流体机械

2008, No.435(09) 45-48

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金属垫片有效密封宽度有限元分析
Finite Element Analysis for the Metallic Gasket Effective Width

冯秀;魏龙;
FENG Xiu,WEI Long(Nanjing College of Chemical Technology,Nanjing 210048,China)

摘要(Abstract):

利用有限元软件ANSYS对不同螺栓载荷下的垫片接触应力分布进行了数值模拟。在此基础上,结合垫片系数m及内压,计算得到垫片有效密封宽度。结果表明,垫片有效密封宽度除受法兰密封面形状和垫片基本宽度影响外,还与法兰刚度和垫片几何尺寸有关;垫片有效密封宽度有限元计算值比GB150-1998规范计算值小。这为螺栓法兰金属垫片的设计与安全评价提供了参考。
The distribution of the contact stress of metallic flat gaskets was investigated using Finite Element Analysis(FEA).The gasket effective width values were obtained when the contact stress distribution,the gasket factor m and the internal pressure were given.The results indicate that the gasket effective width is mainly influenced by not only the sealing face shape of the flange and the geometric width of the gasket but also the rigidity of the flange and geometric dimension of the gasket.The gasket effective width obtained in this paper is smaller than that according to GB150-1998 design rules.The obtained results provided a helpful reference for the design of bolted flange connections.

关键词(KeyWords): 金属垫片;垫片有效密封宽度;垫片接触应力分布;有限元分析
metallic gasket;gasket effective width;distribution of contact pressure;finite element analysis

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作者(Author): 冯秀;魏龙;
FENG Xiu,WEI Long(Nanjing College of Chemical Technology,Nanjing 210048,China)

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