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abaqus3D-8Node_uel
abaqus三维8节点实体单元Fortran子程序，里面有详细的注释，有单元开发兴趣的同学可以下载学习(The fortran subroutine of the 8 node solid element of ABAQUS, with detailed comments in the unit development interest students can download learning)
- 2017-02-20 19:50:14下载
- 积分：1
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sy3
说明： matlab程序，有约束最优化问题直接法--复合形法(matlab program, constrained optimization problems are the direct method- the complex method)
- 2008-11-04 11:59:46下载
- 积分：1
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SVD
％ 奇异值分解 (sigular value decomposition,SVD) 是另一种正交矩阵分解法；SVD是最可靠的分解法，
％ 但是它比QR 分解法要花上近十倍的计算时间。[U,S,V]=svd(A)，其中U和V代表二个相互正交矩阵，
％ 而S代表一对角矩阵。 和QR分解法相同者， 原矩阵A不必为正方矩阵。
％ 使用SVD分解法的用途是解最小平方误差法和数据压缩。用svd分解法解线性方程组，在Quke2中就用这个来计算图形信息，性能相当的好。在计算线性方程组时，一些不能分解的矩阵或者严重病态矩阵的线性方程都能很好的得到解( Singular value decomposition (sigular value decomposition, SVD) is another orthogonal matrix decomposition method SVD decomposition is the most reliable method, but it takes more than QR decomposition near ten times the computing time. [U, S, V] = svd (A), in which U and V on behalf of two mutually orthogonal matrix, and the S on behalf of a diagonal matrix. And QR decomposition are the same, the original matrix A is no need for the square matrix. The use of SVD decomposition method are used as a solution of least squares error method and data compression. Using SVD decomposition solution of linear equations, in Quke2 on to use this information to calculate the graphics performance quite good. In the calculation of linear equations, some indecomposable matrix or serious pathological matrix of linear equations can be a very good solution)
- 2020-12-21 10:29:08下载
- 积分：1
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矩阵的运算
矩阵运算实矩阵相乘复矩阵相乘实矩阵求逆的全选主元高斯约当法(matrix calculation real matrix multiplication complex matrix multiplication matrix inversion is a wholly-elected PCA Gaussian about when France, etc.)
- 2021-03-18 22:49:19下载
- 积分：1
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1D_introduction-FDTD
很详细的一维FDTD介绍，以及MATLAB程序说明(Very detailed one-dimensional FDTD presentation and description of the MATLAB program)
- 2021-03-26 23:29:12下载
- 积分：1
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MATLAB智能算法30个案例分析_12947138_史峰
这些代码主要是解决数学建模中存在的一些普遍问题的。(These codes mainly deal with some common problems in mathematical modeling)
- 2020-11-22 17:39:35下载
- 积分：1
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beam
《ABAQUS在岩土工程中的应用》-费康中二次开发的梁单元应用(" ABAQUS in geotechnical engineering" - charges the secondary development of health in the application of beam elements)
- 2011-05-22 22:04:52下载
- 积分：1
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ufric
Fric User defined in ABAQUS
- 2012-01-04 20:59:13下载
- 积分：1
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daoxian
导线网平差程序，参数约束，通过设定不同的PX达到经典自由网，普通自由网，拟稳平差效果，算例(Wire net adjustment procedures, parameters, constraints, and examples)
- 2012-04-13 10:36:43下载
- 积分：1
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3DDC
此代码属于地球物理领域，是用有限差分开发的直流电法三维正演，基于FORTRAN平台，此代码具有很高的运算效率，对于从事地球物理领域的人来说是不可多得的(This code belongs to the field of geophysics, is developed using finite difference method of three-dimensional forward modeling of DC, FORTRAN-based platform, this code has high computing efficiency, people engaged in geophysical field is rare)
- 2013-12-05 22:36:46下载
- 积分：1
