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球形压头压入中摩擦对材料参数识别的影响

钱秀清 张建宇 费斌军

钱秀清, 张建宇, 费斌军等 . 球形压头压入中摩擦对材料参数识别的影响[J]. 北京航空航天大学学报, 2008, 34(04): 426-430.
引用本文: 钱秀清, 张建宇, 费斌军等 . 球形压头压入中摩擦对材料参数识别的影响[J]. 北京航空航天大学学报, 2008, 34(04): 426-430.
Qian Xiuqing, Zhang Jianyu, Fei Binjunet al. Effect of friction on identification of materials properties from spherical indentation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2008, 34(04): 426-430. (in Chinese)
Citation: Qian Xiuqing, Zhang Jianyu, Fei Binjunet al. Effect of friction on identification of materials properties from spherical indentation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2008, 34(04): 426-430. (in Chinese)

球形压头压入中摩擦对材料参数识别的影响

详细信息
    作者简介:

    钱秀清(1971-),女,山东青州人,博士后,qianxq@buaa.edu.cn.

  • 中图分类号: O 343.3

Effect of friction on identification of materials properties from spherical indentation

  • 摘要: 利用量纲分析原理和有限元方法,研究了球形压头压入中摩擦对于幂强化材料塑性材料参数识别的影响.通过定义一种基于能量的表征应变,根据识别的两个压入深度的表征应变和表征应力,得到材料的塑性特性;最后研究了摩擦对压入响应、表征应力及材料参数提取的影响.研究结果表明,摩擦对压入的影响与材料的应变硬化指数、弹性模量与屈服极限的比值及弹性功与总功的比值密切相关,弹性功与总功的比值越大,摩擦的影响越小;摩擦对材料参数提取的影响不可忽略,当摩擦系数未知时,对于压入过程中弹性功与总功的比值较大的材料,近似取摩擦系数为0.15,能得到较合理的材料参数识别的结果.

     

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出版历程
  • 收稿日期:  2007-04-03
  • 网络出版日期:  2008-04-30

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