Numerical prediction of Joule heating effect in electric hot incremental sheet forming

被引：0

作者：

Zhengfang Li

Songlin He

Yuhang Zhang

Zhiguo An

Zhengyuan Gao

Shihong Lu

机构：

[1] Kunming University,School of Mechanical and Electrical Engineering

[2] Chongqing Jiaotong University,School of Mechanotronics and Vehicle Engineering

[3] Nanjing University of Aeronautics and Astronautics,College of Mechanical & Electrical Engineering

来源：

The International Journal of Advanced Manufacturing Technology | 2022年 / 121卷

关键词：

Incremental sheet forming; Electric hot forming; Electric-thermal-force coupling; Joule heating effect; Numerical simulation;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Since the deformation region involves the interaction of electric-thermal-force coupling in electric hot incremental sheet forming, the numerical simulation of the forming process is unusually difficult. Currently, the thermal-force coupling method is adopted to simulate approximately the whole forming process, and the Joule heating effect is often ignored. Therefore, the numerical simulation of the Joule heating effect is especially significant for the prediction accuracy of forming process. In this paper, a novel numerical simulation method considering electric-thermal-force parameters was proposed to update the thermal-force condition of the forming region instantly. Meanwhile, the model of contact thermal conductance was established, combining geometrical and electric-thermal parameters. Then a high-precision finite element model was obtained to predict the Joule heating effect of the forming region. In addition to this, the impact of thermal superposition on forming temperature was further analyzed, and a modified model of contact thermal conductance was established in electric hot incremental sheet forming.

引用

页码：8221 / 8230

页数：9

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