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Chapter One

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Title: Chapter One


1
Introduction
  • Chapter One

2
Welcome!
  • Welcome to the ANSYS Workbench Simulation
    introductory training course!
  • This training course covers the basics of using
    Simulation in performing structural and thermal
    analyses.
  • It is intended for all new or occasional
    Simulation users, regardless of the CAD software
    used.
  • Although some aspects of interfacing with ANSYS
    will be covered, this course is not intended for
    users wishing to work primarily in the
    traditional ANSYS environment. Those users
    should consider taking Introduction to ANSYS
    Parts 1 and 2 Training courses.
  • This course covers the Simulation module of ANSYS
    Workbench. DesignModeler, DesignXplorer, FE
    Modeler, and CFX-Mesh modules of ANSYS Workbench
    are covered in separate classes.

3
Course Objectives
  • To teach the basics of using Simulation in the
    following areas
  • General understanding of the user interface, as
    related to geometry import, meshing, application
    of loads and supports, and postprocessing
  • Procedure for performing FEA simulations,
    including linear static, modal, and harmonic
    structural analyses and nonlinear steady-state
    thermal analyses
  • Utilizing parameters for what-if scenarios
  • Interfacing with the ANSYS solver for more
    advanced functionality

4
Course Materials
  • The Training Manual you have is an exact copy of
    the slides.
  • Workshop descriptions and instructions are
    included in the Workshop Supplement.
  • Copies of the workshop files are available (upon
    request) from the instructor.
  • Several advanced training courses are available
    on specific topics. See the training course
    schedule on the ANSYS homepage http//www.ansys.co
    m/ under Training Services.
  • DesignModeler and DesignXplorer Training Courses
    are also available, which cover usage of these
    other Workbench modules.

5
A. About ANSYS, Inc.
  • ANSYS, Inc.
  • Developer of ANSYS family of products
  • Global Headquarters in Canonsburg, PA - USA
    (south of Pittsburgh)
  • Development and sales offices in U.S. and around
    the world
  • Publicly traded on NASDAQ stock exchange under
    ANSS

6
ANSYS Family of Products
  • ANSYS, Inc. Family of Products include the
    following
  • ANSYS Advanced nonlinear mechanical and
    multiphysics FEA solution capabilities
  • ANSYS Workbench Complete environmentfor
    geometry modeling, mesh manipulation,structural/t
    hermal analysis, and optimization,which is
    tightly integrated with CAD packages
  • CFX State-of-the-art CFD solvers, including
    the coupled, parallel CFX-5 solver
  • ICEM CFD Powerful meshing tools with general
    pre- and post-processing features,including ICEM
    CFD for generating complexCFD grids and
    AIEnvironment for creatingwith sophisticated
    structural FEA meshes

7
ANSYS Support Distributors
  • ANSYS Support Distributors (ASDs)
  • Sales and support network for ANSYS
  • Over 75 offices worldwide
  • Local expertise for ANSYS consulting and training

8
ANSYS Support Coordinators
  • ANSYS Support Coordinator (ASC)
  • Contact for ANSYS at your company site
  • Focal point for ANSYS correspondence software
    updates, error notices, newsletter and other
    mailings, etc.
  • For more information about ANSYS and the company
  • www.ansys.com
  • Where youll find the Customer Portal, providing
    Service Pack updates, New Features training
    material, etc.
  • On-line documentation
  • Training manuals from other ANSYS courses

9
Technical Support
  • ANSYS, Inc. and ASDs provide a wide range of
    technical support, training, and consulting
    services.
  • Technical support, software updates, and access
    to the Customer Portal webpage are provided to
    companies who are under TECS (Technical
    Enhancements and Customer Support) maintenance
  • Your Support Provider (ASD) _____________________
    ___
  • Technical Support Phone _________________________
    _____
  • Technical Support Email ________________________
    ______

