锻压技术

四辊连续滚弯侧辊位移计算与数值模拟

英文标题：Calculation of displacement and numerical simulation on side roller in four-roller continuous roll bending

作者：周迟孙宇刘庆印常欣武凯盛玉龙

分类号：TG335

出版年,卷(期):页码：2017,42(7):36-42

摘要：

在四辊卷板过程中，卷制工件的曲率主要取决于侧辊的位移量。以塑性弯曲理论为基础，对四辊连续滚弯过程中板材各阶段的变形情况进行了理论分析。根据卸载定理推导出双线性硬化模型板材的回弹曲率计算公式，建立了四辊连续滚弯侧辊位移的数学模型。利用ABAQUS有限元软件对四辊连续滚弯过程进行三维动态模拟，对仿真值和理论值进行了比较，分析了不同板厚下侧辊进给量、相对弯曲半径与成形曲率半径之间的关系。结果表明：有限元仿真误差较小，可以用来指导实践；随着侧辊进给量的增加，板厚对成形曲率半径的影响逐渐减小；成形曲率半径随着相对弯曲半径的增加基本呈线性关系变化。

The curvature of rolled workpiece mainly depends on the displacement of side roller in the process of four-roller continuous roll bending. Therefore, the deformation of plate during the process of four-roller continuous roll bending was analyzed theoretically based on the theory of plastic bending. Then, according to the unloading theorem, the formula of springback curvature of bilinear hardening model plate was derived, and a mathematical model for calculating the side roller displacement in the process of four-roller continuous roll bending was established. Furthermore, the three-dimensional dynamic simulation of four-roller continuous roll bending process was carried out by the ABAQUS FEM software, and the relationships between side roller feed, relative bending radius and forming curvature radius with different plate thicknesses were analyzed by comparing simulation values with theoretical values. The results show that the finite element simulation error is small, so it can effectively guide the practice. With the increase of side roller feed, the influence of plate thickness on the forming curvature radius decreases gradually, and the forming curvature radius is basically linear with the increase of relative bending radius.

基金项目：

国家国际科技合作专项项目（2015DFR70090）

作者简介：周迟（1993-），男，硕士研究生，E-mail：zhouchi1028@163.com；通讯作者：孙宇（1964-），男，博士，教授，E-mail: sunyu@mail.njust.edu.cn

参考文献：

[1]王凯，陈富林，许朝阳，等. 四辊卷板机中方圆卷制工艺的制定与数学模型的建立[J]. 锻压装备与制造技术，2011, 46(6)：56-60.

Wang K, Chen F L, Xu C Y, et al. Mathematical model establishment of polycentric circle rolling process in four-roll plate bending machine[J]. China Metalforming Equipment & Manufacturing Technology, 2011, 46(6): 56-60.

[2]仉志强，宋建丽，付建华，等. 板材弯卷成形工艺的研究现状[J]. 塑性工程学报，2014，21(1)：1-6.

Zhang Z Q, Song J L, Fu J H, et al. Research status of plate bending and roll-bending process[J]. Journal of Plasticity Engineering, 2014, 21(1): 1-6.

[3]李森，陈富林，李斌. 四辊卷板机弯卷过程中侧辊位移计算[J]. 锻压技术，2011，36(6)：76-79.

Li S, Chen F L, Li B. Calculation of side roller displacement for four-roll bending plate process [J]. Forging & Stamping Technology, 2011, 36(6): 76-79.

[4]李云云，严思杰，许璐璐. 基于数模平台的四辊卷板机辊轮工艺位置的计算[J]. 锻压技术，2010，35(5)：80-83.

Li Y Y, Yan S J, Xu L L. Roll position calculation for four-rolls plate bending process based on mathematical modeling[J]. Forging & Stamping Technology, 2010, 35(5): 80-83.

[5]陈德道，杨晋，安虎平. 四辊卷板机侧辊工艺位移计算模型的研究[J]. 锻压装备与制造技术，2015，50(3)：44-48.

Chen D D, Yang J, An H P. Study on calculation model of process displacement for side rollers in four-roll plate bending machine[J]. China Metalforming Equipment & Manufacturing Technology, 2015, 50(3): 44-48.

[6]宋坤, 武凯, 刘庆印,等. 四辊卷板成形过程理论分析与数值仿真[J]. 锻压技术, 2017, 42(1):137-142.

Song K, Wu K, Liu Q Y, et al. Theoretical analysis and numerical simulation on four-roll rolling process[J]. Forging & Stamping Technology, 2017, 42(1):137-142.

[7]王艳，胡捷飞，许光辉，等. 四辊预弯与连续滚弯成形的机理与试验分析[J]. 塑性工程学报，2016, 23(4)：69-75.

Wang Y, Hu J F, Xu G H, et al. Theoretical and experimental analysis of four-roll pre-bending and continuous bending[J]. Journal of Plasticity Engineering, 2016, 23 (4): 69-75.

[8]Salem J, Champliaud H, Feng Z, et al. Experimental analysis of an asymmetrical three-roll bending process[J]. The International Journal of Advanced Manufacturing Technology, 2016, 83(9-12): 1823-1833.

[9]Feng Z K, Champliaud H. Modeling and simulation of asymmetrical three-roll bending process[J]. Simulation Modelling Practice & Theory, 2011, 19(9): 1913-1917.

[10]赖松柏，陈同祥，于登云. 滚弯成形解析建模与数值分析[J]. 宇航材料工艺，2011，41(5)：18-22.

Lai S B, Chen T X, Yu D Y. Analytical modeling and simulation of roll-bending process[J]. Aerospace Materials & Technology, 2011, 41 (5): 18-22.

[11]Lin Y H, Hua M. Influence of strain hardening on continuous plate roll-bending process[J]. International Journal of Non-linear Mechanics, 2000, 35(5): 883-896.

[12]余同希. 塑性弯曲理论及其应用[M]. 北京：科学出版社，1992.

Yu T X. Plastic Bending Theory and Its Application[M]. Beijing:Science Press, 1992.

[13]Hua M, Lin Y H. Large deflection analysis of elastoplastic plate in steady continuous four-roll bending process[J]. International Journal of Mechanical Sciences, 1999, 41(12): 1461-1483.

[14]龚靖平，黎向锋，左敦稳，等. 小直径开缝衬套双轴柔性滚弯成形的三维有限元分析[J]. 中国机械工程，2015，26(8)：1117-1124.

Gong J P, Li X F, Zuo D W, et al. Three-dimensional FEA of manufacturing process of small-diameter split sleeve by two-axle bending[J]. China Mechanical Engineering, 2015, 26(8): 1117-1124.

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