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Z88 The compact Finite Element System * Version 13.0 Z88 A modular, compact und fast Finite Element Program in ANSI-C for all Windows and UNIX computers Both the UNIX and the Windows versions are Freeware and are protected by the GNU General Public License Composed and edited by Professor Dr. Frank Rieg Lehrstuhl Konstruktionslehre und CAD (Chair for Engineering Design and CAD) University of Bayreuth, Germany All rights reserved by the editor © Version 13.0 December 2008 2 WELCOMES TO Z88
     Z88   The compact Finite Element System   *   Version 13.0     Z88  A modular, compact und fast Finite Element Program in ANSI-C  for all Windows and UNIX computers Both the UNIX and the Windows versionsare Freeware and are protected by theGNU General Public LicenseComposed and edited byProfessor Dr. Frank Rieg Lehrstuhl Konstruktionslehre und CAD(Chair for Engineering Design and CAD)University of Bayreuth, Germany All rights reserved by the editor  ©  Version 13.0 December 2008 2  WELCOMES TO Z88!    Z88 for UNIX and Windows is Freeware and is protected by the GNU General Public License, see next pages. Z88 is compact and fast and was developed for PCs initially. Today, Z88 runs properly onPCs with LINUX and Windows starting with Windows95 to Vista and UNIX computers,however. Simple to compile and to install. Handling is simple. Z88 comes with contextsensitive online-help and a user-friendly command processor. Successfully proved bycountless Windows-, UNIX- and LINUX installations worldwide. For static calculations inmechanical engineering and building & construction industries. Absolutely transparent for theuser as input and output are handled by text files.Z88 has deliberately been designed as a compact and fast system. Thus, its use is restricted tostatic calculations. Z88 does not want to compete with professional FEA programs forworkstation or mainframes which can do really everything, but are hardly payable andcomplicated to operate. While you are still puzzling about installation and start of someprograms of this genre also in the PC class, you have already calculated the first exampleswith Z88. And the online-help is always only one keystroke or mouse click away. The Z88system may operate with English or German language depending on your setting (ENGLISHor GERMAN) in the file Z88.DYN.The new version 13 looks quite similar to version 13 but the plot program is enhanced andtwo sparse matrix solvers with improved speed are included. In addition, now complete 64 bitsupport is supplied for Windows, LINUX and UNIX. Thus, you may compute FE structureswith millions of DOF with an ordinary PC. Z88 for Windows comes ready-to-run for 32 bitXP and Vista and for 64 bit Vista and Windows server, too. The LINUX version should becompiled on your system, however, and uses now GTK+ instead of Motif.If you already have FEA experiences, you can start at once. If you are a beginner in this area,i would recommend secondary literature. Here are a few choices: ã    Zienkiewicz, O.C.; Taylor, R.L.: The Finite Element Method, Volumes 1-3, 5 th edition, Butterworth- Heinemann and John Wiley & Sons, 2000 ã    Bathe,K.J.: Finite Elemente Procedures. Prentice Hall, 1995 ã    Rieg,F.; Hackenschmidt, R.: Finite Elemente Analyse für Ingenieure. Hanser- Verlag, München Wien 2009, 3rd edition (in German language) If you’ll improve Z88 please give me your feedback. If you want to compile Z88 for UNIXany C compiler along with a GTK+ and a OpenGL library should work fine. If you want tocompile Z88 for Windows any kind of C or C++ compiler should work fine - i've tested thefree  LCC  and the C/C++ compilers from Microsoft and Intel.And because Z88 is bound to the GNU General Public License you are to present yourimprovements and modifications to the public including the source code - that's a point of honor. Promote the idea of the free software according to GNU-GPL! Please see www.z88.de.Professor Dr. Frank Rieg Bayreuth, December 2008Lehrstuhl Konstruktionslehre und CAD(Chair for Engineering Design and CAD)University of Bayreuth, Germanyfrank.rieg@uni-bayreuth.dewww.uni-bayreuth.de/departments/konstruktionslehre  3  GNU GENERAL PUBLIC LICENSE Version 2, June 1991Copyright (C) 1989, 1991 Free Software Foundation, Inc.675 Mass Ave, Cambridge, MA 02139, USAEveryone is permitted to copy and distribute verbatim copies of this license document, but changing it is notallowed.PreambleThe licenses for most software are designed to take away your freedom to share and change it. By contrast, theGNU General Public License is intended to guarantee your freedom to share and change free software--to makesure the software is free for all its users. This General Public License applies to most of the Free SoftwareFoundation's software and to any other program whose authors commit to using it. (Some other Free SoftwareFoundation software is covered by the GNU Library General Public License instead.) You can apply it to yourprograms, too.When we speak of free software, we are referring to freedom, not price. Our General Public Licenses aredesigned to make sure that you have the freedom to distribute copies of free software (and charge for this serviceif you wish), that you receive source code or can get it if you want it, that you can change the software or usepieces of it in new free programs; and that you know you can do these things.To protect your rights, we need to make restrictions that forbid anyone to deny you these rights or to ask you tosurrender the rights. These restrictions translate to certain responsibilities for you if you distribute copies of thesoftware, or if you modify it.For example, if you distribute copies of such a program, whether gratis or for a fee, you must give the recipientsall the rights that you have. You must make sure that they, too, receive or can get the source code. And youmust show them these terms so they know their rights.We protect your rights with two steps: (1) copyright the software, and (2) offer you this license which gives youlegal permission to copy, distribute and/or modify the software.Also, for each author's protection and ours, we want to make certain that everyone understands that there is nowarranty for this free software. If the software is modified by someone else and passed on, we want itsrecipients to know that what they have is not the srcinal, so that any problems introduced by others will notreflect on the srcinal authors' reputations.Finally, any free program is threatened constantly by software patents. We wish to avoid the danger thatredistributors of a free program will individually obtain patent licenses, in effect making the programproprietary. To prevent this, we have made it clear that any patent must be licensed for everyone's free use ornot licensed at all.The precise terms and conditions for copying, distribution and modification follow.GNU GENERAL PUBLIC LICENSETERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION0. This License applies to any program or other work which contains a notice placed by the copyright holdersaying it may be distributed under the terms of this General Public License. The Program , below, refers to anysuch program or work, and a work based on the Program means either the Program or any derivative work under copyright law: that is to say, a work containing the Program or a portion of it, either verbatim or withmodifications and/or translated into another language. (Hereinafter, translation is included without limitation inthe term modification .) Each licensee is addressed as you .Activities other than copying, distribution and modification are not covered by this License; they are outside itsscope. The act of running the Program is not restricted, and the output from the Program is covered only if itscontents constitute a work based on the Program (independent of having been made by running the Program).Whether that is true depends on what the Program does.1. You may copy and distribute verbatim copies of the Program's source code as you receive it, in any medium,provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and4
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