NiTi形状记忆合金拉伸实验及数值模拟

On the Stress-Strain Relations of NiTi Shape Memory Alloys Experiments and Numerical Simulations

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。

We studied here the stress-strain relations NiTi SMA wires in martensitic state temperature, under different heat treatments. Weintroduced a physical model baed on Preisach model to model the obtained curves. Numerical simulations has performed. Thecoincidence between the numerical results and the experimental curves is quite good.