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

ZHONGGUO YOUSEJINSHU XUEBAO

第14卷    第4期    总第61期    2004年4月

[PDF全文下载]    [Flash在线阅读]    

    

文章编号:1004-0609(2004)04-0639-07
7075铝合金厚板预拉伸模拟分析及其在淬火残余应力消除中的应用
柯映林, 董辉跃

(浙江大学机械与能源工程学院, 杭州 310027)

摘 要: 运用有限元软件ABAQUS, 对7075铝合金板材淬火过程进行了模拟。 比例件的加工变形表明淬火模拟所得的残余应力是可信的。在获得淬火残余应力的基础上, 模拟了不同预拉伸量对毛坯的淬火残余应力的消除。 结果表明: 拉伸量为3%时, 毛坯产生2.1%~2.6%的永久变形, 残余应力消除量约为86%, 完全符合航空铝合金厚板生产工艺的规定。

 

关键词: 预拉伸; 7075铝合金;淬火; 残余应力; 变形

Pre-stretching process and its application in reducing residual stressof quenched 7075 aluminum alloy thick-plates
KE Ying-lin, DONG Hui-yue

College of Mechanical and Energy Engineering, 
Zhejiang University, Hangzhou 310027, China

Abstract: A quenching process of 7075 aluminum plates was simulated by ABAQUS—a powerful FEA program. To verify the simulation result of quenching process, a reduced-scale part was machined and tested. The result between FEA and experiment was discovered accordantly. With FEA based quenched stress, different stress distributions were obtained under different conditions of pre-stretching. The research shows that the blank is pre-stretched about 3%, the magnitude of plastic strain is between 2.1%-2.6%, and the quenched-stress is removed about 86%. All these quantities agree well with the manufacturing technics of aviation aluminum alloy thick-plate.

 

Key words: pre-stretching; 7075 aluminum alloy; quenching; residual stress; distortion

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