摘要
在已进行过的关于管道表面裂纹的应力强度因子计算工作中,都只局限于化工或核工业使用的厚壁管道,对于输送油气的薄壁管道其表面裂纹应力强度因子尚未见到有关文献报道用有限单元法计算了超薄壁管道中一些轴向和环向表面裂纹尖端的应力强度因子。给出了近似计算公式,并对结果进行了分析讨论。对于轴向裂纹,内表面裂纹与外表面裂纹的应力强度因子基本相同。内表面裂纹的略大一点。
Although much attention has been paid to the calculation of stress intensity factors (SIFs ) on pipe cracks,the SIFs of surface cracks in thin oil and gas pipes have not been published. Three-dimensional finite element analysis has been conducted to calculate the SIF for longitudinal and circumference surface cracks in thin pipes (internal radius wall thickness >30). and the approximate calculation equations have been obtained. The results can be used for the integrity assessments of oil and gas pipes.
出处
《油气储运》
CAS
北大核心
2001年第3期25-28,共4页
Oil & Gas Storage and Transportation
