【摘要】 运用有限元分析软件,对不锈钢与铝合金法兰之间的O形环密封进行了分析。分析中考虑了材料的弹塑性变形。分析表明:对于5 mm×0.5 mm规格的预紧型不锈钢O形密封环,10%~20%的压缩量下的密封性能较佳,密封宽度0.2~0.3 mm,接触压力80~120 MPa,预紧比压100~130 N/mm,这与O形环的设计压扁力120 N/mm较为吻合。更多还原

【Abstract】 Using finite element computed program, O-ring seal performance by using flanges of stainless steel and aluminum alloy was analyzed.The elasto-plastic strain was considered in the finite element analysis.The calculated results show,for 5 mm×0.5 mm pre-tightened stainless steel O-ring,it has the best sealing capability when the compression ratio range is in the region of 10%-20%.The seal width is 0.2-0.3 mm,and the contact pressure is 80-120 MPa.The sealing pressure ratio is in the region of 100-130 N/mm,which agrees well with the design pressure force 120 N/mm.更多还原