铝合金半球壳拉深-旋压复合成形工艺仿真

doi:10.16183/j.cnki.jsjtu.2022.165

上海交通大学学报 ›› 2023, Vol. 57 ›› Issue (10): 1329-1336.doi: 10.16183/j.cnki.jsjtu.2022.165

所属专题：《上海交通大学学报》2023年“机械与动力工程”专题

铝合金半球壳拉深-旋压复合成形工艺仿真

余小鹏¹, 王紫旻², 于忠奇¹(), 罗益民², 郁立¹

1.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
2.上海航天精密机械研究所, 上海 201600

收稿日期:2022-05-16 修回日期:2022-06-18 接受日期:2022-06-30 出版日期:2023-10-28 发布日期:2023-10-31
通讯作者: 于忠奇 E-mail:yuzhq@sjtu.edu.cn
作者简介:余小鹏(1998-),硕士生,从事铝合金薄壁构件旋压成形研究.
基金资助:
国家重点研发计划(2021YFB3400900);国家自然科学基金(52175346)

Numerical Simulation of Stamping-Spinning Hybrid Process for Aluminum Alloy Hemispherical Shells

YU Xiaopeng¹, WANG Zimin², YU Zhongqi¹(), LUO Yimin², YU Li¹

1. Shanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures, Shanghai Jiao Tong University, Shanghai 200240, China
2. Shanghai Spaceflight Precision Machinery Institute, Shanghai 201600, China

Received:2022-05-16 Revised:2022-06-18 Accepted:2022-06-30 Online:2023-10-28 Published:2023-10-31
Contact: YU Zhongqi E-mail:yuzhq@sjtu.edu.cn

摘要/Abstract

摘要：

针对航天铝合金半球壳传统拉深成形精度差的问题,引入旋压成形,提出铝合金半球壳拉深-旋压复合成形新思路,充分发挥拉深成形和旋压成形的技术优势,实现该构件厚度均匀性好和贴模精度高的成形加工.建立了铝合金半球壳复合成形过程有限元仿真模型,实现了铝合金半球壳复合成形过程仿真,分析了不同旋压占比复合成形件的壁厚分布和贴模度变化规律.结果表明,旋压占比为50%的复合成形铝合金半球壳壁厚均匀性改善明显;强力旋压可改变成形构件应力状态,显著提高复合成形构件尺寸精度.同时,进行了直径1 m级铝合金半球壳复合成形工艺试验验证,实现了构件厚度均匀性和贴模精度的提高.

关键词: 铝合金, 薄壁件, 旋压, 冲压, 成形精度

Abstract:

Aimed at the poor accuracy in traditional deep drawing of aerospace aluminum alloy hemispherical shells, and by introducing metal spinning, a stamping-spinning hybrid process strategy for aluminum alloy hemispherical shells is proposed, which can achieve the forming processing of the formed component with a high thickness uniformity and high shape accuracy. The finite element simulation model of the hybrid process of the aluminum alloy hemispherical shell is developed, which realizes the simulation. In addition, the variation law of the wall thickness and shape fitting of the hemispherical shells formed by the hybrid process are analyzed. The simulation results show that the uniformity of wall thickness of the hemispherical shells formed by 50% stamping + 50% spinning is significantly improved. The shape accuracy of the component can be obviously improved by changing the stress state of the forming component by power spinning. Meanwhile, the hybrid process is verified by using an aluminum alloy hemispherical shell with a diameter of 1 m in processing test, which improves the thickness uniformity and the shape accuracy of the hemispherical shell.

Key words: aluminum alloy, thin-walled part, spinning, stamping, forming accuracy

中图分类号:

TG306

余小鹏, 王紫旻, 于忠奇, 罗益民, 郁立. 铝合金半球壳拉深-旋压复合成形工艺仿真[J]. 上海交通大学学报, 2023, 57(10): 1329-1336.

YU Xiaopeng, WANG Zimin, YU Zhongqi, LUO Yimin, YU Li. Numerical Simulation of Stamping-Spinning Hybrid Process for Aluminum Alloy Hemispherical Shells[J]. Journal of Shanghai Jiao Tong University, 2023, 57(10): 1329-1336.

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铝合金半球壳拉深-旋压复合成形工艺仿真

Numerical Simulation of Stamping-Spinning Hybrid Process for Aluminum Alloy Hemispherical Shells

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