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材料构型力学及其在复杂缺陷系统中的应用

李群

李群. 材料构型力学及其在复杂缺陷系统中的应用[J]. 力学学报, 2015, 47(2): 197-214. doi: 10.6052/0459-1879-14-240
引用本文: 李群. 材料构型力学及其在复杂缺陷系统中的应用[J]. 力学学报, 2015, 47(2): 197-214. doi: 10.6052/0459-1879-14-240
Li Qun. MATERIAL CONFIGURATIONAL MECHANICS WITHAPPLICATION TO COMPLEX DEFECTS[J]. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(2): 197-214. doi: 10.6052/0459-1879-14-240
Citation: Li Qun. MATERIAL CONFIGURATIONAL MECHANICS WITHAPPLICATION TO COMPLEX DEFECTS[J]. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(2): 197-214. doi: 10.6052/0459-1879-14-240

材料构型力学及其在复杂缺陷系统中的应用

doi: 10.6052/0459-1879-14-240
基金项目: 国家自然科学基金项目(11472205, 11202156, 11321062, 11172228) 和德国洪堡基金项目资助.
详细信息
    通讯作者:

    李群,副教授,主要研究方向:材料构型力学,断裂与损伤力学.E-mail:qunli@mail.xjtu.edu.cn

  • 中图分类号: O346.1

MATERIAL CONFIGURATIONAL MECHANICS WITHAPPLICATION TO COMPLEX DEFECTS

Funds: The project was supported by the National Natural Science Foundation of China (11202156, 11321062, 11172228, 10932007) and Alexander von Humboldt Foundation in Germany.
  • 摘要: 基于材料构型力学描述复杂缺陷力学系统中的破坏行为, 可以为预测材料临界失效载荷和评估结构完整性提供新的思路. 首先, 通过对拉格朗日能量密度函数的梯度、散度、旋度操作分别获取3 类材料构型应力张量的定义式、平衡方程、物理意义以及其对应的守恒积分表达式. 其次, 基于材料构型力学概念建立描述材料屈服的屈服准则、预测裂纹起裂的断裂准则、以及评估复杂缺陷系统最终失效的破坏准则. 然后, 利用数字散斑图像相关技术, 开发材料构型力学相关参量的无损测量方法. 最后, 将材料构型力学概念应用于纳米损伤力学和铁电多晶材料的断裂力学中, 为此类新型材料的损伤水平评估提供理论支撑.

     

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出版历程
  • 收稿日期:  2014-08-18
  • 修回日期:  2014-09-29
  • 刊出日期:  2015-03-18

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