Based on the force and displacement data of the tension experiment of TiNi SMA wires,the F-S pattern of beat to beat is drawn, and the cinic fitting, cinic subsection fitting, line subsection fitting and linear regression are made.

• 根据TiNi形状记忆合金丝材拉伸试验数据，绘制了F-S散点图，对拉伸曲线做了二次曲线拟合、二次曲线分段拟合、直线分段拟合以及分段经验直线回归，并进行了单因素方差分析，在所得结果中以二次曲线分段拟合为最好；