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【CSharp】 TMD DL : 0: 好东西进入文件夹routersim2，运行SRSINSTA.EXE安装Routersim2.0。再把crack文件夹下的文件复制到安装目录下覆盖原文件，并运行shkccna2.exe。至此破解完成，2.0版已经可以使用，若要升级到2.1版，请将upto2.1目录内文件复制到安装目录下覆盖原文件，并再次运行shkccna2.exe。这样2.1版就可使用了。...能够管理图书馆的书目-good things into folders routersim2 running SRSINSTA.EXE Routersim2.0 installation. Then crack folder of documents copied to the installation directory coverage under the original document, and run the shkccna2.exe. Thus crack completed version 2.0 can use, in order to upgrade to version 2.1, I would be grateful if upto2.1 directory to copy the installation directory coverage under the original document, and once again running shkccna2.exe. This version 2.1 can be used. ... To manage the library programs.
Update : 2008-10-13 Size : 838 Publisher : 肥婆婷
【Crack Hack】软件破解入门 DL : 0: 很多人都想学学做cracker，好象破了一个程序很风光的，人人都很佩服。可是做一个cracker其实很累，需花费大量的时间，而且经常会碰壁，三五天毫无进展是极为平常的事情。　　做cracker的五个必要条件是: 1. 知识 2. 经验 3. 感觉 4. 耐心 5. 运气。　　如果你刚开始学crack，也许你遇到不少麻烦，并且有点想退却，其实你不要着急，只要你认真学习，成功就在眼前。没有人是生来就什么都会的，如果你有问题，就大胆的去问你周围的人，多来我主页论坛请教。计算机水平不高怎么办？没关系，我也不是学计算机的，我自己的专业与电脑不沾边。只要努力学习就能成功。　　所谓知识只要你肯学就可以了，刚入门时如你没汇编知识是不行的，你要掌握一下这门编程语言，能看懂就能上手，但是你想很顺手的话，除了把汇编掌握好，还有编程的基本功夫，保护模式等技术。　　经验是跟你破解软件时间，掌握程度有关，接触多了，拿到一软件应该知道用哪种法比较省事，比较有把握。-many people would like to learn to do cracker, as if breaking a procedure very proud that everyone admire. But doing a cracker actually very tired, and need to spend a lot of time, but often run into snags, March 5 days with no progress is extremely commonplace. Do cracker necessary conditions for the five are : 1. Knowledge 2. Experience 3. Feeling 4. Patience 5. Luck. If you have just started to learn the crack, you may encounter a lot of trouble, and want to retreat a bit, actually, you should not worry, if you seriously study and success is at hand. Nobody is born on what would, if you have problems, boldly ask the people around you, the more I ask Home Forum. High-level computer how to do? Okay, I was not a computer, I own a computer professional and ask. If learning can be successful
Update : 2008-10-13 Size : 1957797 Publisher : 王辉
【Exploit】软件破解入门与解密教程 DL : 0: 作为一个电脑爱好者，相信手头一定有不少酷软，但往往这些软件有各种限制，所以你是不是常常为了一个小小的注册码，而经常头痛呢？是不是为了找到一个软件的注册码而费尽心机呢？但大家是否想过自己来破解软件得出注册码？　　你也许会说太难了，网上找一个注册码得了，如果你是用自己的技术把软件注册了，一定会有另一番美妙感受。况且一些软件不一定在刚想用的时后，网上就能找到注册码的。其实破解的乐趣远不在此。　　当你去破一个软件时，那种对知识的渴望，对技术的追求，将使迫使你勤奋的学习，来不断的完善自己的知识。特别是对电脑的了解，会有一个质的飞跃。-as a computer enthusiasts, I believe many will hand Cool soft, but often these software restrictions, so you are not always to a little license and the recurrent headaches? It is not designed to find a software license and scheming? But do we ever thought of his own software to decode the data derived license? You might say, too hard, to find the Internet had a license, if you use their own software technology has registered, there will be another round wonderful feeling. Moreover, the software is not necessarily wanted to use the time, the Internet will be able to find the license. In fact, far from the fun of crack here. When you break a software, kind of thirst for knowledge, the pursuit of technology that will force you to study hard, to continuously improve their knowledge. Especially
Update : 2008-10-13 Size : 1384421 Publisher : 陈锐
【Crack Hack】 acseespasssee DL : 0: acseespasssee破解器，解压后即可使用，无密码。很简单，看后即明白。-acseespasssee crack device that can be unpacked use, without passwords. Very simple, do understand once.
