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基于ABAQUS有限元模拟铝合金小弯曲半径的内压推弯成形 被引量:6

Finite Element Simulation of Aluminum Alloy Internal Pressure Bending Forming with Small Bending Radius Based on ABAQUS
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摘要 内侧起皱、外侧壁厚减薄及横截面畸变等是管材弯曲成形过程中主要缺陷,对于小半径弯曲成形的管材尤为严重。采用有限元技术对φ32 mm×1 mm的LF2M铝合金管材在1倍相对弯曲半径时的推弯成形过程进行了数值模拟,得到了内压力、管坯与凹模之间摩擦系数等工艺参数对管件成形质量影响规律。结果表明,合理增加管坯与凹模之间摩擦系数能降低壁厚减薄,同时内压大小对控制截面畸变有重要影响,在摩擦系数0.06和15MPa内压成形工艺参数时能得到较好成形效果。 Inner wrinkling, outer wall thinning and distortion of cross section are main defects in tube bending process,and the tube bending forming with small bending radius is very serious. The tube bending process of φ32 mm×1 mm LF2 M aluminum alloy tube with 1 time relative bending radius was numerically simulated. The affecting rule of the internal pressure and coefficient of friction between the tube and die on the quality of tube forming was acquired. The results show that reasonable increasing the friction coefficient between the tube and die can reduce the wall thickness reduction. At the same time,the internal pressure has an important effect on the control of cross section distortion,and good forming result can be gotten at the friction coefficient of 0.06 and the internal pressure of 15 MPa.
作者 牟菊 门向南 陈清根 徐雪峰 王高潮 MOU Ju, MEN Xiangnan, CHEN Qinggen, XU Xuefeng, Wang Gaochao (1. Chengdu Aircraft Industry (Group) Corporation Ltd., Chengdu, 610092 China;2.School of Aviation Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, China)
出处 《热加工工艺》 CSCD 北大核心 2015年第13期109-112,共4页 Hot Working Technology
基金 中航工业产学研资助项目(BA201306321) 国家自然科学基金资助项目(51405219)
关键词 内侧起皱 外侧减薄 横截面畸变 小弯曲半径 数值模拟 inner wrinkling out wall thinning cross section distortion small bending radius numerical simulation
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