锻压技术

一种旋转折弯成形的数值模拟方法及实验验证

英文标题：A numerical simulation method and experimental verification for rotary bending

作者：胡志超王云超林荣川陈亚洲郑添义

分类号：TG386

出版年,卷(期):页码：2021,46(3):70-74

摘要：

旋转折弯成形是板料的一种特殊的自由折弯成形方法，准确预测其回弹误差是控制旋转折弯角精度的前提。鉴于Dynaform软件无法直接实现旋转折弯成形的模拟，在分析Dynaform前处理器所生成的DYN文件的基础上，通过定义旋转动模的惯性张量参考坐标系、惯性张量、旋转坐标轴、自由度和旋转运动曲线等参数值，提出了一种旋转折弯成形的数值模拟方法。通过模拟结果与实验结果的对比，验证了该数值模拟方法的可行性和有效性。该模拟方法为旋转折弯成形的回弹误差预测及回弹控制提供了一种有效途径，对其他类似旋转成形的数值模拟具有一定的实际参考价值。

Rotary bending is a special free bending method of sheet metal, and the accurate prediction of springback error is the prerequisite for controlling the accuracy of rotary bending angle. Considering that the software Dynaform could not directly realize the simulation of rotary bending, based on the analysis of DYN files generated by Dynaform preprocessor, a numerical simulation method of rotary bending was proposed by defining parameter values of rotary bending die such as reference coordinate system of inertial tensor, inertia tensor, rotation coordinate axis, degrees of freedom and curve of rotation motion. Then, comparing the simulated results with the experimental results, the feasibility and validity of the simulation method were verified. Thus, an effective way was provided for springback error prediction and springback control of rotary bending by this simulation method. So the simulation method has certain practical reference value for other numerical simulations of similar rotary forming.

基金项目：

福建省科技计划重点项目（2018H0024）；福建省自然科学基金资助项目（2019J01709）；厦门市重大科技项目（3502Z 20191022）

胡志超（1975-），男，硕士，副教授 E-mail：hzc0204@163.com 通讯作者：王云超（1976-），男，博士，教授 E-mail：ychaowang@jmu.edu.cn

参考文献：

[1]王飞，游有鹏.基于材料参数检测的板料回弹预测方法[J].沈阳工业大学学报，2011,33（5）:545-555.

Wang F, You Y P.Prediction method for springback of sheet metal based on material parameter detection [J].Journal of Shenyang University of Technology, 2011,33(5): 545-555.

[2]胡志超，李延平，常勇，等.基于数值模拟的板料冲压成形回弹补偿方法[J].锻压技术，2012,37(2):163-166.

Hu Z C, Li Y P, Chang Y, et al.Compensation algorithm for springback in sheet metal forming based on numerical simulation [J].Forging & Stamping Technology, 2012, 37(2):163-166.

[3]马子超，冯再新，苏晓波，等.板料弯曲成形中回弹预测和控制的研究进展[J].锻压装备与制造技术，2015，50（5）:59-63.

Ma Z C, Feng Z X, Su X B, et al.Research progress on prediction and control of springback in sheet metal bending process [J].China Metalforming Equipment & Manufacturing Technology, 2015，50(5): 59-63.

[4]胡志超，李延平，常勇，等.基于Dynaform的回弹补偿算法与系统[J].机械设计与研究，2012,28（4）:5-9.

Hu Z C, Li Y P, Chang Y, et al.The compensation algorithm and system for springback in sheet metal forming based on Dynaform [J].Machine Design & Research, 2012,28(4):5-9.

[5]王银芝. 基于Dynaform的方盒形体拉深成形的数值模拟与分析[J]. 机床与液压，2011，39（13）：114-117.

Wang Y Z.Numerical simulation and analysis of rectangular case′s forming based on Dynaform[J].Machine Tool & Hydraulics, 2011, 39(13): 114-117.

[6]Hallquist J O. LS-DYNA Keyword User′s Manual（Version 971）:Volumes I and II[M]. California: Livermore Software Technology Corporation，2007.

[7]赵海鸥.LS-DYNA动力分析指南[M].北京：兵器工业出版社，2003.

Zhao H O.LS-DYNA Dynamic Analysis Guide[M].Beijing: Armament Industry Press, 2003.

[8]雷尚军，宋建丽，邢丰，等.花键冷敲精密成形模拟中Ansys/Ls_dyna关键技术研究[J].锻压装备与制造技术，2013,48（3）：96-98.

Lei S J, Song J L, Xing F, et al.The Ansys/Ls-dyna key technology research during rapid cold-rolling spline forming simulation[J].China Metalforming Equipment & Manufacturing Technology, 2013,48(3): 96-98.

[9]Lian F B.Plastic behavior and stretchability of sheet metals.Part Ⅰ: A yield function for orthotropic sheets under plane stress conditions [J].International Journal of Plasticity, 1989, (5): 51-66.

[10]王秀风，杨春雷.板料成形CAE设计及应用[M].北京：北京航空航天大学出版社，2016.

Wang X F, Yang C L.CAE Design and Application of Sheet Metal Forming[M].Beijing: Beihang University Press, 2006.

[11]赵国伟，王元勋，陈建桥，等.板料成形回弹的数值模拟与影响因素[J].锻压装备与制造技术，2005，40（3）：55-58.

Zhao G W, Wang Y X, Chen J Q, et al.Numerical simulation & infecting factors of springback in sheet metal forming[J].China Metalforming Equipment & Manufacturing Technology, 2005,40(3):55-58.

[12]代洪庆，赵妍，户春影，等.V形件自由弯曲回弹的数值模拟影响因素分析[J].黑龙江八一农垦大学学报，2010,22（3）：26-29.

Dai H Q, Zhao Y, Hu C Y, et al.Simulation analysis of V-bending forming and influencing factors of springback[J].Journal of Heilongjiang August First Land Reclamation University, 2010,22(3):26-29.

服务与反馈：

【文章下载】【加入收藏】