摘要
在管道的制造、安装和运行期间,不可避免地会产生类似于裂纹的缺陷,轴向裂纹是最常见的裂纹。确定含轴向裂纹管道在各种应力状态下的应力强度因子和J积分,是评价管道完整性和使用寿命的重要组成部分。根据Karlson和Backlund推导的考虑裂纹承载的修正J积分的表达式,结合帕里斯公式和权函数方法,论述了管道轴向裂纹面在内压作用下的J积分计算方法,并与其它计算方法进行了比较。
Combined with Paris equation and weight function method,J integral calculation method for axial cracks of pipeline subjected to internal pressure is presented in this paper. The method is in terms of revised J integral expression deducted by Karlson and Backlund, considering the condition that the crack surface is loaded. Meanwhile, the above calculation method is compared with other calculation methods.
出处
《油气储运》
CAS
北大核心
1999年第6期22-25,共4页
Oil & Gas Storage and Transportation
