40中差分格式的Fortran源代码

dassl求解器说明文档 微分代数系统求解器DASSL以及两个例子文件 大尺度微分代数系统求解器DASPK软件2.0版(dassl solver documentation Differential Algebraic System Solver DASSL and two examples of large-scale file system differential algebraic solver DASPK software version 2.0)

四分之一圆柱贴体网格的生成，可以调节大小(Fourth cylindrical body-fitted grid generation, you can adjust the size of the)

ABAQUS材料本构的二次开发讲解，详细说明。(Introduction to the secondary development of ABAQUS material constitutions.)

J2流动理论加上破坏失效判据的程序，用于ABAQUS中的vumat程序，功能模拟加载到失效破坏的过程(J2 flow theory coupled with damage failure criteria of the program for the vumat ABAQUS program, functional simulation load to failure of the process of destruction)

CSAMT一维反演程序，基于L-BFGS方法的水平电偶极一维反演(CSAMT one dimensional inversion procedure, based on L- BFGS method of horizontal electric dipole one dimensional inversion)

说明：  求解齿轮的热弹流润滑问题，本程序中说明了每个子程序的用途，而且带注释。(To solve the thermal elastohydrodynamic lubrication problem of gears, the purpose of each subroutine is explained in this program, and there are comments.)

这是一个数值计算Fortran程序，将矩阵进行奇异值分解，SVD.txt存放待分解的矩阵，u.dat,v.dat为分解后的左右矩阵，qiyizhi.dat和qiyizhi0.dat为得到的奇异值。(This is a numerical Fortran program matrix singular value decomposition, SVD.txt store to be factored matrix, u.dat, v.dat about decomposition of the matrix, qiyizhi.dat and singular value obtained qiyizhi0.dat .)

利用openmp导语，开发fortran并行程序，计算pi的近似值并比较误差。通过改变不同步长可以测试并行程序加速效果.加速效果明显提高

包括三角形单元，四边形单元以及等参八节点单元

一种高效全局优化算法，广泛用于水文模型参数优选(A high efficient global optimization algorithm widely used for parameter optimization of hydrological model)