nonlinear

说明：  应用龙格库塔算法求解动力学微分方程，求解时域数据(Solving dynamic differential equation with Runge Kutta algorithm)

离散数据生成tin的优秀代码，注释多，易于学习和移植(Discrete data generated tin excellent code, comments, easy to learn and transplantation)

说明：  本程序可计算二维光子晶体的带隙，并得出带隙图，和带隙位置及宽度(This procedure computable two-dimensional photonic bandgap crystals, and came to the band-gap maps, and the band-gap position and width)

说明：  有限元分析视频学习，可用于有限元分析视频学习(Finite element analysis video learning, used for finite element analysis video learning)

三维 近场－远场 变换 FDTD...........(FDTD near field to far field transmition)

求解四元三次方程组，通过在VC++的编程环境，实现计算的高速运行(Solving four yuan cubic equations by VC++ programming environment, to achieve high-speed operation calculated)

求解二阶变系数常微分方程,主要用于涡激振动中频率响应的计算(Solving second-order ordinary differential equations with variable coefficients)

三相潮流计算，使用的是牛顿拉弗逊方法。迭代较快。是解决潮流的较有效的方法。(Three-phase power flow calculation, using Newton' s method Laffer Johnson. Iterate rapidly. The trend is to solve the more effective method.)

线弹性模型，可以对一般的弹性体通过abaqus进行验证使用(Linear elastic model)

frft程序函数，分数阶傅立叶变换，短时傅立叶变换，傅立叶变换(the frft program function, fractional Fourier transform, short-time Fourier transform, Fourier transform)