Analysis and suppression of flange wrinkling in AHSS chain-die forming channels with a curved axis
Analysis and suppression of flange wrinkling in AHSS chain-die forming channels with a curved axis
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曲线轴 AHSS 链模成形通道中凸缘起皱的分析与抑制
DOI：
10.1016/j.jmapro.2021.09.006
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发表时间：
2021-11
影响因子：
6.2
通讯作者：
Yinghong Peng
中科院分区：
文献类型：
--
作者：
Zhenye Liang;Yang Liu;Tianxia Zou;Dayong Li;Shichao Ding;Hua Xiao;Lei Shi;Yinghong Peng
链模成形可用于制造先进高强度钢(AHSS)槽钢部件。凸缘起皱是链模成形产品的典型缺陷之一。本文的目的是研究AHSS链模成形中凸缘起皱的原因，并提出一种可能的抑制方法。以曲轴帽槽制品为基准，阐述了链模成形中凸缘起皱的机理。在成形这种型材时，板材的纵向压缩应变在几何上是必要的，而由于约束边界条件的不足，必须通过塑性起皱来实现压缩。为了更好地理解刀具与板材之间的复杂相互作用，建立了有限元模型。在有限元模型中引入了由弹性小挠度板的平衡微分方程组计算出的初始缺陷来预测凸缘起皱的发生。为了消除起皱缺陷，提出了一种M型模具设计，旨在对板材提供额外的约束，并增加纵向和横向张力。针对M型模具设计，提出了三因素三水平试验设计方案。DOE结果表明，良性起皱往往对应较大的压缩应变，而M型模耳的宽度是抑制起皱的决定性因素。验证实验表明，该方法完全消除了塑料凸缘起皱现象。
Chain-die forming can be used to manufacture Advanced High Strength Steels (AHSS) channel components. Flange wrinkling is one of typical defects for chain-die formed products. The purpose of this paper is to investigate the cause of flange wrinkling in chain-die forming of AHSS and to propose a potential method to suppress it. A hat channel product with a curved axis is formed as a benchmark to illustrate the mechanism of flange wrinkling in chain-die forming. When forming such a profile, longitudinal compressive strain of the sheet metal is geometrically necessary, and the compression has to be achieved by plastic wrinkling due to the insufficient restricted boundary condition. Finite element models are established to better understand the complex interaction between the tools and plate. An initial imperfection calculated from the differential equilibrium equations for elastic plates with small deflections is implemented into the finite element model to predict occurrence of the flange wrinkling. In order to eliminate the wrinkling defect, an M-shaped die design is proposed, which intends to provide additional restriction to the sheet metal and increase longitudinal and transversal tension. A three-factor, three-level Design of Experiment (DOE) scheme for the M-shaped die design is conducted. The DOE results show that a benign wrinkling always corresponds to a larger compressive strain and the width of the ears for M-shaped dies is a decisive factor to suppress wrinkling. The verification experiments show that the plastic flange wrinkling is completely eliminated by employing the proposed method.
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影响因子：
7.3
作者：
J. Jiao;B. Rolfe;J. Mendiguren;M. Weiss
通讯作者：
J. Jiao;B. Rolfe;J. Mendiguren;M. Weiss
影响因子：
5.7
作者：
L. Nan;Yang He;Heng Li;Yan Siliang
通讯作者：
L. Nan;Yang He;Heng Li;Yan Siliang
影响因子：
5.7
作者：
B. Meng;M. Wan;X. D. Wu;Sheng Yuan;Xudong Xu;Jie Liu
通讯作者：
B. Meng;M. Wan;X. D. Wu;Sheng Yuan;Xudong Xu;Jie Liu
影响因子：
3.6
作者：
Jianguo Cao;M. Boyce
通讯作者：
Jianguo Cao;M. Boyce
DOI：
10.1177/0309324715590956
发表时间：
2015-07
期刊：
The Journal of Strain Analysis for Engineering Design
影响因子：
--
作者：
MM Kasaei;H. M. Naeini;G. Liaghat;Cma Silva;M.B. Silva;P. Martins
通讯作者：
MM Kasaei;H. M. Naeini;G. Liaghat;Cma Silva;M.B. Silva;P. Martins