超声激励对6061铝合金压缩性能的影响

中国机械工程 ›› 2011, Vol. 22 ›› Issue (13): 1612-1614,1633.

超声激励对6061铝合金压缩性能的影响

朱政强;张义福

南昌大学,南昌,330031

出版日期:2011-07-10 发布日期:2011-07-14
基金资助:
国家自然科学基金资助项目(50865007)；江西省教育厅2010年度重点科技项目(GJJ10013)
National Natural Science Foundation of China（No. 50865007）;
Jiangxi Provincial Science and Technology Key Program of Ministry of Education of China（No. GJJ10013）

Effects of Ultrasonic Action on Compression Performance of 6061 Aluminium Alloy

Zhu Zhengqiang;Zhang Yifu

Nanchang University, Nanchang, 330031

Online:2011-07-10 Published:2011-07-14
Supported by:

National Natural Science Foundation of China（No. 50865007）;
Jiangxi Provincial Science and Technology Key Program of Ministry of Education of China（No. GJJ10013）

摘要/Abstract

摘要：

金属成形过程中施加超声激励可显著减小金属成形力,提高金属的变形能力和加工质量。应力叠加、温度升高和接触界面摩擦条件的改变是成形力下降的主要因素。研究了下平板施加超声激励对6061铝合金压缩性能的影响。通过调整接触界面摩擦因数、超声振幅等主要加工参数,基于ABAQUS有限元软件的隐式积分算法模拟了单轴应力情况下施加超声振动对铝合金应力-应变关系的影响规律。结果表明,超声激励降低了工件和模具间的摩擦力并使得6061铝合金材料软化。

关键词:

超声激励, 6061铝合金, 压缩性能, 摩擦因数

Abstract:

Ultrasonic action in metal forming processing can reduce the forming load significantly; improve metal deformability and processing quality. The main factors effecting the reduction of forming load are the stress superposition, temperature increases and the change in the friction condition of contact interface. The effects of ultrasonic action on the compression performance of 6061 aluminum alloy were studied. By adjusting the main process parameters, such as coefficient of friction at the contact interface and ultrasonic amplitude etc. and based on ABAQUS implicit integration algorithm, the investigation on the influence law of stress-strain relationship under superimposing ultrasonic vibrations by different parameters was processed. The study indicates that ultrasonic action can reduce the interfacial friction and soften 6061 aluminum material during ultrasonic compression.

Key words: ultrasonic action, 6061 aluminum alloy, the compression performance;coefficient of friction

中图分类号:

TG386

朱政强, 张义福.

超声激励对6061铝合金压缩性能的影响

[J]. 中国机械工程, 2011, 22(13): 1612-1614,1633.

SHU Zheng-Jiang, ZHANG Xi-Fu.

Effects of Ultrasonic Action on Compression Performance of 6061 Aluminium Alloy

[J]. China Mechanical Engineering, 2011, 22(13): 1612-1614,1633.

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