钻杆公接头台肩转角处表面裂纹有限元计算  

Finite Element Calculation for Surface Cracks at Shoulder Fillet of Tool Joint Pins

作　　者：赵华[1] 李中华[1] 匡震邦[1] 张毅[1] 李鹤林[1] 

机构地区：[1]西安交通大学力学所,宝鸡石油管材研究中心

出　　处：《石油机械》1994年第1期32-38,共7页China Petroleum Machinery

摘　　要：论述应用三维有限元位移法，对不同型号钻杆公接头台肩转角处不同形态半椭圆表面裂纹在内压、拉伸、弯曲和扭转载荷下应力强度因子进行计算的方法。在大量有限元数值计算的基础上，给出包括公接头结构参数及裂纹形态参数在内的应力强度因子的近似计算公式。This article describes how to use the 3-D finite element displacement method to calculate the stress intensity factor of the semi-elliptic surface cracks of different shapes at the shoulder fillet of various tool joint pins under inner pressure and loads of tension,bending and torsion. On the basis of a large number of calculations,the article presents an approximate equation for calculating the stress intensity factor including the structural parameters of the pinand the shape parameters of the cracks.

关 键 词：钻杆 公接头 裂纹 应力 有限元法 

分 类 号：TE921.2[石油与天然气工程—石油机械设备]