-
非线性
说明： 用于计算非线性有限元分析的程序，该程序可以处理多种工况、多种类型单元组合结构问题。同时，还可以处理固定约束和指定位移的情况。(A program for nonlinear finite element analysis)
- 2019-12-28 15:38:45下载
- 积分：1
-
gmres
gmres 方法。视图求解线性方程组A*x=b的解x。nXn的稀疏矩阵A必须是方程且应是大型稀疏矩阵。列向量b的长度必须为n。(gmres method. View solving linear equations A* x = b the solution x. nXn sparse matrix A must be equation and should be large sparse matrix. The length of the column vector b must be to n.)
- 2013-09-13 16:29:56下载
- 积分：1
-
Iterative-dynamic-reduction
迭代的动力缩聚法计算结构的前两阶频率和阵型（4个自由度）(Iterative dynamic condensation method to calculate the structure of the first two natural frequencies and formation (4 degrees of freedom))
- 2013-07-08 14:45:37下载
- 积分：1
-
frft
分数阶fourier变换程序，基于插值和抽取操作和卷积运算的快速算法。(Fractional fourier transform procedures, based on interpolation and extraction operation and fast algorithm for convolution operation.)
- 2008-07-03 16:26:15下载
- 积分：1
-
UDS-unsteady
关于用户自定义标量输运（UDS)中非定态情况下的代码源项，主要用于非稳定流动的物质输运的耦合(On the code of the user-defined scalar transport (UDS) Central Africa steady state case the source terms, mainly for non-steady flow of the coupling of mass transport)
- 2021-03-02 15:09:34下载
- 积分：1
-
fft
信号提取，fft变换，模态分析，互相关分析(fft)
- 2020-06-29 10:00:02下载
- 积分：1
-
Goal_programming_model_sparse
针对多期随机规划问题，利用情景树方法来求解(For multi-period stochastic programming problems, the use of scenarios to solve Tree)
- 2016-01-05 21:33:06下载
- 积分：1
-
FFT
利用FFT估计正弦信号的频率,要估计一个叠加了高斯白噪声的正弦信号 的频率 ，可以通过对x(n)做傅里叶变换，得到频谱图，找出幅度的最大值对应的频率值 ，进行多次变换，求出均方误差 。改变信噪比SNR，通过仿真可以得出随着信噪比增加，均方误差减小。(Sinusoidal signal using FFT frequency estimation, to estimate a Gaussian white noise superimposed on the frequency of sinusoidal signals, can be achieved by x (n) be the Fourier transform to get spectrum to identify the magnitude of the frequency value corresponding to the maximum , several transformations, find the mean square error. Change the signal to noise ratio SNR, the simulation can be drawn as the SNR increases, the mean square error decreases.)
- 2011-04-26 10:53:04下载
- 积分：1
-
vlmd
计算低速气动力的涡格法程序，来自NASA，可信度高(This is a vortex lattice aerodynamic program from the low speed aerodynamics group at NASA Langley)
- 2021-03-17 18:19:21下载
- 积分：1
-
JIANDAN
ABAQUS Fortran学习的一个简单例子
- 2015-09-20 19:27:21下载
- 积分：1
