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基于修正M-K模型的铝合金板材成形极限图预测

杨希英 郎利辉 刘康宁 蔡高参 郭禅

杨希英, 郎利辉, 刘康宁, 等 . 基于修正M-K模型的铝合金板材成形极限图预测[J]. 北京航空航天大学学报, 2015, 41(4): 675-679. doi: 10.13700/j.bh.1001-5965.2014.0310
引用本文: 杨希英, 郎利辉, 刘康宁, 等 . 基于修正M-K模型的铝合金板材成形极限图预测[J]. 北京航空航天大学学报, 2015, 41(4): 675-679. doi: 10.13700/j.bh.1001-5965.2014.0310
YANG Xiying, LANG Lihui, LIU Kangning, et al. Prediction of forming limit diagram of AA7075-O aluminum alloy sheet based on modified M-K model[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(4): 675-679. doi: 10.13700/j.bh.1001-5965.2014.0310(in Chinese)
Citation: YANG Xiying, LANG Lihui, LIU Kangning, et al. Prediction of forming limit diagram of AA7075-O aluminum alloy sheet based on modified M-K model[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(4): 675-679. doi: 10.13700/j.bh.1001-5965.2014.0310(in Chinese)

基于修正M-K模型的铝合金板材成形极限图预测

doi: 10.13700/j.bh.1001-5965.2014.0310
基金项目: 国家自然科学基金资助项目(50975014); 中俄国际合作与交流NSFC-RFBR基金资助项目(51010166)
详细信息
    作者简介:

    杨希英(1985—),男,河北衡水人,博士生,yxiyingbuaa@163.com

    通讯作者:

    郎利辉(1970—),男,河南新乡人,教授,lang@buaa.edu.cn,主要研究方向为先进成形技术及装备.

  • 中图分类号: V260.1;TG394

Prediction of forming limit diagram of AA7075-O aluminum alloy sheet based on modified M-K model

  • 摘要: 为准确预测AA7075-O铝合金板材的成形极限,将韧性断裂准则和传统M-K模型相结合,提出一种基于韧性断裂准则的修正M-K模型.利用单向拉伸模拟和试验相结合的方法,提取危险单元的应力应变历史并代入C-L韧性断裂准则中,得到材料常数.基于单向拉伸试验所得成形极限点,通过MATLAB编程得到修正M-K模型的初始厚度不均度.在常温下,以单向拉伸、宽板弯曲、液压胀形试验获得AA7075-O铝合金板材的成形极限曲线,与修正M-K模型和传统M-K模型计算得到的理论成形极限曲线进行对比,验证了修正M-K模型的可行性和准确性.

     

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出版历程
  • 收稿日期:  2014-05-29
  • 修回日期:  2014-07-25
  • 网络出版日期:  2015-04-20

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