THERMODYNAMICS OF PSEUDOELASTICITY - AN ANALYTICAL APPROACH

被引:72
作者
FU, S
HUO, Y
MULLER, I
机构
[1] Institut für Thermodynamik und Reaktionstechnik, TU Berlin, Berlin 12, D-1000
关键词
D O I
10.1007/BF01177231
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
The phenomenon of pseudo-elasticity is connected with a phase transition. Its description requires a non-convex free energy and a non-monotone load-deformation curve. Realistic functions like that are too complicated to permit the analytic calculation of phase equilibria and the evaluation of stability properties of a phase mixture. One has to resort to graphical methods, see [1], or to numerical calculations. However, here we approximate the non-convex free energy by a train of two intersecting parabolae. This simplification enables us to carry out all calculation explicitly and it seems to describe - at least qualitatively - most phenomena observed in pseudoelasticity.
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页码:1 / 19
页数:19
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