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基于非关联流动规律的Gotoh屈服准则的参数确定方法

王海波 周伟 阎昱 李强 何东

王海波, 周伟, 阎昱, 李强, 何东. 基于非关联流动规律的Gotoh屈服准则的参数确定方法[J]. 力学学报, 2018, 50(5): 1051-1062. doi: 10.6052/0459-1879-18-194
引用本文: 王海波, 周伟, 阎昱, 李强, 何东. 基于非关联流动规律的Gotoh屈服准则的参数确定方法[J]. 力学学报, 2018, 50(5): 1051-1062. doi: 10.6052/0459-1879-18-194
Wang Haibo, Zhou Wei, Yan Yu, Li Qiang, He Dong. PARAMETER DETERMINATION METHOD OF GOTOH YIELD CRITERION BASED ON NON-ASSOCIATED FLOW RULE[J]. Chinese Journal of Theoretical and Applied Mechanics, 2018, 50(5): 1051-1062. doi: 10.6052/0459-1879-18-194
Citation: Wang Haibo, Zhou Wei, Yan Yu, Li Qiang, He Dong. PARAMETER DETERMINATION METHOD OF GOTOH YIELD CRITERION BASED ON NON-ASSOCIATED FLOW RULE[J]. Chinese Journal of Theoretical and Applied Mechanics, 2018, 50(5): 1051-1062. doi: 10.6052/0459-1879-18-194

基于非关联流动规律的Gotoh屈服准则的参数确定方法

doi: 10.6052/0459-1879-18-194
基金项目: 1) 国家自然科学基金项目(51475003), 北京市教委青年拔尖人才培育计划项目, 北方工业大学毓优人才、毓杰人才支持计划项目(718XN154-007)资助.
详细信息
    作者简介:

    2) 王海波, 副教授, 主要研究方向: 塑性成形理论、工艺与数值模拟. E-mail: wanghaibo@ncut.edu.cn

    通讯作者:

    王海波

  • 中图分类号: TG301;

PARAMETER DETERMINATION METHOD OF GOTOH YIELD CRITERION BASED ON NON-ASSOCIATED FLOW RULE

  • 摘要: 屈服准则对板料成形过程的理论解析、工艺优化和有限元模拟有着重要的影响. 通过提高屈服准则的各向异性表征能力, 可以确保成形过程的可靠性及实际预测的准确性. 本文基于非关联流动法则, 给出了Gotoh屈服准则一套全新的参数求解方法. 在结合常用屈服准则并考虑流动规律的基础上, 分别以5754O铝合金、DP980先进高强钢和SAPH440结构钢作为研究对象, 进行了不同加载路径下各向异性变形行为的预测. 根据Gotoh屈服准则推导的屈服函数、塑性势函数以及基于关联流动的理论函数计算出屈服应力和各向异性指数$r$值随加载角度的分布趋势, 进而针对平面应力状态的屈服轨迹展开分析, 验证了不同屈服准则和流动规律对各向异性屈服行为的预测精度. 理论与实验数据对比结果表明: 不同屈服准则针对同种板料在流动规律一致的情形下其表征各向异性的能力有显著差异; 相同屈服准则基于不同流动规律其表征能力也具有明显差别. 基于非关联流动的屈服准则能极大地提高精度, 各向异性表征能力显著加强. 相关结果能够为各向异性屈服准则在塑性成形领域的实际应用方案提供重要参考.

     

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出版历程
  • 收稿日期:  2018-06-08
  • 刊出日期:  2018-09-18

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