diff2

说明：  应用visual studio软件，将疲劳三个方向应力合成主应力(Used to stress stress synthesis in three directions as fatigue hot spot stress)

精细积分法Matlab程序，利用该程序对动力系统的微分方程精细求解。(The program of precise integration method MATLAB is used to solve the differential equation of dynamic system precisely.)

生成地震动反应谱的matlab函数，输入加速度时程，阻尼比，输出：1列：加速度反应谱，2列：速度反应谱，3列：位移反应谱(Matlab function for generating seismic response spectrum)

说明：  简易的配筋软件，适用CAD2014及以下版本。(Simple reinforcement software, applicable to CAD2014 and below version.)

说明：  包含各类材料具体参数，如金属、玻璃、密封胶、五金件等等。(Including the specific parameters of various materials, such as metal, glass, sealant, hardware and so on.)

说明：  该程序可进行2D和3D恒定流分析，程序中对矩阵含义和比较难理解的部分进行了简要说明(The program can be used for 2 D and 3 D constant flow analysis. The meaning of matrix and the parts that are difficult to understand are briefly explained in the program)

可以用该程序进行多自由度结构的地震控制计算(Earthquake control calculation of structures)

说明：  曾攀，清华大学，有限元教程，随书光盘，非常实用的书籍资料。(Zeng pan, Tsinghua University, finite element course, CD with book)

针对轨道动力学，模拟轨道不平顺的matlab编程，对轨道增加不平顺性，美国六级谱(Addition of track irregularity)

39节点系统稳态和暂态运算的bpa源代码(BPA power flow calculation code for 39-node system)