10
B. ANSYS Workbench Overview
  • What is ANSYS Workbench?
  • ANSYS Workbench is a new-generation solution from
    ANSYS that provides powerful methods for
    interacting with the ANSYS solver functionality.
    This environment provides a unique integration
    with CAD systems, and your design process,
    enabling the best CAE results.
  • ANSYS Workbench is comprised of five modules
  • Simulation for performing structural and thermal
    analyses using the ANSYS solver
  • CFX-Mesh for generating a CFX-Pre mesh for the
    CFX-5 solver
  • DesignModeler for creating and modifying CAD
    geometry to prepare the solid model for use in
    Simulation or CFX-Mesh
  • DesignXplorer and DesignXplorer VT for
    investigating the effect of variations input to
    the response of the system
  • FE Modeler for translating a Nastran mesh for use
    in ANSYS

11
ANSYS Workbench Overview
12
Simulation Overview
  • Analysis types available in Simulation
  • Linear Stress
  • Determines deflections, stresses, factors of
    safety, etc. based on standard strength of
    materials concepts under static loading
  • Modal
  • Determines natural frequencies of a system (free
    vibration), including the effects of loading on
    a pre-stressed structure.
  • Heat Transfer
  • Steady-state and transient
  • thermal analyses to solve for
  • temperature field and heatflux.
    Temperature-dependent conductivity and
    convection allowed. Thermal-stress
    analysissupported as well.

The list here reflects analysis capabilities
possible within the Simulation GUI. Note,
however, that the ANSYS license used dictates
what functionality is available to the user.
13
Simulation Overview
  • Analysis types supported by Simulation (contd)
  • Harmonic
  • Determines structural response of system under
    sinusoidal excitation as a function of frequency.
  • Linear Buckling
  • Determines failure load or safety factor for
    buckling and its buckling mode shapes.
  • Shape Optimization
  • Indicates areas of possible volume reduction
    based on load paths through the part using
    Topological Optimization technology.
  • Nonlinear Structural
  • Calculates deflections and stresses of system
    under static loading, accounting for large
    deflection effects, plasticity, and contact
    nonlinearities.

The list here reflects analysis capabilities
possible within the Simulation GUI. Note,
however, that the ANSYS license used dictates
what functionality is available to the user.
14
Simulation Overview
  • Although the Simulation GUI will be discussed in
    detail in Chapters 2 3, it is useful to note
    that it is Tree-Driven

Depending on what is highlighted on the Outline
Tree, the available options in the Context
Toolbar and Details View will change. The
Graphics Window will also update to reflect the
part of the branch selected. The Tree represents
the different aspects of the simulation. All
Workbench modules are Tree-Driven, so navigation
through the GUI is done through selecting
different branches of the Tree.
15
Simulation Overview
  • The user can also access regular ANSYS
    functionality not otherwise directly accessible
    from within Simulation
  • Command objects allow users to stay in the
    Simulation environment but access advanced
    features via ANSYS APDL. The information, stored
    in a branch, can be parameterized and is reused
    for each analysis.
  • The mesh and loads can also be transferred to
    regular ANSYS easily for further modeling,
    useful for userscomfortable in the regular
    ANSYSenvironment
  • Both of the above topics are addressed inthe
    Simulation Advanced Training Notes

16
Product Configuration
  • Types of licenses available for Simulation
  • ANSYS DesignSpace Entra
  • All DesignSpace capabilities but for parts only.
  • ANSYS DesignSpace
  • Structural capabilities are linear static, modal,
    and buckling analyses of assemblies. Thermal and
    shape optimization included.
  • ANSYS Professional
  • Linear structural (including harmonic) and
    thermal analyses
  • ANSYS Structural
  • All structural capabilities, including linear and
    nonlinear
  • ANSYS Mechanical (including ANSYS Multiphysics)
  • All structural and thermal capabilities
  • (Other ANSYS licenses are supported for meshing
    only)

17
Product Configuration
  • Add-on licenses for Simulation
  • Fatigue Module
  • Advanced Structural Meshing Module
  • Supported Operating Systems
  • 32-bit MS Windows 2000, XP Home, XP Professional
  • 64-bit SUN Solaris 8
  • 64-bit HP HP-UX B.11.0
  • FlexLM network licensing used for all ANSYS and
    ANSYS Workbench products

18
Product Configuration
  • Because each product has different capabilities,
    when applicable, features discussed will have a
    table showing supported licenses in the
    lower-left corner of the page
  • x means full support
  • / means partial support
  • blank means no support
  • For ANSYS users, the details of underlying ANSYS
    commands used by Simulation are placed in an
    appendix. These pages are labeled with

