锻压技术

某汽车前门内板冲压成形仿真起皱评价指标失效研究

英文标题：Research on invalidation of wrinkling evaluation indicator in stamping simulation of an automobile front door inner panel

作者：申丹凤1 聂昕2 覃超圣1 李开文3 王丽珠3 陈伊娜3 韦庆峰3

单位：1.湖南湖大艾盛汽车技术开发有限公司 2. 湖南大学 3.上汽通用五菱汽车股份有限公司

关键词：汽车前门内板冲压成形起皱评价指标起皱高度

分类号：TG394

出版年,卷(期):页码：2023,48(2):68-76

摘要：

以某汽车前门内板拉延过程中出现的起皱缺陷为例，通过鱼骨分析法对起皱原因进行排查，并对前期工艺设计阶段的冲压仿真进行回顾，得出仿真与实际流入量情况基本一致。再通过起皱趋势、表面缺陷高度、过程分析以及成形性等冲压仿真的起皱评价指标对前门内板的拉延过程进行评估，发现以上起皱评价指标在产品平缓区域存在失效情况。针对此情况，引入起皱高度Δ，并将其与板料跟上模的接触距离关联起来，通过板料厚度的3%、5%和10%这3个阈值对冲压件的起皱进行量化分级，同时优化冲压成形仿真参数设置，提出了针对产品平缓区域的起皱评价指标及流程。最后，通过工程验证，该起皱评价指标及流程对产品平缓区域的起皱评估有效。

For the wrinkle defects in the drawing process of automobile front door inner panel, the causes of wrinkles were investigated by fish-bone analysis method, the stamping simulation in the previous process design stage was reviewed, and the simulation and actual inflow situations were obtained as the same basically. Then, the drawing process of front door inner panel was evaluated by the wrinkling evaluation indicators of stamping simulation, such as wrinkling trend, surface defect height, process analysis and formability, and it was found that the about wrinkling evaluation indicators had invalidation situation in the flat area of product. Furthermore, in view of this situation, the wrinkling height Δ was introduced and related to the contact height between sheet and upper die, and the wrinkle of stamping parts was quantified and classified by three thresholds of 3%, 5% and 10% of sheet thickness. At the same time, the setting of stamping simulation parameters was optimized, and the wrinkling evaluation indicator and process for the flat area of product were proposed. Finally, through engineering verification, the wrinkling evaluation indicator and process were effective for the wrinkling evaluation of the flat area of product.

基金项目：

国家重点研发计划（2021YFB2501800）；湖南省自然科学基金面上项目（2020JJ4196）；柳州市科技计划重大专项（柳科攻2022ABB0101、2021CBA0101）

作者简介：申丹凤（1981-），女，硕士，高级工程师，E-mail：dandaner325@163.com

参考文献：

[1]徐涛涛，孔垂品，李俊杰. 汽车覆盖件冲压工艺分析系统[J]. 塑性工程学报, 2020, 27(5):74-82.

Xu T T, Kong C P, Li J J, et al. Process analysis system for stamping of automobile panel[J]. Journal of Plasticity Engineering, 2020, 27(5):74-82.

[2]聂昕，毛定山，王辉. 基于网格映射的车身覆盖件精细模面设计研究[J]. 湖南大学学报：自然科学版， 2016, 43(8)：23-39.

Nie X，Mao D S，Wang H. Research on an accurate design method of auto-panel stamping die based on mesh mapping algorithm[J]. Journal of Hunan University:Natural Sciences， 2016, 43(8)：23-39.

[3]陈泽中，李响，刘欢，等. 基于Dynaform的SUV汽车B柱热冲压成形仿真分析与工艺研究[J]. 塑性工程学报，2019, 26(4):113-119.

Chen Z H, Li X, Liu H, et al. Simulation analysis and process research of hot-stamped SUV B-pillar based on Dynaform[J]. Journal of Plasticity Engineering, 2019, 26 (4):113-119.

[4]唐妍，蒋松. 翼子板内板冲压工艺数值模拟及回弹补偿[J]. 锻压技术， 2021, 46(12)：105-111.

Tang Y，Jiang S. Numerical simulation and springback compensation on stamping process for fender inner plate[J]. Forging & Stamping Technology，2021, 46(12)：105-111.

[5]赵坤民，高岩，赵德望，等.汽车用大型复杂冲压件拉延回弹仿真[J].塑性工程学报，2021, 28(12):12-20.

Zhao K M，Gao Y，Zhao D W, et al. Drawing springback simulation of large complex stamping part for automobile[J]. Journal of Plasticity Engineering, 2021, 28(12):12-20.

[6]Rebelo N, Nagtegaal J C, Taylor L M，et al. Industrial application of implicit and explicit finite element methods to forming processes[J]. Numerical Methods for Simulation of Industrial Metal Forming Processes,1992,156:67-76.

[7]谢晖. 基于CAE的冲压工艺分析理论与关键技术研究[D].长沙：湖南大学，2003.

Xie H.Research on Theory and Key Technology of Stamping Process Analysis Based on CAE[D]. Changsha: Hunan University, 2003.

[8]王震，徐肖.汽车顶盖外板起皱问题研究和改进[J]. 模具制造, 2020, （12）:1-5.

Wang Z，Xu X.Wrinkling research and improvement for automobile roof outer panel[J]. Die & Mould Manufacture,2020,（12）:1-5.

[9]高双明. 两厢车型顶盖尾部起皱研究及优化方案[J]. 锻压技术，2021, 46(2):76-81.

Gao S M.Research on wrinkle for hatchback car roof rear and its optimization scheme[J]. Forging & Stamping Technology, 2021, 46(2):76-81.

[10]代丽，朱勇.汽车侧围外板表面缺陷分析及冲压工艺优化[J]. 锻压技术，2021,46(6):91-98.

Dai L, Zhu Y. Surface defect analysis and stamping process optimization on automobile side wall outer panel[J]. Forging & Stamping Technology, 2021, 46(6):91-98.

[11]韩龙帅，王刚，郑学斌，等. 基于Autoform的门内板冲压仿真分析[J]. 塑性工程学报， 2021, 28(4): 82-88.

Hang L S，Wang G, Zheng X B, et al. Simulation analysis of door inner panel stamping based on Autoform[J]. Journal of Plasticity Engineering, 2021, 28(4): 82-88.

[12]阎洁. 基于广义成形理论的汽车覆盖件起皱缺陷研究[D].大连：大连理工大学，2013.

Yan J. Study on Wrinkling in Auto Panels Based on Universal Formability Theory[D]. Dalian: Dalian University of Technology,2013.

[13]张健伟，崔博，吕金贺，等.一种冲压皱曲缺陷的仿真分析方法[J]. 材料科学与工艺, 2020, 28(2):52-59.

Zhang J W, Cui B, Lyu J H, et al. A simulation analysis method for wrinkle defect in stamping process[J]. Materials Science and Technology, 2020, 28(2):52-59.

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