摘要
通过J积分的弹塑性解,计算了含轴向裂纹管道在内压作用下的撕裂模量,叙述了撕裂模量相对于J积分的裂纹扩展稳定性评定图的绘制方法,并结合实例,分析了受压管道轴向裂纹稳定扩展的载荷范围,预测了裂纹失稳扩展时的临界压力。
Stability assessment method for pipeline with axial cracks subjected to internal pressure is stated in this paper through calculating elastic-plastic J integral and tearing modulus. Meanwhile, critical pressure is anticipated in unstable crack propagation.
出处
《油气储运》
CAS
北大核心
1999年第7期23-26,共4页
Oil & Gas Storage and Transportation
关键词
轴向裂纹
计算
稳定性评价
输油管道
J integral,tearing modulus,axial crack,stability assessment