Update : 2008-10-13 Size : 328008 Publisher : cdy
【Windows Develop】读取密码输入框中的数据 DL : 0: 读取密码输入框中的信息，起编程思想是读取键盘的敲入值，从而进行破解-Reading the data in the password input box, the first idea is to crack the password by reading the stroke in key value from the keyboard.
Update : 2008-10-13 Size : 15175 Publisher : 王军
【Other resource】 (0596)UNIX系统安全工具 DL : 0: 本书详细介绍了UNIX系统安全的问题、解决方法和策略。其内容包括：帐号安全及相关工具Crack；日志系统的机制和安全性，日志安全工具Swatch；如何测试系统的弱点，系统弱点的测试工具COPS和Tiger；网络安全的概念；提高网络安全性的防火墙等。本书语言简洁，层次清晰，是UNIX系统管理员的必备参考书。-the book details the UNIX system security problems, solutions and strategies. Its contents include : account safety and related tools Crack; Log systematic mechanism and safety, log Swatch security tools; How to test weaknesses in the system, weaknesses in the system testing tools COPS and Tiger; The concept of network security; Improve network security, such as firewalls. The book concise language and the level of clarity is a UNIX system administrator essential reference books.
Update : 2008-10-13 Size : 7136275 Publisher : 刘磊
【Graph program】基于数字图像处理的表面裂纹检测算法 DL : 0: 摘要：本文提出了一种基于数字图像处理技术的表面裂纹检测算法。运用这种算法能精确的检测裂纹的位置、长度等特征。将这种裂纹检测算法运用到裂纹自动检测系统以及裂纹扩展行为监测中不仅大大降低了劳动时间和劳动强度，而且提高了测量的准确性。-Abstract : This paper presents a digital image processing technology of surface crack detection algorithm. Using this algorithm can detect the precise location of the crack length feature. Such use of crack detection algorithm to automatically detect cracks and crack propagation system monitoring behavior not only greatly reduce the labor time and labor intensity, but also improve the measurement accuracy.
Update : 2008-10-13 Size : 244676 Publisher : 蓝婧
【Linux-Unix】 ldap口令破解 DL : 0: ldap口令破解，环境： linux , unix ，用gcc编译，效率最高的ldap口令破解器，代码价值很高,编译米面用makefile-ldap password is decoded and the Environment : linux, unix, using gcc compiler, the most efficient ldap crack passwords, code for high-value, compile rice with makefile
Update : 2008-10-13 Size : 8016 Publisher : bei
【Other resource】 CRACK教程 DL : 0: 黑客教程，对学习黑客的朋友很有帮助，希望大家喜欢
Update : 2008-10-13 Size : 3861640 Publisher : 阳光
【Other resource】 9连环 DL : 0: 这是关于古代9连环问题的求解过程，包括安装跟坼卸-This is a chain of nine ancient problem solving process, including the installation of crack with dumping
Update : 2008-10-13 Size : 7142 Publisher : 混子杨
【Game Hook Crack】 SGLViewer_Source DL : 0: 传奇世界SGL文件破解,源代码,对传奇世界SGL文件结构分析， PASCAL 语言的-Legends of the World SGL crack documents, source code, the legendary World SGL structure of the document, the language PASCAL
Update : 2008-10-13 Size : 14390 Publisher : 陆尧
【Editor】 VC助手 DL : 0: Visual.Assist.X.v10.5.1724+Crack
Update : 2009-11-12 Size : 4785046 Publisher : youlingyo
【Program registrar】 Transport Stream Analyser 1.73 DL : 0: Transport Stream Analyser 1.73 破解的 Transport Stream Analyser 1.73 安装时的KEY: 137-164-168-150 安装完后，把压缩包内破解过的TransportStreamAnalyser.exe文件，覆盖安装目录下的原始文件即可。执行时，会弹出一个要求输入KEY的对话框，直接点OK就可以进入了。
Update : 2009-12-08 Size : 2751180 Publisher : luzip@126.com
【Program registrar】 IAR EV5.20的破解码 DL : 0: IAR EV5.20的破解码,可以应用到IAR EWARM-EV V5.20 使用方法： 1：首先用iarid.exe产生ID 2：使用iarkg.exe产生lic文件，如：iarkg 0x12345>crack.txt
Update : 2009-04-25 Size : 341678 Publisher : 985562380
【Program registrar】微软IDE增强代码提示.rar DL : 0: 解压后安装，crack文件夹里有破解的DLL文件，把VA_X.dll拷贝至安装目录就行了。 VS 2008也支持的哦，十周年纪念版，重拳出击！弥补Visual Studio的不足。
Update : 2009-05-08 Size : 5476305 Publisher : jjjcwp@126.com
【Sniffer Package capture】 Mifare NXP crack source code DL : 0: Update : 2010-11-07 Size : 554 Publisher : randomalg@gmail.com
【SourceCode】 rvds4cr DL : 1: 将所有文件解压到RVDS的安装目录下（如：f:\ARM\)，执行crack.bat license是rvds.dat,把别忘了替换网卡MAC 会有fail提示，正常。只能执行一次，多了会出问题
Update : 2010-12-16 Size : 20359801 Publisher : coolhaihai
【Program registrar】 mastercam x4 crack DL : 0: Update : 2011-03-01 Size : 55144 Publisher : cwykey@ms1.hinet.net
