入现象,从而使范·米塞斯应力急剧增大,导致密封圈破坏,故水深较大时,需较大的压缩率或添加挡圈;在不同的压缩率下,接触压力随静水压力的增加而增大,最大接触压力始终大于静水压力,可保证其正常的密封性能.计算结果可为完善水下滑翔器密封结构的设计提供参考.Workbench software was used to simulate the effects of hydrostatic pressure on O-ring deformation, Van Mises stress and contact pressure under different compression rates, and the corresponding relations between them were obtained. The calculation results show that the influence of hydrostatic pressure on seal ring deformation decreases with the increase of compression ratio;when compression ratio is small, the increase of hydrostatic pressure will lead to squeezing phenomenon, which makes the Van Mises stress increase sharply with the result of seal ring failure, so when the water depth is large, a larger compression ratio or a retaining ring is necessary;the contact pressure increases with the increase of hydrostatic pressure under different compression ratio, and the maximum contact pressure is always greater than hydrostatic pressure to ensure its normal sealing performance. The calculation results can provide a reference for improving the design of underwater glider sealing structure.

关 键 词：静水压力 水下滑翔器 O形圈 密封性能 有限元分析 

分 类 号：TB42[一般工业技术]