薄壁球面构件普旋法兰起皱预测方法评价

doi:10.16183/j.cnki.jsjtu.2019.04.006

上海交通大学学报（自然版） ›› 2019, Vol. 53 ›› Issue (4): 431-437.doi: 10.16183/j.cnki.jsjtu.2019.04.006

薄壁球面构件普旋法兰起皱预测方法评价

杜陈阳，孔庆帅，赵亦希，于忠奇

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

出版日期:2019-04-28 发布日期:2019-04-28
通讯作者: 于忠奇，男，副教授，博士生导师，电话（Tel.）：021-34206785；E-mail：yuzhq@sjtu.edu.cn.
作者简介:杜陈阳(1995-)，男，硕士生，江苏省南通市人，主要研究方向为旋压理论及其工艺技术.
基金资助:
国家自然科学基金项目(51675333，51875352)，国家重点基础研究发展规划(973)项目(2014CB046601)

Evaluation of Flange Wrinkling Prediction Methods of Conventional Spinning for Thin-Walled Spherical Components

DU Chenyang,KONG Qingshuai,ZHAO Yixi,YU Zhongqi

Shanghai Key Lab of Digital Manufacturing for Thin-Walled Structures, Shanghai Jiao Tong University, Shanghai 200240, China

Online:2019-04-28 Published:2019-04-28

摘要/Abstract

摘要： 为了探究现有的起皱评价方法对薄壁球面构件普旋法兰起皱发生时刻预测的精确性，以 2024-O 铝合金球面薄壁构件第一道次普旋为研究对象，通过试验方法确定了2024-O铝合金旋压法兰起皱发生时刻，同时结合数值仿真手段，基于现有的起皱评价方法分别得出了2024-O铝合金旋压法兰起皱发生时刻的结果.研究结果表明：法兰几何波动法和基于塑性失稳的理论模型可以正确地预测法兰起皱发生时刻，前者预测误差达到125%，后者误差为77%；旋压力法可以预测法兰严重起皱时刻，但无法定量预测起皱发生时刻；弹性应变能振荡法对上述两种起皱问题均无法预测.

关键词: 薄壁球面构件, 铝合金, 旋压成形, 法兰起皱, 起皱预测

Abstract: In order to explore the accuracy of the existing wrinkle evaluation method for the prediction of the wrinkling of the thin-walled spherical members, the first-pass conventional spinning of the 2024-O aluminum alloy spherical thin-walled member is taken as the research object, and the test method is used to determine the occurrence of the 2024-O aluminum alloy spinning flange wrinkle, combined with the numerical simulation method, which obtains the results of the wrinkling occurrence of the 2024-O aluminum alloy spinning flange based on the existing wrinkle evaluation methods. The results show that the flange geometry wave method and the model based on plastic instability theory can correctly predict the moment when the flange wrinkles occur, and the former method’s prediction error is 12.5% and the latter is 7.7%. The spin pressure method can predict the moment of serious wrinkles, but cannot quantitatively predict the occurrence time of wrinkles. The elastic strain energy oscillation method cannot predict the above two wrinkling problems.

Key words: thin-walled spherical members, aluminum alloy, spinning forming, flange wrinkle, wrinkling prediction

中图分类号:

U 468

杜陈阳，孔庆帅，赵亦希，于忠奇. 薄壁球面构件普旋法兰起皱预测方法评价[J]. 上海交通大学学报（自然版）, 2019, 53(4): 431-437.

DU Chenyang,KONG Qingshuai,ZHAO Yixi,YU Zhongqi. Evaluation of Flange Wrinkling Prediction Methods of Conventional Spinning for Thin-Walled Spherical Components[J]. Journal of Shanghai Jiaotong University, 2019, 53(4): 431-437.

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薄壁球面构件普旋法兰起皱预测方法评价

Evaluation of Flange Wrinkling Prediction Methods of Conventional Spinning for Thin-Walled Spherical Components

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