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General Tips (35 entries)
 
A brief overview of the condition number
  Aaron Acton (ANSYS, Inc.)
  "This article presents an overview of the condition number for a matrix and the potential effect of ill conditioning on the solution of a system of linear equations. The information is intended to be general, although specifi c information relevant to finite-element analysis is also included. Vector and matrix norms are introduced before de fining the condition number, and the choice of matrix norm in the calculation of the condition number is discussed. A method of estimating the condition number is also provided, including a sample implementation in the ANSYS Parametric Design Language (APDL)."
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Average Rating: 9.5 (11 votes)  
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ANSYS Distributed Solver Setup Tutorial
  (ANSYS, Inc.)
  This is a document for ANSYS 8.1 distributed solvers and how to set them up, specifically for Windows and Linux.
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Average Rating: 8.8 (58 votes)  
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ANSYS File Unit Numbers
  (ANSYS, Inc.)
  In some cases, ANSYS error messages may reference a file unit number when a file cannot be read/written. Knowing what file unit numbers correspond to which files can be helpful in determining the problem.
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Average Rating: 9.4 (9 votes)  
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ANSYS Function Boundary Conditions
  Achuth Rao (ANSYS, Inc.)
  When using the ANSYS Function Editor and Function Loader to define Function Boundary Conditions, a special type of table is used.
This document outlines the syntax of the function loading table.
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Average Rating: 9.8 (23 votes)  
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ANSYS Short Course
  Tim Langlais (University of Minnesota)
  A short course on ANSYS, using ANSYS 5.4.
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Average Rating: 10.0 (2 votes)  
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Basics of Element Tables in ANSYS [PDF]
  Sheldon Imaoka (CSI)
  Short description on the usage and features of element tables in ANSYS.
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Average Rating: 9.6 (49 votes)  
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Compiling UPFs and Creating Customized ANSYS Executables [PDF]
  Sheldon Imaoka (ANSYS, Inc.)
  "ANSYS User Programmable Features (UPFs) are quite powerful means of customizing ANSYS beyond the scripting capabilities of the ANSYS Parametric Design Language (APDL). Writing one’s own constitutive models or complex loading functions or even creating a user-defined element are possible with UPFs.
Because some users may find it challenging to get started using UPFs, this memo hopes to discuss general issues related to compiling and linking a customized version of ANSYS for Windows and Linux environments."

(Week 51, week of 02/08/09)
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Average Rating: 10.0 (18 votes)  
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Converting piezoelectric data [PDF]
  Sheldon Imaoka (CSI)
  Conversion of material properties of piezoelectric ceramics (such as PZT) has caused many users confusion because of the difference between manufacturer-supplied data and the format required by ANSYS. This memo hopes to clarify this point and to provide users with information on conversion routines.
Accompanying Spreadsheet.
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Average Rating: 9.1 (41 votes)  
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Coupling low-order elements to high-order elements in ANSYS
  Aaron Acton
  "This article presents several methods for obtaining coupling at the interface between low- and high-order elements in ANSYS. This situation can be encountered when modelling the fluid-structure interaction between a solid domain, modelled with quadratic elements, and an acoustic fluid domain, modelled with linear elements. The two methods determined to be most suitable for achieving this coupling are by using either constraint equations or contact elements, both of which are likely more-robust methods than by simply attaching coincident nodes on matching meshes. Examples are provided for each case described herein, and the results from each are compared to the ANSYS 11.0 verification problem VM177."
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Average Rating: 9.0 (10 votes)  
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Creating a Helical Path
  Paul McGarry (Galway-Mayo Institute of Technology)
  "A step by step GUI method for creating a left or right-handed helix, in any axis, for any pitch or diameter."
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Average Rating: 7.1 (7 votes)  
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Creating Custom Animations [ZIP]
  Sheldon Imaoka (ANSYS, Inc.)
  "Animations are quite useful, both in presenting results of an analysis to others as well as obtaining better insight into the complex response of a system. While ANSYS has many built-in animation capabilities, sometimes, it may be necessary to create a macro for a customized animation. This memo covers one method of generating such animations."
(Week 1, week of 09/24/01.)
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Average Rating: 9.4 (31 votes)  
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Customizing GUI Behavior [PDF]
  Sheldon Imaoka (ANSYS, Inc.)
  "The /UIS and /MSTART commands provide the user with control over much of the GUI behavior. At 5.7 and 6.0, this has been extended to include control over the multilegend feature, background color, and mouse button assignment for dynamic rotations. Used in conjunction with the startxx.ans file, this allows the user to change GUI behavior in each ANSYS session."
(Week 6, week of 10/29/01.)
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Average Rating: 8.5 (10 votes)  
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Email Notification after Batch Run
  Darren Hodson (AstraZeneca)
  Information on automatic email notification after batch run is completed.
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Average Rating: 8.5 (13 votes)  
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Formatting output text of results (PRxxxx family of commands) [PDF]
  Sheldon Imaoka (CSI)
  This memo outlines some of the options available in ANSYS to produce and to format output listings: (1) the use of the /FORMAT statement with the PRxxxx series of commands and (2) the application of *VWRITE to create custom output.
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Average Rating: 9.8 (22 votes)  
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Full Graphics vs. PowerGraphics Comparison
  (CAEAI)
  A comprehensive comparison of Full Graphics vs. PowerGraphics and the effect of setting different options.
PDF file can also be downloaded here
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Average Rating: 10.0 (13 votes)  
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General ANSYS Tips (5.5)
  Carl Howard (University of Adelaide)
 
