铝合金带筋构件超声辅助旋压仿真研究

doi:10.16183/j.cnki.jsjtu.2019.263

上海交通大学学报 ›› 2021, Vol. 55 ›› Issue (4): 394-402.doi: 10.16183/j.cnki.jsjtu.2019.263

所属专题：《上海交通大学学报》2021年“金属学与金属工艺”专题；《上海交通大学学报》2021年12期专题汇总专辑

铝合金带筋构件超声辅助旋压仿真研究

李晓凯, 赵亦希(), 于忠奇, 朱宝行, 崔峻辉

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

收稿日期:2019-09-16 出版日期:2021-04-28 发布日期:2021-04-30
通讯作者: 赵亦希 E-mail:yxzhao@sjtu.edu.cn
作者简介:李晓凯(1994-),男,山东省潍坊市人,硕士生,研究方向为带筋构件超声振动辅助旋压
基金资助:
国家自然科学基金资助项目(51875352);国家自然科学基金资助项目(51675333)

Simulation Study of Aluminum Alloy Ribbed Member Spinning with Ultrasonic Vibration

LI Xiaokai, ZHAO Yixi(), YU Zhongqi, ZHU Baohang, CUI Junhui

Shanghai Key Laboratory of Digital Manufacturing for Complex Thin-Walled Structure,Shanghai Jiao Tong University, Shanghai 200240, China

Received:2019-09-16 Online:2021-04-28 Published:2021-04-30
Contact: ZHAO Yixi E-mail:yxzhao@sjtu.edu.cn

摘要/Abstract

摘要：

流动旋压工艺有利于实现带筋构件整体成形,但是所能成形的内筋高度受限.将超声辅助方法引入流动旋压工艺,可以提高内筋高度.开展了超声辅助单拉和压缩试验,建立了考虑声软化效应的2219-O铝合金硬化方程,并分析超声加载后的减摩擦效应,基于Abaqus软件平台建立了超声辅助铝合金带筋构件旋压仿真模型.仿真结果表明:超声振动辅助可以降低材料的变形抗力,改善筋部不同方向的材料流动,引导内筋附近材料流入筋槽,从而提高内筋高度,当振幅达到12μm时,内筋高度可以提高1/3.

关键词: 超声振动, 带筋构件, 声软化效应, 减摩擦效应, 有限元仿真

Abstract:

Flow spinning process is beneficial to realizing the integral forming of the ribbed members, but the height of the inner rib that can be formed is limited. Therefore, an ultrasonic assisted method was introduced into the flow spinning process to increase the height of the inner rib. Uniaxial tensile and compression tests with ultrasonic vibration were conducted to establish the hardening equation of the 2219-O aluminum alloy considering the acoustic softening effect. The friction reduction effect after ultrasonic loading was analyzed. A simulation model of aluminum alloy ribbed member spinning with ultrasonic vibration was established using the Abaqus software. The simulation results show that the ultrasonic vibration can reduce the deformation resistance of the material, improve the material flow of the ribs in different directions, guide the material flowing into the rib grooves, and thereby improve the filling height of the ribs. When the amplitude reaches 12μm, the rib height can be increased by 1/3.

Key words: ultrasonic vibration, ribbed members, acoustic softening effect, friction reduction effect, finite element simulation

中图分类号:

TG306

李晓凯, 赵亦希, 于忠奇, 朱宝行, 崔峻辉. 铝合金带筋构件超声辅助旋压仿真研究[J]. 上海交通大学学报, 2021, 55(4): 394-402.

LI Xiaokai, ZHAO Yixi, YU Zhongqi, ZHU Baohang, CUI Junhui. Simulation Study of Aluminum Alloy Ribbed Member Spinning with Ultrasonic Vibration[J]. Journal of Shanghai Jiao Tong University, 2021, 55(4): 394-402.

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ζ/μm	σ_s/MPa	σ_s降低/%	σ_b/MPa	δ/%
0	87.32	-	180.67	33.30
3	53.41	38.8	146.61	26.89
6	42.20	51.7	133.89	25.22
9	28.32	67.6	130.30	26.48

ζ/μm	β	C	m
3	0.4215	0.4086	0.77
6	0.2816	0.2639	0.66
9	0.1983	0.1887	0.87

部件几何尺寸					仿真工艺参数
筒形件内径/mm	壁厚/mm	筋槽平均宽度/mm	旋轮圆角半径/mm		下压量/mm	芯轴转速/(r·s^-1)	进给速率/(mm·s^-1)
150	6	3.75	5		1	4	20

铝合金带筋构件超声辅助旋压仿真研究

Simulation Study of Aluminum Alloy Ribbed Member Spinning with Ultrasonic Vibration

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