基于CFD模型的搅拌摩擦焊接搅拌头受力分析

吴奇; 张昭; 张洪武

doi:10.13433/j.cnki.1003-8728.2015.1229

基于CFD模型的搅拌摩擦焊接搅拌头受力分析

doi: 10.13433/j.cnki.1003-8728.2015.1229

吴奇^1,2,
张昭^1,2, ,,
张洪武^1,2

1.
大连理工大学工程力学系, 大连 116024;
2.
大连理工大学工业装备结构分析国家重点实验室, 大连 116024

基金项目:

国家自然科学基金项目(11172057)、国家重点基础研究发展(973)计划(2011CB013401)、中央高校基本科研业务费专项资金及新世纪优秀人才支持计划项目资助

详细信息

作者简介:
吴奇(1990-),硕士研究生,研究方向为计算工艺力学,qiwu@mail.dlut.edu.cn

通讯作者:
张昭(联系人),教授,博士,zhangz@dlut.edu.cn

计量
- 文章访问数: 163
- HTML全文浏览量: 15
- PDF下载量: 9
- 被引次数: 0
出版历程
- 收稿日期: 2014-03-21
- 刊出日期: 2015-12-05

Force Analysis of Stirring Head in Friction Stir Welding Based on CFD Model

Wu Qi^1,2,
Zhang Zhao^{1,2
, ,},
Zhang Hongwu^1,2

1.
Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, China;
2.
State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China

摘要

摘要: 搅拌头作为搅拌摩擦焊接的核心部件,其工作状态与使用寿命,对焊接过程起着决定性作用,而其受力与应力值,将直接影响搅拌头的磨损和疲劳分析。建立了AA6061-T6搅拌摩擦焊接计算流体力学模型,对搅拌头附近压力场进行分析,计算搅拌头横向受力,包括轴肩表面阻力,搅拌针上压力和搅拌针底部阻力。基于得到的搅拌针上载荷分布,进一步计算出多种转速工况下搅拌针根部危险截面疲劳应力变化规律。
- 搅拌摩擦焊 /
- 计算流体模型 /
- 搅拌头 /
- 压力 /
- 疲劳
Abstract: As the key component of FSW machine, the fatigue damage and the wear behavior of the stirring head directly affect the welding process. A computational fluid dynamics (CFD) model for friction stir welded AA6061-T6 was developed to analyze the pressure distribution around the stirring head. The Results indicate that the transverse force consists of the frictional force from the shoulder, pressure force from the pin and the frictional force from the pin tip. Based on the calculated loads on the pin, the fatigue stress variations at the root of the pin were further studied in different rotating speeds.
- angular velocity /
- boundary conditions /
- calculations /
- computational fluid dynamics /
- computer software

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参考文献(16)

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