【Develop Tools】 VA_X_10.6.1842.crack.rar DL : 0: Update : 2011-05-14 Size : 38739 Publisher : liangzhiyang
【Algorithm】 hyplas DL : 11: ************************************************************************ * * * * * THIS IS THE H Y P L A S 2.0 README FILE * * ----------------- * * * * HYPLAS is a finite element program for implicit small and large * * strain analisys of hyperelastic and elasto-plastic two-dimensional * * and axisymmetric solids * * * * HYPLAS v2.0 is the companion software to the textbook: * * EA de Souza Neto, D Peric & DRJ Owen. Computational Methods for * * Plasticity: Theory and Applications. Wiley, Chichester, 2008. * * (www.wiley.com/go/desouzaneto) * * * * Copyright (c) 1998-2008 EA de Souza Neto, D Peric, D.R.J. Owen * *----------------------------------------------------------------------* * File last updated: 18 October 2008 * * * * This file belongs in the directory ../HYPLAS_v2.0 * ************************************************************************ * * * I M P O R T A N T * * * * READ SECTIONS 0 TO 3 OF THIS FILE CAREFULLY BEFORE ATTEMPTING * * TO COMPILE AND RUN THE PROGRAM HYPLAS ON YOUR COMPUTER !! * * * * THE AUTHORS DO NOT GUARANTEE THAT ANY SUGGESTIONS/INSTRUCTIONS * * GIVEN IN THIS README FILE WILL WORK ON ANY PARTICULAR OPERATING * * SYSTEM. IF YOU DECIDE TO FOLLOW ANY SUGGESTIONS/INSTRUCTIONS * * GIVEN HERE YOU MUST DO SO AT YOUR OWN RISK. * * * * * * BUG REPORTS: Please send bug reports to * * * * hyplas_v2.0@live.co.uk * * * * Messages sent to the authors' personal email addresses * * will NOT be answered. * ************************************************************************ This file contains the following sections: 0. Copyright statement and disclaimer 0.(a) Copyright statement 0.(b) Disclaimer 0.(c) Conditions of use 1. Introduction 1.(a) Note on portability 2. Compiling and running HYPLAS 2.(a) Memory requirements 2.(b) Testing a newly compiled executable 3. The HYPLAS directory tree 4. Cross-referencing between the source code and the textbook 5. HYPLAS error messaging 6. Further remarks on HYPLAS ************************************************************************ 0. COPYRIGHT STATEMENT AND DISCLAIMER ================================== 0.(a) Copyright statement ------------------- You may only use this program for your own private purposes. You are not allowed, in any circumstances, to distribute this program (including its source code, executable and any other files related to it, either in their original version or any modifications introduced by you, the authors or any other party) in whole or in part, either freely or otherwise, in any medium, without the prior written consent of the copyright holders. 0.(b) Disclaimer ---------- This program (including its source code, executable and any other files related to it) is provided "as is" without warranty of any kind, either expressed or implied, including, but not limited to, any implied warranties of fitness for purpose. In particular, THIS PROGRAM IS BY NO MEANS GUARANTEED TO BE FREE FROM ERRORS. This program (or any modification incorporated to it by you, the authors or any other party) will run entirely at your risk. The results produced by this program are in no way guaranteed to be fit for any purpose. Under no circumstances will the authors/copyright holders be liable to anyone for damages, including any general, special, incidental or consequential damages arising from the use or inability to use the program (including, but not limited to, loss or corruption of data, failure of the program to operate in any particular way as well as damages arising from the use of any results produced by the program for any purpose). 0.