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jisaunerchongjifen
求解任意区域上的二元函数的二重积分，功能强大实用方便！(Solving binary function on any area of the double integral, powerful practical and convenient!)
- 2013-06-06 10:32:44下载
- 积分：1
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ADINA-Program
有限元源程序,结构分析软件，可以用于结构工程、近海工程等领域。(Adina FEM Program, can be used in structural engineering, offshore engineering, and so on)
- 2012-12-26 20:47:21下载
- 积分：1
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thin_film_N_K_T
通过测量光学薄膜的反射率曲线反演其光学常数，包括厚度与折射率(By measuring the optical thin film reflectivity curve inversion of its optical constants, including the thickness and refractive index)
- 2008-04-16 21:03:03下载
- 积分：1
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inpolygon.f
to judge points in a polygon
- 2013-10-17 17:17:43下载
- 积分：1
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fft
fast fourier transformation
- 2020-06-20 02:40:01下载
- 积分：1
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cpso
粒子群算法在解决非线性方程上的应用，给出了详细程序(Particle swarm algorithm for solving nonlinear equations, gives detailed procedures)
- 2012-09-12 11:14:34下载
- 积分：1
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程序
模拟电场中的等势线，利用计算机数学软件MATLAB模拟仿真真空中自由电荷，电偶极子，带电细棒，尖端导体等附近静电场电场线及等势线分布图型(Equipotential line in simulated electric field)
- 2018-12-25 10:55:02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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vumat
Abaqus定义材料本构用户子程序-VUMAT(Abaqus defined material constitutive user the subroutine-VUMAT )
- 2012-10-25 16:24:19下载
- 积分：1
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NND2D
用于求解二维欧拉流动方程的有限差分程序,基于NND法,求解精度较高.(Perfect fortran program by two dimensional NND finite difference method for Euler Equations on unstructured Grids, structured Grids and adaptive unstructured Grids. )
- 2011-12-12 21:08:50下载
- 积分：1
