含凹坑圆柱壳的剩余强度系数  

The Remaining Strength Factor of Cylindrical Shells with Pits

作　　者：李思源 唐毅 胡荣 李祚成[2] 

机构地区：[1]中核武汉核电运行技术股份有限公司,湖北武汉430223 [2]兰州石油机械研究所,甘肃兰州730050

出　　处：《压力容器》2009年第7期18-22,28,共6页Pressure Vessel Technology

摘　　要：应用API 579局部减薄2级评定方法的原理,研究了含椭球面和球面凹坑圆柱壳剩余强度系数(RSF)的计算方法,建立了简便的计算公式;系统地计算了轴向含椭球面和球面凹坑圆柱壳的RSF值,并用表格按圆柱壳椭球面凹坑的两个参量α和g列出了能直接用于工程评定的RSF值。对GB/T19624中圆筒形容器的凹坑评定方法进行了讨论。Using level 2 assessment procedures of locally metal loss in API 579, the calculation methods of remaining strength factor （RSF） are studied for cylindrical shells with ellipsoidal and spherical pits, convenient calculation formulas are established. The RSF of cylindrical shells with axial ellipsoidal and spherical pits are calculated systematically, and the values of the RSF which can be directly used for engineering assessment are presented in charts in terms of the two parameters a and g. The assessment methods of pits on cylindrical vessels in GB/T 19624 are discussed.

关 键 词：圆柱壳构件 椭球面凹坑 球面凹坑 剩余强度系数 计算方法 

分 类 号：TQ055.8[化学工程] TQ050.2