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研究了不同热处理制度下的NiTiSMA丝在马氏体状态下的拉伸实验，提出对由此所得的形状各异的应力一应变曲线通用的物理模型，进而作数值模拟。模拟结果与实验吻合较好。
The tensile experiments of NiTiSMA wire under different heat treatment conditions in martensitic state were studied. The general physical model of stress-strain curve with different shape obtained by this method was put forward and numerical simulation was carried out. The simulation results are in good agreement with the experiment.