19
CAD System Support
  • Simulation Geometry Interface support is below
  • The Geometry Interface license can be run in
    reader mode for all licenses. The Geometry
    Interface can be run in plug-in mode for the CAD
    software listed under Associative
  • Detailed CAD support listing in Simulation online
    help

20
C. Starting Simulation
  • There are two methods of launching Simulation
  • Directly from CAD system
  • Launch Simulation from supported CAD systems
    under ANSYS 9.0 gt Simulation
  • From within ANSYS Workbench
  • Launch Workbench in Windows via Start Menu gt
    Programs gt ANSYS 9.0 gt ANSYS Workbench

21
Option 1 Directly from CAD
  • If Simulation is launched directly from a
    supported CAD system, the active part/assembly
    will be brought into Simulation automatically
    upon invoking Simulation from the ANSYS 9.0
    pull-down menu, as illustrated below

22
Option 2 From Workbench
  • Otherwise, a user may launch Workbench first
  • From the main Start page, select Simulation
    icon to bring up a blank Simulation session
  • From the Context toolbar, select the active
    part/assembly under the Geometry branch to
    bring in the CAD geometry

23
Launching Simulation
  • For supported CAD systems, either method shown on
    the previous slides may be used to start
    Simulation.
  • For neutral files (e.g., CATIA, IGES, SAT (ACIS),
    or Parasolid), the user must implement Option 2
    and launch Workbench first. After a blank
    Simulation database is opened, the static file
    can be referenced via the Context Toolbar, under
    Geometry gt From File

24
D. Workbench Projects
  • When ANSYS Workbench is launched, a Start page
    will be displayed, similar to the one shown below

25
Options Page
  • Before entering Simulation, the current and
    default licenses may be chosen through the
    Options button
  • This is useful for organizations with multiple
    types of ANSYS licenses (e.g., DesignSpace,
    Structural, Mechanical, etc.)
  • Preferences for all Workbench modules can also be
    controlled through this dialog box

26
Workbench Databases
  • There are various types of files used by
    Workbench, each differentiated by the file
    extension
  • .wbdb Workbench Project database, which keeps
    track of all of the different types of Workbench
    databases in a Project
  • .dsdb Simulation database, which has all the
    information necessary to perform a structural or
    thermal analysis in Simulation
  • .agdb DesignModeler database, containing
    geometry data for use with Simulation or CFX-Mesh
  • .dxdb DesignXplorer/DesignXplorer VT database,
    which investigate relationships between input and
    output parameters
  • .cmdb CFX-Mesh database, containing a mesh
    prepared for import to CFX-Pre and to be solved
    with CFX-5
  • .fedb FE Modeler database, which has mesh
    information from a Nastran or Simulation model,
    used to convert to ANSYS

27
Workbench and Simulation
  • The Workbench database is simply a directory of
    a Project. A Project can be thought of as a
    collection of different CAD or Workbench files,
    which are associated together.
  • Whenever a Simulation database (.dsdb) is
    created, there will be an associated Workbench
    database (.wbdb) generated as well.
  • Saving the Workbench database is not required,
    but it is helpful in keeping track of various
    analyses, especially if multiple geometries are
    analyzed or if further analysis is performed with
    DesignXplorer.

28
Workbench and Simulation
  • If the Workbench Project tab is selected, the
    various Workbench databases and CAD geometries
    will be listed

29
DesignModeler Overview
  • DesignModeler (DM) is a component of ANSYS
    Workbench.
  • A CAD-like parametric modeler with analysis
    modeling goals
  • 2D, 3D ,line and surface modeling capability
  • Performs unique geometry modification
    capabilities for simulation
  • Feature Simplification
  • Spot Welds
  • Split Surfaces
  • Surface Model Extraction
  • Planar Body Extraction
  • Beam Modeling
  • Enclosure Operation

30
. . . DesignModeler Overview
  • Much of the DM GUI is functionally the same as
    that of Simulation.
  • A complete DesignModeler Training course is
    available.

31
Navigating Between Modules
  • The topmost tabs allow users to navigate between
    opened Workbench modules

32
Exiting Workbench
  • When exiting Workbench, the user will be prompted
    to save any files that have changed since the
    last save
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