(c) Conditions of use ----------------- You may only use this program if you fully understand and agree with the terms of the above disclaimer. You must not use this program if you do not agree with or do not understand (fully or in part) these conditions of use. 1. INTRODUCTION ============ HYPLAS is a finite element code for small and large strain analysis of hyperelastic and elasto-plastic solids. Most procedures implemented in HYPLAS are described in detail in its companion textbook: EA de Souza Neto, D Peric & DRJ Owen. Computational Methods for Plasticity: Theory and Applications. Wiley, Chichester, 2008 (www.wiley.com/go/desouzaneto). 1.(a) Note on Portability ------------------- HYPLAS has been written in standard ANSI FORTRAN 77. Currently, the only known (and deliberate) exceptions to the FORTRAN 77 ANSI standard are the instructions: INCLUDE '' used in many routines to include the HYPLAS database files (common blocks and global variables), and; CALL GETENV('HYPLASHOME',HYPLASHOME) used in subroutine "ERRPRT" (file ../HYPLAS_v2.0/src/GENERAL/errprt.f). This instruction inquires the name of the system environment variable HYPLASHOME and writes it on the character string HYPLASHOME. This instruction is NOT part of the ANSI FORTRAN 77 standard, but seems to work in most currently available FORTRAN 77 compilers. 2. COMPILING AND RUNNING H Y P L A S ================================== The HYPLAS source code is stored in directory ../HYPLAS_v2.0/src/ (../HYPLAS_v2.0/ being the current directory) and all its subdirectories. To generate an executable file, you just need to compile the FORTRAN source files: ../HYPLAS_v2.0/src/hyplas.f and ../HYPLAS_v2.0/src/*/*.f together. We recommend that the executable HYPLAS be stored in the directory ../HYPLAS_v2.0/bin to which the environment variable HYPLASHOME should be set (see below how to set a system environmental variable). WINDOWS (R) systems ------------------- On Microsoft Windows(R) systems, HYPLAS has been successfully compiled using Intel Visual Fortran Compiler(R) integrated with Microsoft Visual Studio(R). Here you only need to create a project that contains all Fortran source files mentioned above as well as the include files ..\HYPLAS_v2.0\src\*.INC On a Windows XP system, the system environment variable HYPLASHOME can be set as follows: 1. Open a File Manager 2. Right-click on the "My Computer" icon 3. Select "Properties" on the drop-down menu 4. A new window named "System Properties" will pop-up. Here select the "Advanced" tab. 5. On the "Advanced" tab, click the "Environment Variables" button. 6. A new window titled "Environment Variables" will pop-up. Here click the button "New" in the "System Variables" section of the window. 7. A new window will pop-up titled "New System Variable". Here you should fill the fields "Variable name" and "Variable Value", respectively, with HYPLASHOME and the path name (in full) of the directory ..\HYPLAS_v2.0\bin. 8. Press "OK" on the relevant pop-up windows. 9. The next time the computer is REBOOTED, this variable will be set to the correct path and HYPLAS should be able to find the error messages file ERROR.RUN if required. UNIX/LINUX systems ------------------ In a UNIX/LINUX operating system using a C-shell, for instance, the HYPLASHOME environment variable should be set with the command: setenv HYPLASHOME where here denotes the full path to the directory ../HYPLAS_v2.0/bin. To compile HYPLAS (from directory ../HYPLAS_v2.0/src) with a FORTRAN 77 compiler such as g77, you can use the command: g77 -o ../bin/hyplas hyplas.f */*.f Note that the executable file "hyplas" will be stored in the directory ../HYPLAS_2.0/bin (i.e. the directory set in the HYPLASHOME environment variable). Alternatively, you may use the Makefile provided (with suitable modifications, if needed) to create the HYPLAS executable. IMPORTANT: Before generating a HYPLAS executable, read Sections 2.