用matlab画滞回曲线，每圈都能用不同颜色分开(Draw hysteretic curve, each circle can be separated by different colors)

滞回曲线求耗能面积，力位移曲线，每圈面积，与Excel交互(Force-displacement curve, area per circle, interaction with Excel)

MATLAB编程中，用于滞回曲线每一圈的分离(Hysteretic curve separation)

滞回曲线分析 计算能量耗散系数 滞回曲线的加载圈数(Press the Analyze button, and the hysteretic loop will be decomposed into separate loops, from which the hysteresis loop area, secant stiffness, equivalent viscous damping coefficient are obtain