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| 汽车 U 形隔热板冲压回弹控制 |
| Springback Control in the Forming of U-shaped Thermal Baffle |
| Received:July 10, 2014 Revised:September 01, 2014 |
| DOI：10. 3969 /j. issn. 1674-6457. 2014. 05. 022 |
| 中文关键词: U 形隔热板 回弹 DYNAFORM 数值模拟 |
| 英文关键词: U-shaped thermal baffle springback Dynaform numerical simulation |
| 基金项目: |
| Author Name | Affiliation | | WEN Yao | School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China | | FANG Li-wei | School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China | | WANG Cheng-guo | School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China | | SONG Qun-chao | School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China |
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| 中文摘要: |
| 目 的 解决隔热板成形常见问题以及预测回弹量的大小。 方法 以有限元分析软件 Dynaform为基础,研究毛坯尺寸、压边力、拉延筋布置以及摩擦因 数对隔热板成形性的影响。 结果 得出 了 隔热板的较佳成形工艺参数。 结论 通过修正模具和改善工艺来不断地改善回弹, 能准确 地预测 回弹量的大小。 优化后的回弹量分别 为 Δd= 0. 918 mm, Δα = 0. 340o, 回弹量得到了 有效的控制。 |
| 英文摘要: |
| Objective To solve the forming flaws of thermal baffles and to predict the amount of spingback. Methods The effects of blank size, blank holding force, draw bead layout and friction coefficient on the forming quality were studied through simulation based on the finite element analysis software Dynaform. Results The optimal processing parameters of thermal baffle were obtained. Conclusion The size of the springback could be precisely predicted and the effect of springback could be improved through constant mold compensation and process improvement. The springback after optimization was Δd= 0. 918 mm and Δα = 0. 340o, respectively, and the springback could be effectively controlled. |
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