The static and dynamic analysis program, which is based on the incremental loading and modified stiffness matrix method, is generated to analyze concrete frame. 建立基于增量荷载变刚度法求解的确定性静力非线性有限元程序及动力分析程序分析框架结构的静力和动力反应。为随机模拟和随机可靠度分析奠定基础。
The study gives a qualitative and quantitative dynamic fracture analysis, and a three-dimensional finite element program is developed to compute the dynamic stress intensity factor for a semi-elliptic surface crack in an elastic solid of finite size under impact loading. 在定量分析中,编写了该裂纹结构受冲击载荷作用下的全尺寸三维动态有限元程序,并进行了大规模的数值计算,确定了表面裂纹动态应力强度因子,论证了该事故发生的原因。