Rungkuta4

用三元组表为结构，实现稀疏矩阵的加法并输出。(Achieve sparse matrix addition)

数值分析实验1.明确插值多项式和分段插值多项式各自的优缺点； 编程实现拉格朗日插值算法，分析实验结果体会高次插值产生的龙格现象；(Experiments of numerical analysis 1. Define the advantages and disadvantages of interpolation polynomials and piecewise interpolation polynomials. The Lagrange interpolation algorithm is programmed, and the Runge phenomenon produced by high-order interpolation is analyzed.)

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)

该文件是用matlab开发的图论分析工具箱， 里面有使用时的详细说明，pdf说明文档。 绝对实用对于图论的研究者(The document was developed with matlab graph theory analysis toolbox, which are used when a detailed explanation, pdf documentation. Absolutely useful for researchers in graph theory)

计算流体力学经典程序Roe格式，每步有说明，适合初学者(Computational Fluid Dynamics classical procedures Roe scheme, each step is described, suitable for beginners)

说明：  ABAQUS 的二次开发,详细注释说明，自学ABAQUS的二次开发(ABAQUS secondary development, detailed notes, self-study ABAQUS secondary development)

This source file contains example PitchCntrl(), UserHSSBr(), ! UserVSCont(), and UserYawCont() routines that are used to interface ! FAST with a master controller implemented as a dynamic-link-library ! (DLL) in the style of Garrad Hassan s Bladed wind turbine software ! package. All four routines call routine BladedDLLInterface(), which ! contains a call to the Bladed-style DLL that evaluates as DISCON(). ! Routine BladedDLLInterface() USEs a MODULE named ! BladedDLLParameters(), which stores values of PARAMETER constants ! used in the interface.

说明：  利用muscl格式求解可压缩多相流，采用minimod,vanabada限制器(Using muscl scheme to solve the compressible multiphase flow, using Minimod, vanabada limiter)

abaqus子程序学习资料，欢迎大家下载学习，共同讨论~(ABAQUS subroutine learning materials)

QT编写功能及界面，实现功能：加、减、乘、除、连加、连减、连乘、连除、加减乘除混合运算、除零报错等功能，代码简单清晰，适用于刚刚接触QT的人(QT write functions and interface functionality: add, subtract, multiply, divide, even increase, even less, and even multiply, even in addition, subtraction, multiplication and division mixed operations, in addition to the zero error function, the code is simple and clear, suitable for just contact The QT)