jisuanqi

一个drucker prager模型的 的用户子程序，用于求解平面应变问题 abaqus UMAT and inp(drucker prager yield model for abaqus )

这是一个关于高精度阶乘的程序，测试可用！！！(This is a program on the high-precision factorial test available! ! !)

基于分数阶傅里叶变换的线性调频信号的自适应时频滤波，希望对大家有用(Based on Fractional Fourier Transform Linear FM signal adaptive time-frequency filtering and hope for all of us)

用Lanczos方法求解矩阵的最大几个奇异值的Matlab程序。(Matlab codes for large singular value with Lanczos Methods)

2015年全国大学生数学建模比赛创意折叠桌，利用Mathematica实现(2015 National Undergraduate Mathematical Modeling Competition creative folding table, using Mathematica to achieve)

是一个基于Fortran语言计算 第一主应力 和 第三主应力 结构数值计算方便的代码(Fortran language is a calculation based on the first principal stress and the third principal stress code structure to facilitate numerical calculation)

matlab求解变系数双曲方程，使用迎风格式(matlab solves the hypolic equation using upwind method)

开源的克里金插值算法 开源的克里金插值算法(Open source Kriging interpolation algorithm)

说明：  Abaqus复合材料Hashin失效子程序(Failure subroutine of Hashin for ABAQUS composite)

2维TE波的FDTD的源程序。周期边界条件，有限宽度的吸收边界条件(Two-dimensional TE wave FDTD source. Periodic boundary conditions, the limited width of the absorbing boundary conditions)