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45钢单轴应变循环软化行为的本构模型

罗艳 杨显杰 高庆

罗艳, 杨显杰, 高庆. 45钢单轴应变循环软化行为的本构模型[J]. 西南交通大学学报, 2007, 20(1): 99-103.
引用本文: 罗艳, 杨显杰, 高庆. 45钢单轴应变循环软化行为的本构模型[J]. 西南交通大学学报, 2007, 20(1): 99-103.
LUO Yan, YANG Xianjie, GAO Qing. Constitutive Model for Cyclic Softening Behavior of 45 Steel under Uniaxial Cyclic Straining[J]. Journal of Southwest Jiaotong University, 2007, 20(1): 99-103.
Citation: LUO Yan, YANG Xianjie, GAO Qing. Constitutive Model for Cyclic Softening Behavior of 45 Steel under Uniaxial Cyclic Straining[J]. Journal of Southwest Jiaotong University, 2007, 20(1): 99-103.

45钢单轴应变循环软化行为的本构模型

基金项目: 

国家自然科学基金(1037086)

教育部博士点基金(20040613002)资助项目

详细信息
    作者简介:

    罗艳(1980- ),女,博士研究生,研究方向为村料的断裂、损伤及本构关系,电话:13982271062,E-mail:lylfjm0988@sina.com

Constitutive Model for Cyclic Softening Behavior of 45 Steel under Uniaxial Cyclic Straining

  • 摘要: 为了更好地描述材料的循环软化行为,基于调质处理的45钢在对称与非对称应变循环加载下的变形特征,建立了其循环塑性本构模型.模型中考虑了材料在初始1/4循环加载时达到上屈服限后的应变软化现象.此外,用屈服面半径和背应力演化方程对后继循环软化行为进行了模拟.结果表明,在低周疲劳过程中,无论是循环软化滞回圈形状,还是循环应力幅值随循环周次的变化,理论预测与实验结果均吻合得很好.

     

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出版历程
  • 收稿日期:  2005-12-10
  • 刊出日期:  2007-02-25

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