摘要
应用应力强度因子表达式,在线弹性断裂力学K_I=K_(IC)判据的基础上,提出了25.40mm、22.23mm、19.05mm、15.88mm等4种规格的20CrMo钢D级抽油杆杆体存在局部表面缺陷时确定缺陷临界尺寸的8张图线,并举例说明了工程中使用这些图线的具体方法。对抽油杆杆体实际表面缺陷的简化也提出了原则性的处理意见。
According to the criterion K_I= K_(IC) given in linear-elastic fracture mechanics and using the expression of stress-intensity factor, this articlc presents eight graphs for determining the critical size of local surface defect on the body of grade D sucker rods of four sizes: 25.40, 22.23, 19.05 and 15.88mm. An example is given to explain the method of using these graphs. Recommended practices are presented for regularizing actual surface defects for the convenience of study.
出处
《石油机械》
北大核心
1990年第7期22-30,7-8,共9页
China Petroleum Machinery
