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为了研究U型钢弯曲成型过程中的各种影响因素对回弹角的影响,对U型钢回弹时回弹角的求解公式进行了理论推导,分析可知回弹角随相对弯曲半径值增大而增大;弯曲角越大,回弹角越大;弹性模量越大,回弹量越小。用有限元软件ANSYS建立模型,模拟分析相对弯曲半径、弯曲角和弹性模量对回弹角的影响。模拟分析可知,在相同的条件下,回弹角随相对弯曲半径值增大而增大,回弹量基本与相对弯曲半径成线性关系;弯曲角度的大小对回弹有显著的影响,在相同的条件下,弯曲角越大,回弹角越大;材料的弹性模量对回弹有显著的影响,回弹量随弹性模量的增大而减小。
In order to study the influence of various influencing factors on the bouncing angle during the U-shaped steel bending process, the formula for calculating the bouncing angle of the U-shaped steel during rebound has been derived theoretically. It can be known from the analysis that the rebound angle increases with the relative bending radius Increases; the greater the bending angle, the greater the rebound angle; the greater the elastic modulus, the smaller the amount of rebound. The finite element software ANSYS was used to establish a model to simulate and analyze the influence of relative bending radius, bending angle and elastic modulus on bouncing angle. The simulation analysis shows that under the same conditions, the rebound angle increases with the increase of relative bending radius, and the rebound value basically has a linear relationship with the relative bending radius. The bending angle has a significant effect on the rebound, The larger the bending angle, the larger the rebound angle. The elastic modulus of the material has a significant effect on the rebound, and the rebound amount decreases with the increase of the elastic modulus.