  • Where to get help
  • Insufficient disk space
  • Bulk compression mode
  • Choice of solver
  • Element Normals
  • Boolean operations on solid models
  • Meshing
  • Loading an array from a file
  • Using ETABLE and extracting the results to an array
  • Output when using the GUI
  • Generating editable WMF figures

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Average Rating: 9.2 (18 votes)  
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Improvements to Time-History Postprocessing at 6.0 [PDF]
  Sheldon Imaoka (ANSYS, Inc.)
  "This tips and tricks focuses on improvements at 6.0 on the Time-History postprocessor. (After I did this, I realized that a lot of this was already covered in the 6.0 Update seminar, but, oh well...)"
(Week 8, week of 11/12/01.)
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Average Rating: 8.5 (10 votes)  
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Manipulating FE Mesh [ZIP]
  Sheldon Imaoka (ANSYS, Inc.)
  "There are some special situations where a user may be required to generate or manipulate a database consisting mainly of finite element entities without solid model geometry. With some careful planning, dealing with mesh-only databases can prove to be relatively easy.

Typical situations that may arise include the following:
  • Import of mesh from Workbench Simulation or AI*Environment/ICEM CFD
  • Generation of repetitive geometry
This memo hopes to cover these situations in more detail."

(Week 31, week of 10/02/05.)
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Average Rating: 7.7 (15 votes)  
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Mass property calculation methods [PDF]
  Sheldon Imaoka (CSI)
  This memo covers some ways to determine mass properties of an ANSYS model.
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Average Rating: 9.6 (12 votes)  
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Meshing in Workbench [PDF]
  Sheldon Imaoka (ANSYS, Inc.)
  "Mechanical users have long enjoyed access to a variety of powerful meshing tools inside of ANSYS to generate high-quality shell, tetrahedral, and swept meshes. During the past several years, meshing in ANSYS Workbench Simulation has not only grown to encompass traditional meshing algorithms in ANSYS but has also developed many features requested by ANSYS users as well as integrated meshing technologies from ANSYS CFX and ANSYS ICEM CFD."
(Week 43, week of 03/02/08)
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Average Rating: 9.2 (24 votes)  
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Options for ADAMS.MAC
  Sheldon Imaoka (ANSYS, Inc.)
  The ADAMS.MAC macro enables ANSYS users to generate MNFs for flexible bodies for use in ADAMS. The user can set an environment variable MDI_MNFWRITE_OPTIONS that can reduce the size of the MNF, as well as provide other options also available through the ADAMS/Flex Toolkit The temporary directory where the MNF is written can also be specified by the user.
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Average Rating: 10.0 (3 votes)  
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Plotting Entities and Graphs in Multiple Windows [PDF]
  David Haberman (CSI)
  ANSYS 5.4 through 5.6 allow users to plot multiple entities (keypoints, lines, areas, volumes, nodes, and elements) in a given window. Prior to ANSYS 5.4, a user was required to plot entities on top of one another, like transparencies. Furthermore, multi-plotting also allows a user to generate graphs. The following memo discusses how the ANSYS multi-plotting feature works.
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Average Rating: 8.8 (4 votes)  
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POW2MAT
  Carl Olsard (noiseboard.com)
  "This is a simple program written in Turbo pascal which I find very useful for converting the output from ANSYS (prvar, prnsol, etc) into columns, while removing the headers at the start and between the page listings. The program is used at a DOS prompt and one types in: pow2mat col filein fileout , where col are the number of columns in the output, filein MUST have an extension .val and fileout WILL have an extension .txt. You do NOT type in the extensions, they are default. For example, you would type pow2mat 7 nodelist nodelist which would extract 7 columns from the file nodelist.val and write a stripped file called nodelist.txt . If you have several files to convert, you can use the DOS FOR command as follows:
FOR %I IN (*.val) DO pow2mat 3 %~nI %~nI"

