matlab有限元网格划分程序 DistMesh is a simple MATLAB code for generation of unstructured triangular and tetrahedral meshes. It was developed by Per-Olof Persson (now at UC Berkeley) and Gilbert Strang in the Department of Mathematics at MIT. A detailed description of the program is provided in our SIAM Review paper, see documentation below. One reason that the code is short and simple is that the geometries are specified by Signed Distance Functions. These give the shortest distance from any point in space to the boundary of the domain. The sign is negative inside the region and positive outside. A simple example is the unit circle in 2-D, which has the distance function d=r-1, where r is the distance from the origin. For more complicated geometries the distance function can be computed by interpolation between values on a grid, a common representation for level set methods. For the actual mesh generation, DistMesh uses the Delaunay triangulation routine in MATLAB and tries to optimize the node locations by a force-based smoothing procedure. The topology is regularly updated by Delaunay. The boundary points are only allowed to move tangentially to the boundary by projections using the distance function. This iterative procedure typically results in very well-shaped meshes. Our aim with this code is simplicity, so that everyOne can understand the code and modify it according to their needs. The code is not entirely robust (that is, it might not terminate and return a well-shaped mesh), and it is relatively slow. However, our current research shows that these issues can be resolved in an optimized C++ code, and we believe our simple MATLAB code is important for demonstration of the underlying principles. To use the code, simply download it from below and run it from MATLAB. For a quick demonstration, type "meshdemo2d" or "meshdemond". For more details see the documentation.
标签： matlab有限元网格划分程序
上传时间： 2015-08-12
上传用户：凛风拂衣袖
信息隐藏软件Outguess的源码 Outguess主要用于JPEg图象的steganography，本软件来自Outguess的作者Provos，欢迎大家下载研究-Information Hiding Outguess source software is mainly used Outguess JPEG image steganography, this software from Outguess author of Provos, welcomed everyOne to download research
标签： outguess
上传时间： 2017-03-07
上传用户：Liquor
The working title of this book was Channel Equalization for everyOne. Channel equalization for everyOne? Well, for high school students, channel equalization provides a simple, interesting example of how mathematics and physics can be used to solve real-world problems.
标签： Equalization Channel
上传时间： 2020-05-26
上传用户：shancjb
W abooklikethistogether,manypeoplewhoneverhope to see their namesinprint get involved and provide alot of help. I wouldliketogivecreditwherecreditisdueandacknowledgethose people here. Firstandforemost,atleasthalfofthecreditforthisbookneedstogotomy wife,BrigitteKilger-Mattison. Brigittewasresponsible for editingall the mate- rial, creating all the graphics, and coordinating all the efforts of everyOne else involvedinthisproject.Thisbookcouldnothavebeencompletedwithouther painstaking attention to detail, her dedication, and her loyalty.
标签： Data Warehousing Mining and
上传时间： 2020-05-27
上传用户：shancjb
A few years ago I stood before an audience at a customer’s facility explaining the merits of micromachining technology. The small conference room was packed, and all ears were attentive. everyOne was eager to learn about thismysteriousbuzzword, “MEMS.”Although many in the audience were nodding in a sign of comprehension, the glazed lookson their facesbetrayed them. Thisexperience isnot unique, but one that isrepeated frequently in auditoriumsaround the world.
上传时间： 2020-06-06
上传用户：shancjb
With the continued growth in the world's population, there is a need to ensure availability of enough food to feed everyOne. Advances in science and technology have helped not only to increase food production, but also to reduce food wastage. However, the latter has the potential to be improved to a significant extent through appropriate matching of supply and demand, and with proper handling during storage and transit. Given the amount of food wastage that occurs after a food item leaves the “farm” on its way to the “fork,” and the availability of means to reduce such wastage, there really is no excuse for feigned ignorance.
标签： Automation Industry Network Sensor RFID Food and the in
上传时间： 2020-06-08
上传用户：shancjb
VIP专区-嵌入式/单片机编程源码精选合集系列（95）资源包含以下内容：1. Embedded Systems Building Blocks(E) uC/OS-II的好书.2. zigbee的说明文档!看起来很方便!希望对大家有帮助!.3. PCI总线配置说明,希望给PCI驱动开发的朋友一些帮助..4. Keil UserGuide ,Keil C51编译器使用中文手册.5. 语音芯片ISD1790的中文 使用手册！.6. 介绍FPGA/CPLD设计的指导性原则.7. Allegro、drl文件浏览软件。 用于硬件电路设计后期的软件处理。 界面美化版。.8. NETLink-PRO-ETH_EN profibus develop document!.9. 2005年微软移动与嵌入式开发者大会的文稿。.10. ssd1926 驱动3.5TFT程序.11. 型号:OCMJ8X15B(不带触摸屏) MCU :89C52 功能:演示.12. 型号:4X8B(不带触摸屏) MCU :89C52 功能:演示.13. 给大家提供一个在inram/exram中调试的示例,在周公的lpc2200上调试过..14. TI原厂的TMS32C6713开发板的原理图.15. 嵌入式程序员面试的宝典。包括了面试中常见的问题和应聘者应该具备的知识。.16. SD卡源程序 SD卡源程序 SD卡源程序.17. uip-1.0,give everyOne who want..18. 实验目的 1．培养学生综合掌握软件开发过程的能力。 2．培养学生综合运用面向对象设计方法的能力.19. Mini51Board编程模板源程序,需要的可以.20. 使用MC9S12DG128芯片.21. 介绍无线嵌入式操作系统Tinyos,该系统专门为无线传感系统开发而设计.22. 一篇关于CC2430的ZigBee协议的构建,该文介绍了如何利用CC2430RF模块实现字节级,数据包级的无线发送及路由.23. 嵌入式实时操作系统教材1.24. 航显系统中LED显示软件应用.25. FAT和yaffs文件系统－－－学习文件系统的有帮助.26. 用C语言实现高效嵌入式编程.27. 嵌入式系统中的软件设计技术──C语言程序设计.28. EC++与C++嵌入式系统编程比较研究.29. 可编程控制器S7-200多个演示程序.30. ITK software guide. 很详细的关于ITK用法介绍。.31. i2c-tools,读取i2c设备的工具.32. 提供79l06的使用手册及其资料查询 7906.33. 提供79l06的使用手册及其资料查询 7906.34. 一个虚拟仪器终端.35. PCI协议的一部分翻译； PDF格式； 效果一般。.36. 可编程任意波形信号发生器multisim8仿真.37. 555定时电路的单稳态工作方式multisim8仿真。.38. 任意进制计数器的仿真分析multisim8.39. Direct Digital Synthesis (DDS),最好用的可步进的数字频率发生器的方法.40. uC_GUI的部分说明手册的中文翻译.
标签： 机械设计
上传时间： 2013-04-15
上传用户：eeworm
