A MICROSTRUCTURE BASED CONSTITUTIVE MODEL FOR THE PSEUDOELASTIC BEHAVIOR OF NITI SMAS SUBJECTED TO NONPROPORTIONAL LOADING

摘要：

Experiments showed that the pseudoelastic behavior of NiTi shape memory alloys(SMAs) deformed along different loading paths is distinctly different1.Based on the assumption that a repressentative volume element(RVE)of the materials is composed of alternatively arranged parallel lamellas of martensite and austenite,the main characteristics in the pseudoelastic behavior of NiTi SMAs under pure tension and purd torsion.With the proposed approach,the pseudoclastic response of NiTi SMAs under nonproportional tensile-torsional loading is analyzed in this work by extending the oriented lamellar microstructure to randomly oriented lamellar microstructure.

关键词： pseudoelastic nonproportional micro-macro approach

作者: W.L.Pi X.H.Peng X.S.Long

作者单位: Department of Engineering Mechanics,Chongqing University,Chongqing 400044,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: 710-713

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）