damage

说明：  用于求解悬臂梁前3阶固有频率和振型（假设模态法，解析法，瑞利里兹法）(It is used to solve the first three natural frequencies and modes of cantilever beam (assumed mode method, analytical method, Rayleigh Ritz method))

说明：  autoform最全材料库，包含各类材料的详细参数及使用说明。(AutoForm is the most complete material library, including detailed parameters and instructions of various materials.)

采用初始应力法进行被动土压力分析，程序中对相关矩阵及每一步的意义进行了简要说明(The code uses the initial stress method to analyze the passive earth pressure. The relevant matrix and the significance of each step are briefly explained in the program.)

说明：  赤平投影软件 赤平投影安装时间为2010年7月26日。 试用期（一个月）过后，需将系统时间更改为上次安装时间方可继续使用该程序。(The LISP program. The installation time of stereographic projection is July 26, 2010. After the probation period (one month), you need to change the system time to the last installation time before you can continue to use the program.)

说明：  一部分是Fortran代码可以用自学，一部分是abaqus hetval子程序用来实现混凝土水化热的代码(Part of the Fortran code can be used for self-study, and part of the code for the abaqus hetval subroutine to realize the heat of hydration of concrete)

铝合金门窗辅助设计营销。输入门窗洞口尺寸，系统自动打印下料单、玻璃单、示意图、收银……(Aluminum alloy doors and windows aided design marketing. Input the size of the door and window opening, the system automatically prints the blanking list, glass sheet, schematic diagram, cash register...)

说明：  MATLAB 脚本的振型叠加计算内容， 属于结构动力学的内容，为英国大学教授的教学脚本(SDOFof superposition worked exampleSDOF)

说明：  ABAQUS摩擦系数子程序，可以用于数值计算(ABAQUS friction coefficient subroutine)

说明：  四参数建模，matlab编写，用于多孔介质，煤炭，岩石等(Four parameter modeling, matlab preparation, for porous media, coal, rock, etc)

说明：  abaqus的平板约束数值模拟源文件，适合abaqus新手操作练习使用(ABAQUS source files for numerical simulation of plate constraints, suitable for ABAQUS novice operation exercises)