A MESOSCOPIC CHARACTERIZATION OF CREEP IN THIN METAL FILMS

摘要：

A mesoscopic characterization of mechanical behavior of thin metal films is developed.A functional of energy rate is set up.Introducing diffusion boundary conditions coupled with elastic and plastic process,an equation which can be solved by finite element method is derived from variation of the function.The method is illustrated with examples of creep in thin metal films with different parameters.Results show that the significance of different mechanisms varies with the parameters.The method is available for qualitative or semi-quantitative analysis of thin metal films in mesoscopic scale.

关键词： thin films diffusion dislocation creep

作者: Y.X.Zheng L.S.Niu H.J.Shi

作者单位: Failure Mechanics Laboratory Department of Engineering Mechanics,School of Aerospace,Tsinghua University,Beijing 100084,P.R.China

会议类型: 国际会议

会议名称: 第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)

会议地点: 安徽黄山

会议语种:英文

页码: 1581-1584

在线出版日期: 2008-06-03（万方平台首次上网日期，不代表论文的发表时间）