Q235钢厚向弯曲试验及其分析

Test and analysis on bending Q235 steel along thickness direction

具有正交各向异性的金属板料纵向和横向弯曲性能存在明显差异,为了解纤维沿厚度方向分布的金属板的弯曲性能,通过两个具有不同底部弧面半径的凸模,按照规定的弯曲角,分别对具有不同厚度的Q235钢片进行纵向、横向和厚向弯曲试验,得出该材料在3个方向的最小相对弯曲半径的范围,结果表明,厚向弯曲时,最小相对弯曲半径是介于纵向弯曲和横向弯曲之间,且与纵向弯曲更接近。

There are obvious differences between the longitudinal and transverse bending performance of orthotropic metal plate.In order to understand the bending performance of the metal plate with fibers distributed along the thickness direction,bending test was done according to prescriptive bending angle for Q235 steel discs with different thickness in longitudinal,transverse and thickness directions by two punches with different bottom arc radius and the ranges of minimum relative bending radius were obtained respectively.The results show that the value of minimum relative bending radius for bending along thickness direction is between that of longitudinal and transverse bending,and near to that of longitudinal bending.