锻压技术

5052铝合金薄型封板冲压缺陷仿真分析

英文标题：Simulation analysis on stamping defects for 5052 aluminum alloy thin sealing plate

作者：吕志敏江豪

单位：1.濮阳职业技术学院机电与汽车工程学院 2.郑州轻工业大学电气信息工程学院

分类号：TG386

出版年,卷(期):页码：2022,47(9):99-104

摘要：

针对某5052铝合金薄型封板开裂严重、报废率高的问题，基于计算机模拟技术，对其冲压成形过程进行了数值仿真。首先，通过单向拉伸试验获得了5052铝合金的力学性能参数及应力-应变曲线，并在Deform软件中建立了冲压材料模型。其次，通过建立冲压仿真模型，结合田口试验设计，研究了冲压速度、摩擦因数、压边力以及入模圆角半径等冲压参数对薄型封板成形质量的影响，并采用线性加权法建立了关于最大减薄率与最大增厚率的评价函数模型，利用望小特性模型对冲压参数进行了寻优。优化结果表明，封板的最大减薄率及最大增厚率得到了明显改善，降低了开裂和起皱的风险，并通过冲压试验进行了验证，原工艺下出现的开裂缺陷得到消除，封板质量达到设计需求。

For the serious cracking and high scrap rate of a 5052 aluminum alloy thin sealing plate, based on computer simulation technology, its stamping process was simulated numerically. Firstly, the mechanical property parameters and stress-strain curves of 5052 aluminum alloy were obtained by unidirectional tensile test, and the stamping material model was established by software Deform. Secondly, through the establishment of stamping simulation model, and combined with taguchi test design, the influences of stamping parameters such as stamping speed, friction coeffient, blank holder force and die fillet radius on the forming quality of thin sealing plate were studied, the evaluation function model of the maximum thinning rate and the maximum thickening rate was established by the linear weighted method, and the stamping parameters were optimized by small feature model. The optimization results show that the maximum thinning rate and the maximum thickening rate of sealing plate are improved obviously, the risk of cracking and wrinkling is reduced.And the verification was conducted by the stamping test. The cracking defects in the original process are eliminated, and the quality of sealing plate meets the design requirements.

基金项目：

河南省2020年重点研发与推广专项（科技公关）项目(212102210081)

吕志敏（1978-），男，硕士，讲师 E-mail：lvzm1978@163.com

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