(a) and 2.(b) below. 2.(a) Memory Requirements ------------------- HYPLAS memory requirements depend on the array dimensioning parameters set in files: ../HYPLAS_v2.0/src/ ELEMENTS.INC GLBDBASE.INC MATERIAL.INC MAXDIM.INC Files ELEMENTS.INC, GLBDBASE.INC and MATERIAL.INC contain parameters which are associated with the currently implemented finite elements and materials. DO NOT MODIFY THEM ! unless you are absolutely sure of what you are doing (only developers coding new elements or new material models/analysis types may need to modify them by changing the existing dimensioning parameters and/or including new parameters). The ONLY dimensioning file that can be safely modified by the average user is the file MAXDIM.INC This file contains the array dimensioning parameters related to the maximum permissible dimension of problems to be analysed by HYPLAS. These parameters include the maximum number of nodes, elements, element groups, etc. If necessary, CHANGE THESE PARAMETERS TO SUIT YOUR PROBLEM SIZE/MEMORY REQUIREMENTS before compiling HYPLAS. 2.(b) Testing a newly compiled executable ----------------------------------- After you have successfully compiled the HYPLAS source code and created an executable file, the next step is to run some tests to verify that HYPLAS is working well. To do this, proceed as follows: The directory ../HYPLAS_v2.0/book_examples/data_files contains a series of data files named .dat of benchmarked examples described in the companion textbook. The corresponding (benchmarked) result files are in the directory ../HYPLAS_v2.0/book_examples/result_files This directory contains a series of result files named .res generated with the current version of HYPLAS on a tested platform. All these files have been named such that their names start with the textbook section number where the corresponding example is described. For instance, files 14_9_2_tresca.dat and 14_9_2_tresca.res refer to a problem described in section 14.9.2 of the textbook, and so on. To check that HYPLAS is working well on your platform, after compiling HYPLAS, run the program HYPLAS for the examples of files .dat and compare the newly generated results .res with their benchmarked counterparts (of the same filename) in the result_files directory. To run an example, execute HYPLAS and use the keyboard to enter the name of the corresponding data file in full (including the extension .dat). To compare the benchmarked .res files against their newly generated you may proceed as follows: 1. On MICROSOFT WINDOWS systems - Here we have successfully used the software "ExamDiff" (the task was made particularly easy by selecting "View" and then the "Show Differences Only" option - this refers to version 1.8 of this software). 2. On UNIX/LINUX systems - Here we use the "diff" command from a shell window (and set the option to ignore blank spaces). A shell script may be used to perform this task automatically (including running HYPLAS and checking for result file differences) for all benchmarked examples provided. IMPORTANT: THE ONLY ACCEPTABLE DIFFERENCES BETWEEN A THE NEWLY GENERATED RESULT FILES AND THEIR BENCHMARKED COUNTERPARTS ARE THE DIMENSIONING PARAMETERS (FROM FILE MAXDIM.INC) USED TO COMPILE THE NEW EXECUTABLE (THESE PARAMETERS ARE PRINTED RIGHT AT THE BEGINNING OF THE RESULT FILES) AND NUMERICAL DIFFERENCES IN RESULTS DUE TO NUMERICAL "ROUNDING-OFF" (THESE ARE VERY SMALL DIFFERENCES THAT DEPEND ON THE PRECISION OF ARITHMETIC OPERATIONS IN THE PLATFORM USED). ALSO NOTE THAT THE EXAMPLES OF THE COMPANION TEXTBOOK DO NOT COVER ALL FEATURES OF HYPLAS. HENCE THIS TEST DOES NOT GUARANTEE THAT EVERYTHING IS WORKING PROPERLY. 