通过修正Clausius Clapeyron方程 ,使之在马氏体分数不断变化的条件下仍然适用 ,并在此基础上建立了TiNi形状记忆合金的回复力模型 ,模型中的参数均可通过实验确定 .利用此模型 ,使用典型的TiNi形状记忆合金性能参数 ,计算得到了TiNi形状记忆合金回复力与温度的关系曲线 ;与实验测试曲线的对比表明 ,本模型在大的预应变条件下与实验结果是吻合的 The Clausius Clapeyron equation is modified to make it suitable for the martensitic fraction changing. On the basis of this, a restorative force model of TiNi shape memory alloy is established, and the parameters in the model can be determined experimentally. By using this model , A typical TiNi shape memory alloy performance parameters were used to calculate the relationship between the recovery force and the temperature of the TiNi shape memory alloy. Comparing with the experimental test curve, the model is in good agreement with the experimental results