关于结构体编程的实例，计算最大应力点，屈服强度等-About the structure of programming examples

用于r-o本构模型的计算，可以计算没有屈服平台的金属(R-O constitutive model calculation)

采用能量等值法计算骨架曲线的屈服荷载及位移等(Calculating yield load and displacement of skeleton curve by energy equivalent method)

混凝土应力应变曲线采用的10规范，损伤因子的计算采用的是sidiroff能量等价原理。初始损伤拉压均取在0.4*屈服强度位置。(The concrete stress-strain curve adopts the 10 specification, and the damage factor is calculated according to the Sidiroff energy equivalence principle.The initial damage tension and co