Transactions of Materials and Heat Treatment

Title：Effect of rib structure on cross-section distortion in waveform stamping for micro-channel thin-walled flat tube

Authors： Zhu Yingxia Chen Wei Li Hui Guo Yuan

Unit： School of Mechanical Engineering Jiangsu University

KeyWords： micro-channel corrugated flat tube cross-section distortion rib structure stamping

ClassificationCode：TG386

year,vol(issue):pagenumber：2023,48(12):121-128

Abstract：

In order to optimize the structure and size of cross-section rib for micro-channel corrugated flat tube, the cross-section distortion rules under fifteen size-type models during the stamping process were studied by the finite element simulation, and the optimal structural style to resist the cross-section distortion was obtained. It is found that the average cross-section distortion rate of wave crest cross-section first increases and then decreases with the increasing of longitudinal rib height, and with the increasing of transverse rib width, the average cross-section distortion rate of wave crest cross-section and edge hole longitudinal cross-section decreases. When the longitudinal and transverse ribs are connected to the cross-section respectively, the cross-section distortion rate is minimum. Compared with the transverse rib, the cross-section distortion rate is more sensitive to the longitudinal rib. The smaller the number of longitudinal rib N1, the more conducive to reduce the cross-section distortion rate. When N1=0, the bigger the number of transverse rib N2, the more conducive to reduce the distortion rate. However, when N1≥1 and the value is fixed, the smaller N2, the more conducive to reduce the distortion rate. Among the fifteen size-style models, the corresponding cross-section distortion rate of model IV-1(h=0,N1=0, N2=2, transverse rib width of 0.6 mm) is the smallest.

Funds：

国家自然科学基金资助项目（51601070， 51875263）；广东省精密装备与制造技术重点实验室开放项目（PEMT202102）；江苏大学企业单位委托科技项目（HX20220700）

作者简介：朱英霞（1986-），女，博士，副教授 E-mail：xia166109@163.com 通信作者：陈炜（1965-），男，博士，教授 E-mail：chen_wei@mail.ujs.edu.cn

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