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  • ANSYS Mechanical Tutorials

    Release 16.0ANSYS, Inc. January 2015Southpointe

    2600 ANSYS Drive Canonsburg, PA 15317 ANSYS, Inc. is

    certified to ISO 9001:2008.

    ansysinfo@ansys.com http://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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  • Table of Contents

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

    iii Release 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 information of ANSYS, Inc. and its subsidiaries and affiliates.iv

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

    v Release 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 information of 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 kinematic behavior 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 Project Schematic.

    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 the Project 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 Mechanical Application opens and displays the model.

    1 Release 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. As such, the surface-to-surface contacts that were transferred from the geometry model are not needed in this case. To remove surface-to-surface contact:

    a. Expand the Connections branch in the Outline, then expand the Contacts branch. Highlight all of the contact 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 automatic contact 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 and Body-Body joints as needed to solve the model.

    Release 16.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information of ANSYS, Inc. and its subsidiaries and affiliates.2

    Actuator Mechanism using Rigid Body Dynamics

  • Prior to defining joints, it is useful to select the Body Views button in the Connections toolbar. The Body Views button splits the graphics window into three sections: the main window, the reference body window, and the mobile body window. Each window can be manipulated independently. This makes 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>Revolute in the Connections toolbar.

    3 Release 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&g