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Average Rating: 10.0 (2 votes)  
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PowerGraphics vs. Full Graphics
  John Crawford (Honeywell)
  This article describes the differences and features of PowerGraphics vs. Full Graphics in ANSYS.
PDF Version Here.
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Average Rating: 8.9 (9 votes)  
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Short Truss Tutorial
  (Ryerson University)
  A lab exercise of doing a truss model in ANSYS 9.0.
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Average Rating: 6.7 (6 votes)  
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Small Pivot Terms
  David Gross (Dominion Engineering, Inc.)
  Description of what small pivot terms of the stiffness matrix are during solution. (From XANSYS posting)
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Average Rating: 9.3 (14 votes)  
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Sparse Solver (Memory and Performance Information)
  Gene Poole (ANSYS, Inc.)
  Discussion on memory requirements and performance of the sparse solver in ANSYS. (From XANSYS posting)
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Average Rating: 8.8 (4 votes)  
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Sparse Solver Improvements [PDF]
  Sheldon Imaoka (ANSYS, Inc.)
  "There have been various sparse solver improvements in each release of ANSYS. This memo hopes to cover some general information on the solvers available in ANSYS as well as performance improvements between ANSYS 5.6 and 6.0 related to linear static analyses."
(Week 4, week of 10/15/01.)
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Average Rating: 10.0 (1 vote)  
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Sparse vs. PCG Solvers
  Gene Poole (ANSYS, Inc.)
  Thorough discussion on the differences in performance between sparse and PCG solvers.
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Average Rating: 6.9 (8 votes)  
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Surface Effect Elements, General Overview
  Sheldon Imaoka (ANSYS, Inc.)
  An overview presentation and example workshop on generating surface effect elements. This is an old presentation I did at ANSYS 5.6.1, so if you use later versions of ANSYS, some of the menus and dialog boxes may have changed.
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Average Rating: 9.2 (6 votes)  
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Tabular Boundary Conditions and Function Editor at 6.0 [PDF]
  Sheldon Imaoka (ANSYS, Inc.)
  "This tips and tricks is an introductory memo on the use of tabular and function boundary conditions. The use of the Function Editor is also discussed."
(Week 9, week of 12/03/01.)
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Average Rating: 8.9 (28 votes)  
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Tip on Changing /TITLE in the results file (.rst)
  Bram Weisman (SBM Atlantia)
  Tip on changing the title (/TITLE) in the ANSYS results file using the MODIFY command.
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Average Rating: 0.0 (1 vote)  
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Unsymmetric MATRIX27
  Sheldon Imaoka (ANSYS, Inc.)
  There have been changes between ANSYS 10.0 and 11.0 regarding MATRIX27 unsymmetric input via real constants. This describes the change and provides a visual representation of the matrix input.
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Average Rating: 10.0 (2 votes)  
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Using Abbreviations to Customize the Toolbar [PDF]
  Sheldon Imaoka (ANSYS, Inc.)
  "The ANSYS Toolbar provides a useful means of accessing commonly-used functions, especially for users who use the GUI rather than typing in commands."
"This memo hopes to provide a brief introduction to the ANSYS Toolbar and, more importantly, how to assign macros or specific dialog boxes to the Toolbar buttons, including Fnc_ UIDL granules or ~eui Tcl/Tk dialog boxes."

(Week 3, week of 10/08/01.)
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Average Rating: 9.6 (12 votes)  
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Using Birth and Death with Multiframe Restart
  Odd Einar Lindøe (Imenco Engineering)
  Tips on using element birth and death (EKILL/EALIVE) with multiframe restart (RESCONTROL). By default, one cannot use birth and death with multiframe restart since the .rdb file is resumed (and the latest information is in .db, not .rdb). This tip shows some methods of using birth and death with multiframe restart.
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Average Rating: 9.6 (14 votes)  
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