stance_dff

用c++实现m次多项式的曲线拟合，改程序简单易懂，可读性强(it s easy)

利用不动点迭代和牛顿迭代求解非线性方程解的理论(Theory of Solving Nonlinear Equations by Fixed Point Iteration and Newton Iteration)

实对称矩阵的schur分解，编译即可运行，需要文件输入(schur decomposition for real symmetric matrix,the program can run successfully, you need a file for input)

涡格法进行无人机的设计，升力系数，阻力系数，力矩系数等等，美过圣母大学的设计辅助软件(VLM)

用fortran语言读取NC格式的数据,与大家分享，希望能够共同进步哈，谢谢(Used fortran language to read NC data format to share with you, hoping to make progress together Ha, thank you)

用于计算stewart 六自由度运动平台的正解问题(this program is designed for stewart platform。)

程序是关于计算两相黎曼问题的一个求解器。可以直接设置。(The code is a solver about the two-phase Riemann problem. the user can use it directly.)

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.)

解释有限元程序SAP5的原理，结构，算例的一本书籍(The finite element program SAP5 explain the principles, structure, examples)

说明：  吉尔数值算法，求解刚性微分方程组，稳定好，收敛好(Gill numerical algorithm, good stability and convergence for solving rigid differential equations)