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一种基于耗散能计算的高周疲劳参数预测方法

李源 韩旭 刘杰 姜潮

李源, 韩旭, 刘杰, 姜潮. 一种基于耗散能计算的高周疲劳参数预测方法[J]. 力学学报, 2013, 45(3): 367-374. doi: 10.6052/0459-1879-12-300
引用本文: 李源, 韩旭, 刘杰, 姜潮. 一种基于耗散能计算的高周疲劳参数预测方法[J]. 力学学报, 2013, 45(3): 367-374. doi: 10.6052/0459-1879-12-300
Li Yuan, Han Xu, Liu Jie, Jiang Chao. A PREDICTION METHOD ON HIGH-CYCLE FATIGUE PARAMETERS BASED ON DISSIPATED ENERGY COMPUTATION[J]. Chinese Journal of Theoretical and Applied Mechanics, 2013, 45(3): 367-374. doi: 10.6052/0459-1879-12-300
Citation: Li Yuan, Han Xu, Liu Jie, Jiang Chao. A PREDICTION METHOD ON HIGH-CYCLE FATIGUE PARAMETERS BASED ON DISSIPATED ENERGY COMPUTATION[J]. Chinese Journal of Theoretical and Applied Mechanics, 2013, 45(3): 367-374. doi: 10.6052/0459-1879-12-300

一种基于耗散能计算的高周疲劳参数预测方法

doi: 10.6052/0459-1879-12-300
基金项目: 国家自然科学基金(51175160),装备预先研究(62501036012)和国防科技大学预先研究(JC11-09-01)资助项目.
详细信息
    通讯作者:

    李源,讲师,主要研究方向:实验力学、疲劳可靠性和结构失效分析与预防.E-mail:yuanli@nudt.edu.cn

  • 中图分类号: O346.2

A PREDICTION METHOD ON HIGH-CYCLE FATIGUE PARAMETERS BASED ON DISSIPATED ENERGY COMPUTATION

Funds: The project was supported by the National Natural Science Foundation of China (51175160), Advanced Research Program of Army (62501036012) and Advanced Research Program of NUDT (JC11-09-01).
  • 摘要: 在热力学框架下,基于薄板假设,建立金属材料薄板试样在高周疲劳载荷作用下的热传导方程,将试样温度场数据和实时载荷信号导入,准确计算与高周疲劳损伤相关的单个循环内耗散能. 基于该方法,以316L不锈钢材料为例,通过实时监测试样不同应力水平下高周疲劳破坏全过程中耗散能的变化,拟合出耗散能-疲劳寿命曲线,呈现与传统的应力-疲劳寿命曲线相同的规律;提出一种新的预测高周疲劳极限的能量法,确定的疲劳极限与实验值相近.

     

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出版历程
  • 收稿日期:  2012-10-29
  • 修回日期:  2013-02-19
  • 刊出日期:  2013-05-18

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