锻压技术

基于数值模拟的铝合金板料自冲铆接成形

英文标题：Self-piercing riveting of aluminum alloy sheet based on numerical simulation

作者：周琦

单位：江阴职业技术学院

分类号：TG386

出版年,卷(期):页码：2019,44(7):47-51

摘要：

以汽车电池箱中的两层料厚为1.5 mm的5052-H32铝合金板料的自冲铆接作为研究对象，借助DEFORM-2D软件模拟了板料自冲铆接的变形过程，分析了铆接过程的载荷曲线及成形质量。利用铆接设备与模具对模拟结果进行试验验证，得到钉头高度、残余底厚以及底切量的试验值分别为0.103，0.458和0.389 mm，其与数值模拟值之间的相对误差分别为8.42%，5.05%和9.11%。基于数值模拟结果与理论经验公式，对铝板自冲铆接的力学性能进行预测，并且对铆接力进行性能测试，得到剪切力、剥离力以及十字拉伸力的试验值分别为3954，940.8和2102 N，其与理论预测值之间的相对误差分别为9.96%，5.11%和5.91%。

Taking self-piercing riveting for two layers of 5052-H32 aluminum alloy sheet with thickness of 1.5 mm in the automobile battery box as the research object, the deformation process of self-piercing riveting for sheet metal was simulated by DEFORM-2D, and the load curve of riveting process and forming quality were analyzed. Then, the simulation results were verified by riveting equipment and die. It is found that the experimental values of head height, residual bottom thickness and under-cut amount are 0.103, 0.458 and 0.389 mm, respectively, and the relative errors between experimental values and simulation values are 8.42%, 5.05% and 9.11%, respectively. Based on numerical simulation results and theoretical empirical formulas, the mechanical properties of aluminum sheet in the self-piercing riveting were predicted, and the riveting force was tested. It is obtained that the experimental values of shear force, peeling force and cross-tension force are 3954, 940.8 and 2102 N, respectively, and the relative errors between experimental values and theoretical predicted values are 9.96%, 5.11% and 5.91%, respectively.

基金项目：

江苏省高校哲学社会科学基金资助项目(2017 SJBFDY297)

周琦（1981-），男，硕士，讲师，E-mail：632992423@qq.com

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