3. THE H Y P L A S DIRECTORY TREE ================================ 3.(a) Summary ------- ../ HYPLAS_v2.0/ bin/ book_examples/ data_files/ result_files/ man/ html/ src/ CRYSTAL/ DAMAGE/ DAMAGED_ELASTIC/ DRUCKER_PRAGER/ ELASTIC/ ELEMENTS/ GENERAL/ MATERIALS/ MATHS/ MOHR_COULOMB/ OGDEN/ TRESCA/ VON_MISES/ VON_MISES_MIXED/ 3.(b) Description ----------- The HYPLAS program directory tree is organised as follows: ../HYPLAS_v2.0/ (this directory) This is the HYPLAS root directory, where the HYPLAS directory tree starts. ../HYPLAS_v2.0/bin/ This directory contains the file ERROR.RUN where most HYPLAS error/warning messages are. IMPORTANT: the environment variable HYPLASHOME should be set to this directory. Otherwise, HYPLAS will not find its error/warning messages when required. We also recommend that the EXECUTABLE of HYPLAS be stored in this directory. ../HYPLAS_v2.0/book_examples/ This directory has the following subdirectories: ../HYPLAS_v2.0/book_examples/data_files ../HYPLAS_v2.0/book_examples/result_files Refer to Section 2.(b) above for further details. ../HYPLAS_v2.0/man/ This is the HYPLAS documentation/manuals directory. It contains the following files: input_man.txt - A concise input data manual for HYPLAS in ASCII format; hyplas_calltree.txt - Contains a flowgraph (shows the call tree) of HYPLAS in ASCII-format. Note: calls to function subprograms are not included in this flowgraph; and the subdirectory: ../HYPLAS_v2.0/man/html This directory contains the hypertext (HTML) format Fortran source code and of manual pages of the entire HYPLAS program. Manual pages with descriptions of each function/subprogram including their argument list are linked to their corresponding HTML-format source code. This allows the user the navigate through the HYPLAS source code using a web browser. To start at the main program, use your web browser to open the file hyplas.html. This facility should be helpful to those trying to understand the flow of program HYPLAS. ../HYPLAS_v2.0/src/ This directory (and its subdirectories) contains the Fortran source code of HYPLAS. The files containing the sources are named following the standard practice: .f where is the name of the FORTRAN procedure (subroutine, function subprogram, etc.) whose source code is in file .f. The source code of the HYPLAS main program is in file hyplas.f and the HYPLAS database (COMMON blocks, array dimensioning parameters and other global parameters) is coded in the "include files" ELEMENTS.INC GLDBASE.INC MATERIAL.INC MAXDIM.INC in this directory. In addition, this directory contains a file named "Makefile" (UNIX-LINUX Release only) which may be used for compiling and linking HYPLAS in UNIX/LINUX systems. The subdirectories of ../HYPLAS_v2.0/src are as follows: ../HYPLAS_v2.0/src/CRYSTAL Contains the source code of all procedures related to the finite strain single crystal plasticity model implemented in HYPLAS. ../HYPLAS_v2.0/src/DAMAGE Source files of the procedures related to the Lemaitre ductile damage model implementation. ../HYPLAS_v2.0/src/DAMAGED_ELASTIC Source files of the procedures related to the damaged elasticity model with crack closure effect. ../HYPLAS_v2.0/src/DRUCKER_PRAGER Source files of the procedures related to the implemented Drucker-Prager plasticity model. ../HYPLAS_v2.0/src/ELASTIC Source files of the procedures related to the linear elasticity model (Hencky model under large strains) implemented. ../HYPLAS_v2.0/src/ELEMENTS Source files of the element interfaces and element-related procedures. ../HYPLAS_v2.0/src/GENERAL Source files of general procedures. ../HYPLAS_v2.0/src/MATERIALS Source files of the material interfaces. ../HYPLAS_v2.0/src/MATHS Source files of the mathematical