Fortran-Programs

计算方法：主要是高斯消去法的C语言算法实现(Calculation method: Gaussian elimination)

说明：  利用正交向量法求Lorenz系统的李雅普诺夫指数，并绘出指数谱图。(Orthogonal Vector Method Lorenz system, Lyapunov exponent, and draw the index spectrum.)

系统仿真导论第一个实验程序，龙格库塔实验程序(Introduction The first experimental system simulation program, Runge-Kutta experimental procedures)

fortran90程序，运用Runge-Kutta法数值求解常微分方程的程序，非常适用，包括源代码、一个算例和输出程序(fortran90 procedures, the use of Runge-Kutta method for numerical solution of ordinary differential equations of the process, is very applicable, including source code, a numerical example and output procedures)

lu分解矩阵求逆... =========== 紫薯紫薯...(Matrix LU decomposition inversion)

对于方程组AX=b，当系数矩阵非奇异时，对原方程进行改写，利用公式X^k=BX^(k+1)+g进行迭代求解。(For equations AX = b, when the coefficient matrix is ​ ​ nonsingular, rewriting the original equation, using the formula X ^ k = BX ^ (k+1)+g for iterative solution.)

邻带计算，高斯正反算，可以实现测绘系统内简单的转换计算，但是是基于80坐标系统的。(failed to translate)

说明：  利用时域有限差分计算电磁场，采用时域算法计算(Calculation of electromagnetic field by FDTD)

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)

适用于ABAQUS的自定义材料子程序，适用于Johnson-Cook材料模型(Apply to custom material ABAQUS subroutine for Johnson-Cook material model)