闭截面型材的拉弯成形性

周贤宾; 刁可山; 李晓星; 金朝海

闭截面型材的拉弯成形性

北京航空航天大学机械工程及自动化学院, 北京 100083

基金项目: 国家自然科学基金资助项目(10477001); 法国雷诺汽车公司资助项目

详细信息

作者简介:
周贤宾(1938-),男,江苏南通人,教授, xianbinzhou@vip.sina.com.

中图分类号: TG 386
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- 被引次数: 0
出版历程
- 收稿日期: 2006-05-30
- 网络出版日期: 2006-10-31

Stretch-bending formability of profile

School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要

摘要: 拉弯是型材的基本成形方法.截面畸变是型材拉弯成形中的常见缺陷,并对型材的回弹和变薄有交叉影响,型材拉弯成形性的分析评估远比板材成形复杂.提出了型材拉弯成形性的概念,建立了矩形截面型材拉弯成形性分析模型,基于有限元数值模拟研究了截面结构、相对高度和壁厚分布等几何参数对拉弯成形性的影响规律,从提高拉弯成形性出发提出了型材截面优化设计的原则.
- 型材 /
- 拉弯成形性 /
- 有限元数值模拟 /
- 截面畸变 /
- 回弹 /
- 飞机 /
- 汽车制造
Abstract: Stretch-wrap bending is the essential forming processing for profile. Cross section distortion is the common defect during the stretch-wrap bending of profile, and it brings cross-effect with thinning of thickness and springback. The stretch-wrap bending formability for profile is much more difficult to analyze and to evaluate than that for sheet forming. The concept of stretch-wrap bending formability for profile was presented and an analytic model for profile with rectangular section was established. The effect of the geometric parameters such as section configuration, relative height and wall-thickness distribution of profile on stretch-wrap bending formability was studied based on finit element method(FEM) numerical simulation. The principle for optimization design of cross section was proposed in order to improve the stretch-wrap bending formability of profile.
- profile /
- stretch-wrap bending formability /
- finit element method numerical simulation /
- cross section distortion /
- springback /
- aircraft /
- automobile manufacturing

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参考文献(1)

[1] 王柏龄．全铝车身的研究及发展[J]．汽车工业研究, 2000(6):31-33 Wang Boling. Research and development of aluminum car body [J]. Auto Industry Research,2000(6):31-33(in Chinese) [2] 刁可山,周贤宾,金朝海,等．铝合金型材拉弯成形研究进展[J]．塑性工程学报,2003,10(6):231-234 Diao Keshan, Zhou Xianbin, Jin Chaohai,et al. The study on stretch-bending process for aluminium extrusions[J]. Journal of Plasticity Engineering, 2003,10(6):231-234(in Chinese) [3] Clausen A H, Hopperstad O S, Langseth M. Stretch bending of aluminum extrusions:effect of geometry and alloy[J]. Journal of Engineering Mechanic, 1999,125(4):392-400 [4] Clausen A H, Hopperstad O S, Langseth M. Stretch bending of aluminum extrusions:effect of tensile sequence[J]. Journal of Engineering Mechanics,1999, 125(5):521-529 [5] Clausen A H, Hopperstad O S, Langseth M. Sensitivity of model parameters in stretch bending of aluminium extrusions[J]. International Journal of Mechanical Sciences, 2001, 43(2):427-453 [6] 刁可山,周贤宾,金朝海,等．复杂截面型材力控制拉弯成形数值模拟分析[J]．材料科学与工艺,2004,12(4):413-416 Diao Keshan, Zhou Xianbin, Jin Chaohai, et al. A numerical study on the force-controlled stretch bending of aluminum extrusion with complex cross section[J]．Material Science and Technology, 2004,12(4):413-416(in Chinese) [7] 刁可山,周贤宾,李晓星,等．矩形截面型材拉弯成形[J]．北京航空航天大学学报,2005,31(2):134-137 Diao Keshan, Zhou Xianbin, Li Xiaoxing, et al．Stretch bending of aluminum extrusion [J]．Journal of Beijing University of Aeronautics and Astronautics,2005,31(2):134-137(in Chinese) [8] 王炎山．锻压工艺标准应用手册[M]．北京:机械工业出版社,1998:444-505 Wang Yanshan． Application standard handbook of forging & stamping process [M].Beijing:China Machine Press, 1998:444-505(in Chinese) [9] 周贤宾,周敏．方板对角拉伸试验与板材的综合成形性[J]．锻压技术,1985(4):52-56 Zhou Xianbin,Zhou Min. Yoshida backling test and overall formability of sheet metal[J]．Forging & Stamping Technology,1985(4):52-56(in Chinese) [10] 梁炳文．板金成形性能[M]．北京:机械工业出版社,1999 Liang Bingwen．Sheet-metal formability [M]．Beijing:China Machine Press, 1999(in Chinese)

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