Considering the variable cross section thickness of longitudinal profiled plate and the dynamic reductions of straightening rolls, an analytical model combining curvature integral method with linear decreasing straightening scheme was proposed to investigate the longitudinal profiled plate straightening process. Moreover, the calculation flow and solution algorithm of longitudinal profiled plate straightening process were presented. To verify the proposed model, calculated straightening forces were compared with the measured values, and very good agreements were achieved. Then, the reduction, contact angle, reverse bending curvature, residual curvature, straightening force and straightening moment of longitudinal profiled plate in the straightening process were calculated and analyzed, and the calculated results show that the curvature integral method can be used to reveal the mechanism of longitudinal profiled plate straightening.

考虑到纵向异型板的横截面厚度可变以及矫直辊的动态压下量，提出了一种结合曲率积分法和线性递减矫直方案的解析模型来研究纵向异型板的矫直过程。给出了纵型材校直过程的计算流程和求解算法。为了验证所提出的模型，将计算出的矫直力与测量值进行了比较，并获得了很好的一致性。然后，计算并分析了矫直过程中纵向异型板的减小量，接触角，反向弯曲曲率，残余曲率，矫直力和矫正力矩，