Based on lots of tube bending experiments,the stress-strain state along the tangential direction of bending line and the direction of the wall thickness is analyzed.

• 通过大量管材弯曲试验,分析了沿弯曲线的切向和管壁厚方向的应力应变状态,给出弯管内、外侧管壁厚变化量和切向应变的近似计算公式。