vgg_quat_from_rotation_matrix

一维热传导模型，一维稳态热传导模型，有限差分法(One dimensional heat conduction model)

编制了theta映射法的ansys蠕变子程序(a creep subroutine of ansys that considered the theta-projection method)

说明：  基于OpenSEES平台的一个桥墩算例，可以供大家参考(An example of Bridge Pier Based on OPENSEES platform can be used for reference)

用于解决港口优化调度的算例，程序可解，且富有详细说明(The optimal scheduling algorithm used to solve the port, the program is solvable, and rich detailed instructions)

对实际采集的舰船辐射噪声进行了demo谱分析，分别采用了窄带解调和宽带解调两种方式，得到了较清晰的轴频和叶频信息。(use narrow-band and broad-band methods to demodulate the ship-radiated noise which is actually colleted, there can see clear axle frequency and blade frequency in the demo spectrum.)

铁木辛柯梁梁单元有限元程序，可以自动形成刚度阵，质量矩阵(Ironwood oct Ke Liangliang unit finite element program can automatically form stiffness matrix, mass matrix)

fft谐波分析的实例，并求出THD即谐波畸变率 (Examples fft harmonic analysis, and find THD)

4种计算积分的方法，并对精度进行比较，梯形法则，simpson法则(4 methods for calculating integral)

本程序是用MGS正交化方法求方程组的最小二乘解的程序(This program is the program of MGS orthogonalization method and the least squares solution of equations)

comsol .mph 压电案例文件 详细说明了如何进行压电操作(comsol .mph piezo example file)