ANSYS Mechanical Tutorials

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ANSYS Mechanical Tutorials

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  • ANSYS Mechanical Tutorials

    Release 16.0ANSYS, Inc.January 2015Southpointe

    2600 ANSYS DriveCanonsburg, PA 15317 ANSYS, Inc. is

    certified to ISO9001:2008.

    ansysinfo@ansys.comhttp://www.ansys.com(T) 724-746-3304(F) 724-514-9494

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    2014-2015 SAS IP, Inc. All rights reserved. Unauthorized use, distribution or duplication is prohibited.

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    Published in the U.S.A.

  • Table of Contents

    Tutorials ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vActuator Mechanism using Rigid Body Dynamics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Nonlinear Static Structural Analysis of a Rubber Boot Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Cyclic Symmetry Analysis of a Rotor - Brake Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Steady-State and Transient Thermal Analysis of a Circuit Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51Delamination Analysis using Contact Based Debonding Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61Interface Delamination Analysis of Double Cantilever Beam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77Fracture Analysis of a 2D Cracked Specimen using Pre-Meshed Crack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97Fracture Analysis of a Double Cantilever Beam (DCB) using Pre-Meshed Crack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107Fracture Analysis of an X-Joint Problem with Surface Flaw using Internally Generated Crack Mesh . . . . 113Using Finite Element Access to Resolve Overconstraint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121Simple Pendulum using Rigid Dynamics and Nonlinear Bushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153Track Roller Mechanism using Point on Curve Joints and Rigid Body Dynamics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159Index .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167

    iiiRelease 16.0 - SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information

    of ANSYS, Inc. and its subsidiaries and affiliates.

  • Release 16.0 - SAS IP, Inc. All rights reserved. - Contains proprietary and confidential informationof ANSYS, Inc. and its subsidiaries and affiliates.iv

  • TutorialsThis section includes step-by-step tutorials that represent some of the basic analyses you can performin the Mechanical Application. The tutorials are designed to be self-paced and each have associatedgeometry input files. You will need to download all of these input files before starting any of the tutorials.

    vRelease 16.0 - SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information

    of ANSYS, Inc. and its subsidiaries and affiliates.

  • Release 16.0 - SAS IP, Inc. All rights reserved. - Contains proprietary and confidential informationof ANSYS, Inc. and its subsidiaries and affiliates.vi

  • Actuator Mechanism using Rigid Body Dynamics

    This example problem demonstrates the use of a Rigid Dynamic analysis to examine the kinematicbehavior of an actuator after moment force is applied to the flywheel.

    Features Demonstrated

    Joints

    Joint loads

    Springs

    Coordinate system definition

    Body view

    Joint probes

    Setting Up the Analysis System

    1. Create the analysis system.

    Start by creating a Rigid Dynamics analysis system and importing geometry.

    a. Start ANSYS Workbench.

    b. In the Workbench Project page, drag a Rigid Dynamics system from the Toolbox into the ProjectSchematic.

    c. Right-click the Geometry cell of the Rigid Dynamics system, and select Import Geometry>Browse.

    d. Browse to open the Actuator.agdb file. A check mark appears next to the Geometry cell in theProject Schematic when the geometry is loaded. This file is available on the ANSYS Customer Portal;go to http://support.ansys.com/training.

    2. Continue preparing the analysis in the Mechanical Application.

    a. In the Rigid Dynamics system schematic, right-click the Model cell, and select Edit. The MechanicalApplication opens and displays the model.

    1Release 16.0 - SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information

    of ANSYS, Inc. and its subsidiaries and affiliates.

    http://support.ansys.com/training
  • The actuator mechanism model consists of four parts: (from left to right) the drive, link, actuator,and guide.

    b. From the Menu bar , select Units>Metric (mm, kg, N, s, mV, mA).

    Note

    Stiffness behavior for all geometries are rigid by default.

    3. Remove surface-to-surface contact.

    Rigid dynamic models use joints to describe the relationships between parts in an assembly. Assuch, the surface-to-surface contacts that were transferred from the geometry model are not neededin this case. To remove surface-to-surface contact:

    a. Expand the Connections branch in the Outline, then expand the Contacts branch. Highlight all of thecontact regions in the Contacts branch.

    b. Right-click the highlighted contact regions, then select Delete.

    Note that this step is not needed if your Mechanical options are configured so that automaticcontact detection is not performed upon attachment.

    4. Define joints.

    Joints will be defined in the model from left to right as shown below, using Body-Ground andBody-Body joints as needed to solve the model.

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    Actuator Mechanism using Rigid Body Dynamics

  • Prior to defining joints, it is useful to select the Body Views button in the Connections toolbar. TheBody Views button splits the graphics window into three sections: the main window, the referencebody window, and the mobile body window. Each window can be manipulated independently. Thismakes it easier to select desired regions on the model when scoping joints.

    To define joints:

    a. Select the drive pin face and link center hole face as shown below, then select Body-Body>Revolutein the Connections toolbar.

    3Release 16.0 - SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information

    of ANSYS, Inc. and its subsidiaries and affiliates.

  • b. Select the drive center hole face as shown below, then select Body-Ground>Revolute in the Connec-tions toolbar.

    c. Select the link face and actuator center hole face as shown below, then select Body-Body>Revolutein the Connections toolbar.

    d. Select the actuator face and the guide face as shown below, then select Body-Body>Translational inthe Connections tool