procedures. ../HYPLAS_v2.0/src/MOHR_COULOMB Source files of the procedures related to the implemented Mohr-Coulomb plasticity model. ../HYPLAS_v2.0/src/OGDEN Source files of the procedures related to the implemented Ogden hyperelasticity model. ../HYPLAS_v2.0/src/TRESCA Source files of the procedures related to the implemented Tresca plasticity model. ../HYPLAS_v2.0/src/VON_MISES Source files of the procedures related to the implemented von Mises plasticity model with isotropic hardening. ../HYPLAS_v2.0/src/VON_MISES_MIXED Source files of the procedures related to the implemented von Mises plasticity model with mixed isotropic/kinematic hardening. 4. CROSS-REFERENCING BETWEEN THE SOURCE CODE AND THE TEXTBOOK ========================================================== Many references are made in the textbook to various subprograms of HYPLAS. These are usually made when a particular procedure described in the text is implemented in the program. The reader should refer to the textbook index. Also, a substantial number of comment lines have been added to the source code of HYPLAS with reference to sections, figures, boxes, etc of the textbook related to the part of the code in question. Such references are usually displayed after the word "REFERENCE:" (in capitals) on commented lines. Searching for this word will take you to the line of code where the particular routine has a reference to the textbook. NOTE: Occasional references to other textbooks/journal papers are also made following the word "REFERENCE:" on commented lines. 5. HYPLAS ERROR MESSAGING ====================== Most error/warning messages issued by HYPLAS are in the ASCII-format file ERROR.RUN (kept in the HYPLASHOME directory - ../HYPLAS_v2.0/bin). All such error/warning messages have an identification code (e.g. ED0015) which is printed both to the standard output (this is usually the computer screen) and to the relevant results file. If you wish to find where in the source code a particular message is being issued, then perform a search for the corresponding message identification code in the entire source code of HYPLAS. 6. FURTHER REMARKS ON HYPLAS ========================= 6.(a) Program efficiency THIS SECTION IS OF INTEREST ONLY TO THOSE WANTING TO MAKE HYPLAS RUN FASTER. It is particularly stressed in the textbook that this program has not been designed having efficiency in mind (refer to Section 5.1.2 of the textbook). Its structure has been designed mainly to illustrate in a relatively clear manner the computer implementation of the techniques and algorithms described in the text, with a particular view to the implementation of solid constitutive models and finite elements. For those who are especially interested in the speed of the code, there are a few tips that could help in this direction. Unfortunately, these involve modifications to the source code which is probably most appropriate to readers with a good level of experience in finite element programming. To those with this particular interest, we can suggest the following: (i) The use of faster linear solvers This is probably the change that would result in a greater gain in efficiency. The Frontal Method adopted in subroutine FRONT (file ../HYPLAS_v2.0/src/GENERAL/front.f) has been designed originally to save memory (back in the days when computer memory was severely limited). There are currently a vast number of methodologies which focus on speeding up the linear solution, in addition to reducing memory storage requirements (which is a particularly important issue in the solution of large scale problems). Some of these are extensions/refinements of the original Frontal solver. We remark that a number of such procedures (with their respective source codes) are available (conditions may