经典99行拓扑优化程序

面向对象的有限元程序设计 ——空间8结点等参元的分析计算(Object-oriented finite element program design- space 8 node isoparametric element analysis calculation)

由工况HWFET数据和整车参数来计算整车瞬时需求功率，并绘制出功率需求图。(The instantaneous demand power of the whole vehicle is calculated by the HWFET data and the vehicle parameters, and the power demand map is drawn.)

提出基于高速公路收费站进出口数据推算OD矩阵的一般方法。在缺乏初始OD矩阵的条件下,结合指数平滑法和无约束重力模型思想,通过VB编程反复迭代进行初始OD矩阵推算 利用组合模型预测高速公路各收费站出入口流量,通过弗雷特法进行OD分布推算。以沪宁高速公路为例证实此方法具有较高的精度。(Proposed highway toll station-based import and export data projections general OD matrix method. Lack of initial OD matrix conditions, combined with the exponential smoothing and unconstrained gravity model of thinking, through the VB Programming iterative initial OD Matrix Estimation flow of the use of a combination of model predictions highway toll station entrances and exits through Fratar Method for OD distribution projections. Shanghai-Nanjing Expressway, for example to confirm that this method has higher accuracy.)

弗洛伊德算法最短距离的实现，输入为邻接矩阵，输出为最短距离矩阵。(Freud' s realization of the algorithm for the shortest distance, enter the adjacency matrix output for the shortest distance matrix.)

利用Mathematica实现数值分析，包括Gauss-Seidel迭代，Jacobi迭代法，SOR法，牛顿迭代法等(Mathematica is used to realize numerical analysis, including Gauss-Seidel iteration, Jacobi iteration, SOR method, Newton iteration method, etc.)

c++的有限元源码,带说明书和测试数据,是难得的有限元开发资料.(This is the code of finite element method, with manual document and data samples, it is valusble for FEM development)

说明：  16点基4—FFT算法编程。输入16点的序列，采用基4-fft方法计算其快速傅里叶变换。(16 points-based 4-FFT algorithm for programming. Enter the 16-point sequence, with the base 4-fft method for calculating the fast Fourier transform.)

混沌仿真CHEN系统仿真，陈关荣老师的混沌系统。(y_e2 = c*y_h + (c - a)*(x_0+(h/2)) -(x_0+(h/2))*(z_0+(h/2));)

用于生成空气动力学力学计算中的计算O型网格(generate the calculational grid)

产生 50 个标准正态分布的随机数, 经验累计分布函数图.(Random number generated 50 standard normal distribution, noting their distribution characteristics, and to draw experience cumulative distribution function diagram.)