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FVM-Couette
说明： 采用有限体积算法一阶迎风型离散格式对二维 Couette流动进行数值求解.(The first-order upwind discrete scheme of the finite volume algorithm is used to solve the two-dimensional gouette flow)
- 2020-04-20 17:19:04下载
- 积分：1
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1111
通过对钢轨和车轮的ansys有限元建模，分析在钢轨的接头处的动力学特性。(Rail and wheel ansys finite element modeling, analysis of the dynamics of the rail joints.)
- 2012-08-16 08:56:38下载
- 积分：1
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EMD
利用emd算法解决经验模式分解的一些存在的端点效应问题。 有效的解决了问题。(Using emd algorithm to solve some of the empirical mode decomposition end effects exist. Effective solution to the problem.)
- 2020-10-19 16:27:25下载
- 积分：1
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Map-projection
1、根据所给的中国版图数据
绘制显示基于北京54坐标系的经纬度数据
编写兰勃特投影转换程序，转换上述数据，并显示
编写墨卡托投影转换程序，转换上述数据，并显示
同时，要绘制相对应的经纬网格，网格间距5度
2、根据所给的世界版图数据
绘制显示基于WGS84坐标系的经纬度数据
编写墨卡托投影转换程序，转换上述数据，并显示
计算北京(116.4，39.8)到巴黎(2.2, 48.52)的大圆轨迹，并显示
同时，要绘制相对应的经纬网格，网格间距5度(1, according to the Chinese territory given display data drawn based on latitude and longitude data write Beijing 54 coordinate system Lambert projection conversion process, the conversion of the data, and displays the write Mercator projection conversion process, the conversion of the data, and display the same time, Draw the corresponding latitude and longitude grid, the grid spacing of 5 degrees 2, according to the world map rendering display data written to the Mercator projection based on latitude and longitude data conversion program WGS84 coordinate system, the conversion of the data, and displays the calculation Beijing (116.4, 39.8) to Paris (2.2, 48.52) the great circle track and display the same time, to draw the corresponding latitude and longitude grid, the grid spacing of 5 degrees)
- 2015-12-08 21:51:30下载
- 积分：1
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ANSYS-UMAT
ansys或ABAQUS二次材料属性的开发,实现材料非线性.(ansys or ABAQUS attributes the development of secondary materials, the realization of material nonlinearity.)
- 2021-04-05 17:09:03下载
- 积分：1
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Numerical_Recipes
《数值分析方法库_第三版
》本书选材内容丰富，包括了当代科学计算过程中涉及的大量内容：求特殊函数值、随机数、排序、最优化、快速傅里叶变换、谱分析、小波变换、统计描述和数据建模、偏微分议程数值解、若乾编码算法和任意精度计算等。本书科学性和实用性统一，不仅对每种算法进行了数学分析和比较，而且根据作者经验对算法给出了评论和建议，并在此基础上提供了用C++语言编写的实用程序。
(《Numerical Recipes 3rd Edition: The Art of Scientific Computing》, Do you want easy access to the latest methods in scientific computing? This greatly expanded third edition of Numerical Recipes has it, with wider coverage than ever before, many new, expanded and updated sections, and two completely new chapters. The executable C++ code, now printed in color for easy reading, adopts an object-oriented style particularly suited to scientific applications. Co-authored by four leading scientists from academia and industry, Numerical Recipes starts with basic mathematics and computer science and proceeds to complete, working routines. The whole book is presented in the informal, easy-to-read style that made earlier editions so popular. Highlights of the new material include: a new chapter on classification and inference, Gaussian mixture models, HMMs, hierarchical clustering, and SVMs a new chapter on computational geometry, covering KD trees, quad- and octrees, Delaunay triangulation, and)
- 2020-12-02 20:09:25下载
- 积分：1
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mulDNewton_H
同伦方程组求非线性方程组所有解，自编程序，很好用(Homotopy equations for all solutions of nonlinear equations, written procedures, very good use)
- 2008-12-21 09:46:35下载
- 积分：1
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Newmark
说明： 工程中微分方程数值积分经常需要使用的Newmark法(Differential equations numerical integration project often requires the use of the Newmark method)
- 2008-09-03 22:02:30下载
- 积分：1
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UEL_XFEM
本例是研究断裂问题的ABAQUS 子程序代码，使用Fortran语言编辑，研究扩展有限元的同志们可以借鉴一下。(This example is the study of fracture problems ABAQUS subroutine code, Fortran language editing, extended finite element study comrades can learn it.)
- 2016-04-23 16:47:07下载
- 积分：1
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非线性振动
非线性振动.pdf 刘延柱编写
恢复力与位移不成正比或阻尼力不与速度一次方成正比的系统的振动。尽管线性振动理论早已相当完善,在工程上也已取得广泛和卓有成效的应用，但在实际问题中，总有一些用线性理论无法解释的现象。一般说，线性模型只适用于小运动范围，起出这一范围，按线性问题处理就不仅在量上会引起较大误差，而且有时还会出现质上的差异，这就促使人们研究非线性振动。(Nonlinear Vibration. Compilation of PDF Liu Yanzhu)
- 2020-11-23 20:09:34下载
- 积分：1
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