apply) from the LAPACK (Linear Algebra PACKage - http://www.netlib.org/lapack) repository or from the HSL Library (http://www.cse.cse.scitech.ac.uk/nag/hsl). For the reader interested in gaining speed, we would recommend the replacement of the existing solver of FRONT by a faster one. We remark though that this is a substantial programming task. Another aspect here is the fact that computing times in FRONT are directly linked to the frontwidth of the system which, in the present version of HYPLAS is fixed and depends, for a given mesh, on how the degrees of freedom are numbered (node numbering). The incorporation of a frontwidth optimiser (which re-numbers the degrees of freedom in order to minimise the frontwidth) in FRONT could produce some good savings in computing times. Such savings become particularly noticeable in larger problems where the original node numbering produces an excessively large frontwidth. (ii) Material-specific computations The issues pointed out here affect only the computing times for specific material models and are expected to have a much lower impact in overall speed than the linear solver issue discussed above. Some of the material model-specific computations carried out in HYPLAS could be made a bit faster. For example, for isotropic models whose stress update is carried out in the principal stress space (such as the Tresca and Mohr-Coulomb models - see routines SUTR and SUMC, files ../HYPLAS_v2.0/src/TRESCA/sutr.f and ../HYPLAS_v2.0/MOHR_COULOMB/sumc.f, respectively) the spectral decomposition of the stress in carried out in the state update update routine and then repeated in the corresponding routine for computation of the consistent tangent operator (refer to files ../HYPLAS_v2.0/src/TRESCA/cttr.f and ../HYPLAS_v2.0/src/MOHR_COULOMB/ctmc.f, respectively, for the Tresca and Mohr-Coulomb plasticity models). Some savings in computing time can be achieved here by storing the stress eigenprojection tensors (these can be stored as state variables) during the execution of the state updating and then retrieving them later for use in the computation of the consistent tangent operator. This change can be incorporated to the code relatively easily. The computation of the exponential map and is derivative for the single crystal plasticity model (routines EXPMAP, file ../HYPLAS_v2.0/src/CRYSTAL/expmap.f and DEXPMP, file ../HYPLAS_v2.0/src/CRYSTAL/dexpmp.f) is carried out in three dimensions (these routines have been adapted from an earlier three-dimensional code). To improve efficiency, these can be adapted to work only in two-dimensional problems by removing the unnecessary operations related to the third dimension. 6.(b) Output of nodal averaged values The reader should be aware that the way in which nodal averaged values of stresses and other variables are calculated in HYPLAS is very basic (and rudimentary). This feature of the program is made available only to help those interested in producing contour plots, etc from results presented in HYPLAS result files and should be useful in many circumstances of interest. This facility has in fact been used in producing many of the figures presented in the textbook. But note, for example, that the values of incremental plastic multipliers for plasticity models may take (inadmissible) negative values when extrapolated from Gauss-point to nodes and averaged. We remark that more sophisticated and refined techniques of transferring Gauss point values of variables to nodal points and obtaining the corresponding smoothed field are available in the current literature. These fall outside the scope of the companion textbook of HYPLAS.
Update : 2011-07-29 Size : 11008084 Publisher : gtcewli3

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