计算线性波浪波面水质点速度和加速度

在pscad中建立风机模型亲测可用如有问题请指正(DFIG in pscad)

说明：  徐世良经典算法集合，包含常用的各种算法，供大家下载参考(index for FEM code)

说明：  用户单元子程序, 考虑4自由度绗架杆单元,可以进行非线性分析.(The user unit subroutine, considering 4-DOF bar element, can be used for nonlinear analysis)

声波，2维，逆时偏移程序.由于实现2维声波逆时偏移。包含参数卡文件，主程序以及Makfile文件。(reverse time migration for 2D acoustic wave. include parameter file ,main program and Makefile)

通过Fortran语言，利用牛顿方程迭代来求解非线性方程组，可设置为二元或多元(Through the Fortran language, the Newton equation iteration is used to solve the nonlinear equations, which can be set to two yuan or multivariate.)

对干涉图进行相位提取后，要获得真实相位图分布，需要对相位主值图进行展开，即相位解缠绕，本程序应用基于调制度方法进行解缠绕。(Right to interfere in the phase diagram extracted to obtain the true distribution of the phase diagram, the need to start phase diagram principal value, that is, the phase winding solution, the program application solution based on the modulation method of winding.)

Fortran program which can be used to solve linear system

fortran常用算法集-徐世良，配合书籍使用，很好用(Algorithm sets by xushiliang)

说明：  内聚力的循环本构开发，新的UEL单元，比较复杂，很难学会的(Cyclic constitutive development of cohesion)

说明：  UMAT学习资料，主要是通过UMAT编写线性粘弹性的学习材料(UMAT Learning Materials)