Q235—A钢管弯曲回弹角建模与分析

Modeling and analyzing the bending re-spring angle of pipe Q235-A

分析Q2 3 5—A钢管弯曲回弹过程 ,利用残余应力分布规律、静力矩平衡条件、变形协调条件等回弹理论推出回弹曲率和回弹角的计算公式 ,计算其回弹角并与实测值比较。比较结果表明 ,弯曲角度和弯曲半径与管子直径比值改变时 ,误差不同。在一定条件下 ,误差在 5

Analyzes the changing process of the stress and strain of pure plastic bending re spring for pipe According to the function on stress of re spring,the condition of the balance of moment and coordination of deform,calculating formulas of the re spring angle and the re spring curve of pipe are inferred.The experiamental result shows that formulas are so precise that it can be applied in engineering.