| 铝钢电阻单元焊冲裁过程建模 |
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| 引用本文： | 何冠中,楼铭,马运五,李永兵.铝钢电阻单元焊冲裁过程建模[J].中国机械工程,2018,29(7):864. |
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| 作者姓名： | 何冠中 楼铭 马运五 李永兵 |
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| 作者单位： | 1.上海交通大学机械系统与振动国家重点实验室，上海，200240
2.上海交通大学上海市复杂薄板结构数字化制造重点实验室，上海，200240 |
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| 基金项目： | 国家自然科学基金-中国汽车产业创新发展联合基金资助重点项目（U1764251）
National Natural Science Foundation of China（No. U1764251） |
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| 摘 要： | 针对铝钢异种材料电阻单元焊工艺的铆钉冲裁过程，建立了冲裁过程二维轴对称有限元仿真模型，对冲裁过程中接头的几何形貌演化以及应力分布特征进行了分析，并利用该模型研究了铆钉头部形貌、铆钉腿部形貌、落料模凸台宽度、落料模凸台高度和铆钉与落料模间隙等五个几何特征对冲裁过程及冲裁接头质量的影响规律，提出了铆钉和模具几何形貌的优化建议。
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| 关 键 词： | 电阻单元焊 异种材料连接 冲裁过程 有限元模型 |
Modeling of Punching Processes of Resistance Element Welding of Aluminums and Steels |
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| HE Guanzhong,LOU Ming,MA Yunwu,LI Yongbing.Modeling of Punching Processes of Resistance Element Welding of Aluminums and Steels[J].China Mechanical Engineering,2018,29(7):864. |
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| Authors: | HE Guanzhong LOU Ming MA Yunwu LI Yongbing |
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| Affiliation: | 1.State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University,Shanghai， 200240
2.Shanghai Key Laboratory of Digital Manufacture for Thin-walled Structures,Shanghai Jiao Tong University, Shanghai ，200240 |
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| Abstract: | Addressing to the punching phase of resistance element welding (REW)processes, a two-dimensional axisymmetric finite-element model was developed, through which the geometrical evolutions and stress distributions of joints were studied. Moreover, the influence rules of five geometrical parameters on punching processes and joint qualities were analyzed, which consisted of rivet head shapes, rivet shank shapes, boss heights, boss widths and the gaps between rivets and dies. Some optimization suggestions of geometric shapes of the rivets and dies were also proposed. |
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| Keywords: | resistance element welding(REW) dissimilar material joining punching process finite-element model |
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