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kalmanfilter_aero_radar
说明： 在雷达上应用卡尔曼滤波算法对目标轨迹进行预测(The application of the radar Kalman filter algorithm to predict the target trajectory)
- 2009-08-11 10:21:41下载
- 积分：1
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xv240
基于多相结构的信道化接收机，一些自适应信号处理的算法，是小学期课程设计的题目。( Channelized receiver based on multi-phase structure, Some adaptive signal processing algorithms, Is the topic of the elementary school stage curriculum design.)
- 2017-05-09 20:42:24下载
- 积分：1
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PQ-chaoliujisuan
利用快速解耦法进行电力系统潮流计算，对配电网进行潮流计算(Use of PQ decomposition method for the electric power flow calculation system)
- 2012-04-26 09:42:35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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(Oxford)-Computer-Arithmetic--Algorithms-a-Hardwa
Computer Arithmetic (press 2000)
- 2012-01-27 09:45:29下载
- 积分：1
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UMAT beginning
begining of UMAT in abaqus
- 2017-09-11 20:50:56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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[二次开发] ABAQUS-UMAT
说明： ABAQUS 的二次开发,详细注释说明，自学ABAQUS的二次开发(ABAQUS secondary development, detailed notes, self-study ABAQUS secondary development)
- 2020-01-01 22:55:42下载
- 积分：1
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yxyffbc(dsb)
有限元方法fortran编程，包括二维三维线性非线性静态分析、稳定流瞬时流分析、振动问题、特征值问题、并行计算等。包含了所有子程序。(Finite element method fortran programming, including 2D and 3D linear and nonlinear static analysis, steady flow transient flow analysis, vibration problems, eigenvalue problems, parallel computing. Contains all subroutines.)
- 2013-11-24 23:02:01下载
- 积分：1
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thin_plate
薄板样条，一种很好的拟合曲线的方法。是最近比较常用的拟合方法。(thin plate spline is so nice fitting method.
Features:
(1) support arbitrary control points
(2) allow regularization
(3) estimate the warp parameters from corresponding pairs
)
- 2009-03-13 15:32:13下载
- 积分：1
