使用Fortran实现DIF-FFT

Chemkin III source file (Chemkin III source )

采用初始应力法进行被动土压力分析，程序中对相关矩阵及每一步的意义进行了简要说明(The code uses the initial stress method to analyze the passive earth pressure. The relevant matrix and the significance of each step are briefly explained in the program.)

应用于高速碰撞的相关子程序，考虑了在高速碰撞中单元畸变的沙漏模型。。(Related subroutines used in high-speed collision, taking into account distortion in high speed crash in the hourglass model unit. .)

说明：  Guide to FORTRAN 2008 Programming

通过滑动T检验时间序列的变化趋势，一般多用于气象分析(T-test time series by sliding the trend, generally used for weather analysis)

有限元NONSAP源程序，里面带有例子，大家可以参考。(Finite element NONSAP source, which with examples, we can refer to.)

这是一个风力机的气动软件，可以算是一个新新之秀，国内现在也有很多个人和公司在使用，的确是替代blade的一个优秀的开源fortran软件(A software used to perform simulation with wind turbine)

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 )

这是一个很好的程序，好动一拿出来和大家一起分享(This is a very good program, active up to share with everyone)

PSCAD的研究次同步振荡的程序 采用第一标准测试模型(Research PSCAD SSO standard procedures for the use of the first test model)