上海交通大学学报

上海交通大学学报 >

2022 , Vol. 56 >Issue 1: 62 - 69

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2020.326

交叉内筋薄壁筒体错距旋压成形数值仿真

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  • 上海交通大学 上海市复杂薄板结构数字化制造重点实验室, 上海 200240
周 宇(1995-),男,湖北省荆门市人,硕士生,从事铝合金带筋构件旋压成形研究.

收稿日期: 2020-10-11

  网络出版日期: 2022-01-21

基金资助

国家自然科学基金重大项目(51790175);国家自然科学基金面上项目(51675333)

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Numerical Simulation of Stagger Spinning of Cylindrical Part with Cross Inner Ribs

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  • Shanghai Key Laboratory of Digital Manufacture for Complex Thin-Walled Structures, Shanghai Jiao Tong University, Shanghai 200240, China

Received date: 2020-10-11

  Online published: 2022-01-21

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摘要

流动旋压是成形薄壁筒体的优势技术,但对于带筋筒体,其所能成形的内筋高度受限.针对该类构件旋压成形内筋填充困难的问题,基于有限元软件Abaqus建立了交叉内筋薄壁筒体错距旋压成形的数值仿真模型,分析了旋轮数量对铝合金2219-O带筋筒体内筋填充的影响规律,进行了正交内筋薄壁筒体的工艺试验.结果表明:在错距旋压工艺中,增加旋轮数量会减小铝合金带筋筒体的内径扩径量,并抑制材料的轴向流动,使内筋的几何精度更高.仿真与试验结果相比,其内筋填充饱满度的平均误差为11.3%,所建立的错距旋压仿真模型具有良好的可靠性.

关键词： 错距旋压; 铝合金; 带筋筒体; 几何精度; 数值仿真

本文引用格式

周宇, 赵勇, 于忠奇, 赵亦希 . 交叉内筋薄壁筒体错距旋压成形数值仿真[J]. 上海交通大学学报, 2022 , 56(1) : 62 -69 . DOI: 10.16183/j.cnki.jsjtu.2020.326

Abstract

Flow spinning is an advantageous technology in forming thin-walled cylindrical parts, but for cylindrical parts with inner ribs,the height of the inner ribs that can be formed is limited. Aimed at the problem that the inner ribs are difficult to fill in such components, a numerical simulation model of staggered spinning of thin-walled cylindrical parts with cross inner ribs is established based on Abaqus, and the influence of the number of rollers on the filling of inner ribs is analyzed. The process test of the cylinder part with orthogonal inner ribs is conducted. The results show that in the staggered spinning process, increasing the number of rollers will reduce the diameter expansion of the aluminum alloy cylindrical part with inner ribs, and inhibit the axial flow of materials, leading to a higher geometric accuracy of the inner ribs. The comparison of the simulation results and the test results shows that the average error of the inner rib filling fullness of simulation result is 11.3%, and the simulation model has a good reliability.

Key words： staggered spinning; aluminum alloy; cylindrical parts with inner ribs; geometric accuracy; numerical simulation

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