Principle, characteristics and application of technique up -to -date of pipe bending such as zero radius bending, MF induction bending, heat stress bending and Laser forming have been expounded.
论述了零半径弯曲、中频感应弯曲、热应力弯曲及激光弯曲成形等管材弯曲加工最新技术的原理、特点和工程应用。
Experiments of contact fatigue under the action of combined stresses-Hertsian stress and rotating bending stress were carried out.
作者就赫兹应力和旋转弯曲应力联合作用下的接触疲劳进行实验研究。
The effects of the connectors on the critical buckling load and the bending stress of pipes in horizontal section are analyzed.
分析了钻杆接头对水平井段钻柱屈曲临界力和弯曲应力的影响，提出了计算钻柱正弦屈曲临界力的新方法。
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