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fitellipse(two-method)
我收集的老外编的椭圆拟合算法，C++实现，输入一组XY数据就能求出椭圆参数(I collected foreigner series the oval fitting algorithm, C++, achieve)
- 2020-10-16 09:17:29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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POLY2
一元稀疏多项式编程，希望对大家的编程有点用，欢迎下载(hope it useful to you)
- 2010-05-19 13:28:14下载
- 积分：1
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bat
用matlab实现新的启发式算法—蝙蝠算法，用于生产优化问题(New heuristic- bat algorithm for the production optimization problem using matlab
)
- 2012-07-26 19:09:39下载
- 积分：1
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shengxianchangdu
程序计算在声速梯度下水中声线的传播并计算声线的长度(Program calculates the velocity gradient in the water line of acoustic sound propagation and calculate the length of the line)
- 2021-04-23 14:28:47下载
- 积分：1
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FCM
说明： 模糊C均值聚类，matlab程序，FCM(Fuzzy c-means clustering, matlab program, FCM)
- 2020-06-23 21:37:16下载
- 积分：1
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acoustic
交错网格声波方程交错网格有限差分地震波场计算波场正演模拟。
(The CalCulation of the SeismiC Wave一 fieldwith
Staggered-grid Finite difference Sheme
)
- 2010-09-19 15:53:45下载
- 积分：1
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perf_plas_J2
说明： 通过MATLAB编程模拟理想弹塑性应力应变曲线(Simulating the stress-strain curve for perfect plasticity by MATLAB coding.)
- 2020-12-10 01:59:19下载
- 积分：1
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Volterra
可是实现产生均匀分布的混沌序列，可以用于均匀分布的伪随机发生器(uniform distribution of the chaotic sequence)
- 2012-11-15 14:57:58下载
- 积分：1
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mazar-model_umat
UMAT in ABAQUS for Mazar s model of concrete damage
- 2012-09-03 10:45:03下载
- 积分：1
