材料参数与镍钛形状记忆合金的本构关系  

THE MATERIAL PARAMETERS IN CONSTITUTIVE RELATIONS FOR TINI SHAPE MEMORY ALLOYS

作　　者：Weijia Tang Rolf Sandstrom(Royal Institute of Technolog,Stockholm, Sweden) 

出　　处：《医用生物力学》1995年第2期35-36,共2页Journal of Medical Biomechanics

摘　　要：在Ｔａｎａｋａ模型基础上，我们讨论了形状记忆合金热力学特性的本构关系。特别注意了桓温拉伸过程和强迫回复过程。本构方程的材料参数，即弹性模量Ｄ，变化张量Ω，热力弹性张量均以镍钛合金实验测试值来确定。在不同的应力－应变－温度关系试验中发现Ｄ和Ω与温度之间有很强的相关性。Constitutive relations describing thermomechanical behaviour of shape memory alloys(SMA)are discussed based on Tanaka's model. Special attention has been paid to the isothermal tensile process and the constrained recovery process.The material parameters in the constitutive equations,namely the elastic modulus D,the transformation tensor Ω,and the thermoelastic tensor Θ.are assessed by using experimental date of TiNi alloys.Strong temperature dependencies of D and are found from different experimental stress-strain-temperature relations.

关 键 词：形状记忆合金 本构方程 Tanaka模型 镍钛合金 

分 类 号：TG139.6[一般工业技术—材料科学与工程]