锻压技术

5B02铝合金管材数控弯曲成形试验与数值模拟研究

英文标题：Experiment and numerical simulation research on numerical-controlled bending for 5B02 aluminum alloy tubes

关键词：5B02铝合金弯曲厚度有限元仿真

分类号：

出版年,卷(期):页码：2015,40(7):68-72

摘要：

弯管在飞机的液压、燃油、环控、供氧等系统有着广泛的应用。在弯管成形的过程中容易出现起皱、破裂、回弹等缺陷。针对以上问题，将直径为Φ30，Φ50和Φ70 mm的5B02铝合金管材在数控绕弯设备上进行绕弯成形。成形后利用超声波测厚仪测量了管材内外脊线壁厚厚度分布。基于PAM-STAMP建立绕弯过程有限元模型，对厚度分布进行了预测。通过试验测量结果与仿真结果的对比，发现有限元模型能够准确预测厚度分布。其中内侧脊线厚度分布最大相对误差为9.34％，外侧脊线厚度最大相对误差达到4.88％。此结果达到可接受的误差范围，可以用来指导实际生产。

Tubes have been widely applied in hydraulic, fuel, environmental control and oxygen supply system. Wrinkle, rupture and springback can frequently appear in the process of bending. Focusing on these problems, the 5B02 aluminum alloy tubes with diameters of Φ30, Φ50, Φ70 mm were bended on the numerical-controlled bending machine. Then, inner and outer crest thicknesses of the formed tubes were measured by the ultrasonic thickness gage. A numerical model of this bending process was established by PAM-STAMP software, the prediction on the thickness distribution of the formed tubes was carried out. By comparing the experiment results with the simulation results, the thickness distribution can be accurately predicted by the finite element model. The maximum relative error of the inner crest thickness distribution is no more than 9.34%, and the maximum relative error of the outer crest thickness distribution is no more than 4.88%. The results are within the acceptable error range and can be guidance in tube manufacture.

基金项目：

部门预先研究资助项目（513180102）

白雪山（1981-），男，学士，工程师

参考文献：

[1]王同海. 管材塑性加工技术[M].北京: 机械工业出版社, 1998.

Wang T H. Tube Plastic Forming Technology [M]. Beijing: China Machine Press, 1998.

[2\]李锋. 数控弯管过程运动仿真与工序规划技术 [D].西安: 西北工业大学, 2007.

Li F. Motion Simulation and Process Planning Technology of NC Tube Bending Process [D]. Xian: Northwestern Polytechnical University, 2007.

[3\]Yang H，Zhan M，Liu Y L，et al． Some advanced plastic processing technologies and their numerical simulation [J]. Journal of Materials Processing Technology，2004，151 (1/3): 63-69．

[4\]古涛，鄂大辛，高小伟，等.管材弯曲成形的有限元模拟与实验分析 [J].锻压装备与制造技术, 2006,41(1):66-68.

Gu T, E D X, Gao X W, et al. Finite element simulation and experimental analysis of the forming process of pipe-bending [J]. China Metal Forming Equipment & Manufacturing Technology, 2006, 41 (1): 66-68.

[5\]何文治. 航空制造工程手册[M]. 北京: 航空工业出版社, 1992.

He W Z．Aviation Manufacturing Engineering Handbook [M]．Beijing: Aviation Industry Press，1992．

[6\]Zhan M, Yang H, Jiang Z Q, et al. A study on a 3D FE simulation method of the NC bending process of thin-walled tube [J]. Journal of Materials Processing Technology, 2002, 129(1-3): 273-276.

[7\]AI-Qureshi H A, Russo A. Spring-back and residual stresses in bending of thin-walled aluminum tubes [J]. Materials & Design, 2002, 23: 217-222.

[8\]AI-Qureshi H A. Elastic-plastic analysis of tube bending [J]. International Journal of Machine Tools & Manufacture, 2003, 39:87-104.

[9\]Elchalakani M, zhao X L, Grzebieta R H. Plastic mechanism analysis of circular tubes under pure bending [J]. International Journal of Mechanic Science, 2009, 44: 117-143.

[10\]Wang X, Cao J. Wrinkling limit in tube bending [J]. Transaction of the ASME, 2008, 123: 430-435.

[11\]李慧.航空导管数控绕弯工艺快速准备系统的设计与实现 [D].北京：北京航空航天大学,2012.

Li H. Design and Implementation of Rapid Process Preparation System for NC Tube Bending [D]. Beijing: Beihang University, 2012.

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】