随着装备制造业的发展，越来越多新的薄板带材加工工艺得到发展，对这些新工艺建立有限元模型，有助于研究材料在工艺过程中的变形特点。双辊柔性滚弯工艺以其成形一致性好、速度快、精度高、成形零件表面质量高等优点被应用于薄板带的卷圆成形中，其中回弹是该成形工艺实施过程中最主要的也是最难控制的缺陷，针对该问题，本文对双辊柔性滚弯过程开展系统的理论分析和实验研究，为双辊柔性滚弯回弹预测及其工艺方案的制订提供理论指导。首先介绍了金属材料在正反向循环加载时的塑性行为，基于半隐式迭代方法对Yoshida-Uemori双面塑性本构模型进行了数值化实现，编写了适用于ABAQUS显式计算模块的VUMAT用户自定义子程序。建立了更符合工程实际的双辊柔性滚弯过程有限元模型，通过数值模拟研究了钢辊压下量对3J21钢带的成形过程的影响。使用自主设计的小型双辊滚弯机进行了实验验证，结果表明所构建的三维有限元模型可以准确地预测带材在滚弯和回弹后的成形结果。在此基础上，设计了前张力下的双辊柔性滚弯复合加工工艺的实验装置，开展了相关的实验研究工作。设计并制作了防止薄板平面内压缩失稳的夹具，进行了薄板单轴拉压实验以确定3J21钢材的Yoshida-Uemori模型参数。根据复合工艺过程中金属材料在复杂受力状态和非线性加载路径下的变形特点，应用所编写的VUMAT子程序完成了其有限元建模，模拟计算结果误差小于10%，验证了Yoshida-Uemori模型在复杂受力状态和非线性加载路径下能够较为准确地反映材料的塑性响应，对最终的回弹结果具有较高的预测能力。通过对比纯滚弯与前张力下滚弯后的成形结果可以发现，钢辊压下量对带材成形段圆弧直径大小的影响相反。在有前张力的情况下，带材成形段边缘产生了较大的残余应力，其余大部分区域残余应力比纯滚弯时略小。本文所构建的Yoshida-Uemori模型数值计算平台，可以广泛地应用在高强钢等金属材料在复杂加载和非线性加载路径下的塑性成形有限元模拟中，对提高数值计算结果精度具有积极意义。所提出的前张力下的双辊柔性滚弯复合工艺过程，考虑了生产中收料、送料装置对成形过程的影响，具有一定的实际应用价值。

More and more sheet/strip forming methods have developed with the pace of development of equipment manufacturing. Two-roller bending is a typical forming method of the metal strip, owing to high speed and precisions. Springback is the most important and difficult defect to control in the forming process. To solve this problem, this paper carries out systematic theoretical analysis and experimental research on the two-roller bending process, which provide guidance for the design of the process.In this paper, a finite element model is established on ABAQUS and the two-roller bending process of steel 3J21 strip is simulated. Experiments are carried out by using a developed lab-scale two-roller bending machine. The results show that the established three-dimensional finite element model can accurately predict the springback of the strip. According to the deformation characteristics of the two-roller bending process combined with front tension, the Yoshida-Uemori two-face plastic constitutive model is introduced, and the its numerical realization based on ABAQUS is implemented through VUMAT subroutine. The experimental device of two-roller bending process combined with front tension is designed and the related experiment is performed in this paper. The finite element model of this hybrid process is built. Compared with the experimental results, it is found that the Yoshida-Uemori model can accurately describe the plastic response under complex loading condition and nonlinear loading path with a strong ability to predict springback results, the error of simulation results is less than 10%.In this paper, the calculation platform for the plastic constitutive model considering Bauschinger effect can be widely used in the finite element simulation of plastic forming process for high-strength steel and other metal materials under complex loading and nonlinear loading paths. It has positive significance for improving the accuracy of numerical calculation results.