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HartleyTransform
The Fast Hartley Transform (FHT) implementation.
- 2011-05-24 21:39:11下载
- 积分：1
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FDTD for optical waveguides.rar
本程序是采用FDTD算法结合PML吸收边界，对对称三层平板光波导的模式场仿真(This program uses FDTD algorithm and PML absorbing boundary to simulate the mode field of symmetrical three-layer planar optical waveguide.)
- 2020-09-10 16:08:00下载
- 积分：1
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simple
流体力学SIMPLE算法（C语言编程实现）需自己设定边界条件(SIMPLE algorithm)
- 2013-09-06 19:00:42下载
- 积分：1
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MCZTFFT
说明： CZT和FFT的C语言实现代码，能有效滤除谐波，噪声。获得信号的频率，是一种良好的频率测量算法。(CZT and FFT of the C language code, can effectively filter out harmonics and noise. Access to the signal frequency, is a good algorithm for frequency measurement.)
- 2020-11-19 19:29:38下载
- 积分：1
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waveinFFT_demo
录音程序，音频录音fft程序，并加界面显示(radio record code)
- 2016-03-01 00:29:08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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Dipole-source-grid-method
改进了跨声速偶极子网格法（TDLM），且在颤振计算中能自动求颤振点速度，从而较大地提高了计算速度，并有利于方法在较大马赫数及较大减缩频率时的应用。(Dipole source grid method)
- 2021-01-13 18:58:47下载
- 积分：1
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digitalfiltercode
圆周卷积滤波器，可清晰见到实际滤波器的算法(Circular convolution filter, can clearly see that the actual filter algorithm)
- 2007-12-10 09:14:25下载
- 积分：1
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FEM_plane
有限元法计算平板受集中载荷的程序，二维四边形网格(finite element method concentrated load plate by the procedure, two-dimensional rectangular grid)
- 2007-05-29 14:35:35下载
- 积分：1
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桥墩模型
说明： 基于OpenSEES平台的一个桥墩算例，可以供大家参考(An example of Bridge Pier Based on OPENSEES platform can be used for reference)
- 2021-04-23 16:38:48下载
- 积分：1
