util_mod

计算电磁学有限元法全美经典教材，金建铭编著英文版(FEM computational electromagnetics American classic textbook, Jin Jianming edited English)

二维交错网格SIMPLE算法fortran计算程序，包括主程序和用户定义程序。(The two-dimensional to SIMPLE algorithm the fortran calculation procedures staggered grid, including the main program and the user-defined procedures.)

金属断裂的数值计算提供理论依据及实际详例解读(The numerical calculation of metal fracture provides theoretical basis and interpretation of practical examples)

stiff differential equations examples

ABAQUS纤维增强复合材料损伤失效UMAT(ABAQUS UMAT subroutine for fiber-reinforced composite failure analysis)

说明：  基于矩阵QR分解的最小二乘拟合MATLAB源程序(based on QR decomposition of the matrix least squares fitting MATLAB source )

假设有一个能装入总体积为T的背包和n件体积分别为w1 , w2 , … , wn 的物品，能否从n件物品中挑选若干件恰好装满背包，即使w1 +w2 + … + wn=T，要求找出所有满足上述条件的解。例如：当T=10，各件物品的体积{1，8，4，3，5，2}时，可找到下列4组解：（1，4，3，2），（1，4，5），（8，2），（3，5，2）。 [需求分析](Suppose there are a load of the backpack of the total volume of T and n volumes were w1, w2, ... wn items, whether selected from n items a number of exactly filled backpack, even if w1+w2+ ...+ wn = T, find out the solution of all the above conditions are met. For example: when T = 10, the volume of items {1,8,4,3,5,2}, can be found in the following four solutions: (1,4,3,2), (1,4,5 ), (8,2), (3,5,2). [Needs Analysis])

根据 Cijkl 计算各向异性介质不同方向的速度(According to Cijkl, the velocities of anisotropic media in different directions are calculated)

FFT+FT连续细化傅立叶变换分析校正法 还请各位多多指教。 参考自丁康老师《离散频谱校正技术》 (FFT+ FT for Fourier transform analysis of detailed correction method is also called upon the exhibitions. Ding Kang reference from the teacher, " Discrete Spectrum Correction" )

godunov方法求解burgers方程,Toro书上的源代码翻译成MATLAB(burgers equation godunov method, Toro books translated into the source code for MATLAB)