Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

您目前所在的位置:首页 - 期刊简介 - 详细页面

中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 22    No. 2    December 2012

[PDF Download]        

    

Residual stress field induced by shot peening based on random-shots for 7075 aluminum alloy
SHENG Xiang-fei1, XIA Qin-xiang1, CHENG Xiu-quan2, LIN Lie-shu2

1. School of Mechanical and Automotive Engineering, South China University of Technology,
Guangzhou 510640, China;
2. Department of Aircraft Maintenance Engineering, Guangzhou Civil Aviation College,
Guangzhou 510403, China

Abstract:High-strength 7075-T651 aluminum alloy was selected as the research object, and the random-shots FE model was developed; the influences of shots number and spatial location on residual stress field (RSF) were discussed; the influence of analysis step time (AST) on the stability of RSF was analyzed, and the influences of coverage rate and surface roughness of component on the distribution of RSF were investigated. The results indicate that the generated RSF is seriously affected by subsequent shots number and location; RSF tends to be stable when AST adds to 0.075 ms for 45 shots FE model, and the AST values of 15, 25, 65 and 85 shots FE model are 0.065, 0.0683, 0.0817 and 0.0883 ms respectively. For shot peening with different coverage rates, σsrs and σmcrs increase with the variation of shots number from 15 to 65, then decrease when shots number is 85, variation of Zm is not obvious, Z0 increases with the increment of shots number. For shot peening of component with different surface roughness Ra, variation of σsrs has no obvious regularity, and σmcrs, Zm and Z0 decrease with the increment of Ra.

 

Key words: 7075 aluminum alloy; shot peening; random-shots FE model; residual stress field

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

主管:中国科学技术协会 主办:中国有色金属学会 承办:中南大学
湘ICP备09001153号 版权所有:《中国有色金属学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市岳麓山中南大学内 邮编:410083
电 话:0731-88876765,88877197,88830410   传真:0731-88877197   电子邮箱:f_ysxb@163.com