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Ascii-Char
ascii char conversion
- 2011-12-19 01:36:48下载
- 积分：1
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Homotopy
求解非线性方程组
的同伦曲线法(Solving nonlinear equations homotopy curve method)
- 2008-07-04 01:42:06下载
- 积分：1
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ABAQUS+UMAT+FORTRAN
ABAQUS中用户材料子程序UMAT的开发主要解决两方面的问题：本构模型的建立和积分算法的选择。
本文主要研究非线性材料的UMAT实现方法，并重点研究其迭代算法部分，目前，用户材料子程序UMAT的迭代算法主要是常刚度法，常刚度法的优点在于算法原理较简单，程序编写较方便，缺点是当遇到复杂非线性材料时，其迭代次数较多，收敛速度也较慢，在这个情况下，本文采取的是一种迭代次数较少且收敛速度较快的切线刚度法，具体就是采用FORTRAN语言编制了基于Von-Mises模型的接口程序,并采用切线刚度算法，通过与ABAQUS自带本构关系计算的结果相比较，验证其正确性。(This paper studies the user subroutine UMAT of ABAQUS development methods, the use of FORTRAN language isotropic hardening material model of the interface program, studied the effects of such material is extremely elastic-plastic constitutive relation method.
This article UMAT tightly around the secondary development of technology, the first principle of its interface detail, and then for the theory of nonlinear finite element incremental stiffness of the regular tangent stiffness method and the theory of algorithms to do an in-depth analysis of deduced a regular tangent stiffness and rigidity of the law of the specific expression of algorithm theory, and then the preparation of the two algorithms, respectively, of the UMAT program, and finally the establishment of a specific model checking, bringing with ABAQUS elasto-plastic constitutive relation of the calculated results compared to verify the correctness of the two.)
- 2020-12-05 21:59:24下载
- 积分：1
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fdtd2dTM
时域有限差分 2维 完全匹配层
犹他州大学(fdtd method 2D pml perfect mached layed
www.ece.utah.edu)
- 2012-11-20 08:16:20下载
- 积分：1
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LM_method
说明： LM莱文博格马夸特优化算法，python语言(this is a file of LM algorithm which was wroten by python language)
- 2020-03-02 19:37:17下载
- 积分：1
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LZYGSXY
数值分析课程必备的算法：列主元高斯消去法算法。有需要的同学下载(Numerical analysis courses required algorithms: PCA out Gaussian elimination algorithm. Those students in need to download)
- 2009-01-05 22:38:00下载
- 积分：1
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Matrix-Method-game-theory
利用矩阵法求解对策论中的二元零和博弈最优策略(Game theory using matrix method for solving binary zero-sum game in the optimal strategy)
- 2013-06-16 11:10:04下载
- 积分：1
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断裂力学中的数值计算方法及工程应用-算例程序
说明： 金属断裂的数值计算提供理论依据及实际详例解读(The numerical calculation of metal fracture provides theoretical basis and interpretation of practical examples)
- 2019-03-15 13:45:02下载
- 积分：1
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递推最小二乘
说明： 一般的最小二乘通常是一次拿到全部的数据， 对所有数据进行统一优化计算得到模型系数。递推最小二乘是以一种递推的方式计算最小二乘，每次使用最新的测量值，来不断更新模型系数。(General least squares usually get all the data at one time, and perform unified optimization calculations on all the data to get the model coefficients. Recursive least squares is to calculate the least squares in a recursive way, each time the latest measured value is used to continuously update the model coefficients.)
- 2021-04-24 15:18:47下载
- 积分：1
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weno5
weno5求解sod激波管问题，是初学计算流编程时做作业的题目，供参考(sod shock problem solve by weno5 for reference)
- 2016-10-27 15:30:09下载
- 积分：1
