Table of Contents

www.kxcad.net Home > CAE Index > ANSYS Index > Release 11.0 Documentation for ANSYS

1. Contact Overview

1.1. General Contact Classification

1.2. ANSYS Contact Capabilities

1.2.1. Surface-to-Surface Contact Elements

1.2.2. Node-to-Surface Contact Elements

1.2.3. 3-D Line-to-Line Contact

1.2.4. Line-to-Surface Contact

1.2.5. Node-to-Node Contact Elements

2. GUI Aids for Contact Analyses

2.1. The Contact Manager

2.2. The Contact Wizard

2.3. Managing Contact Pairs

3. Surface-to-Surface Contact

3.1. Using Surface-to-Surface Contact Elements

3.2. Steps in a Contact Analysis

3.3. Creating the Model Geometry and Mesh

3.4. Identifying Contact Pairs

3.5. Designating Contact and Target Surfaces

3.5.1. Asymmetric Contact vs. Symmetric Contact

3.6. Defining the Target Surface

3.6.1. Pilot Nodes

3.6.2. Primitives

3.6.3. Element Types and Real Constants

3.6.4. Using Direct Generation to Create Rigid Target Elements

3.6.5. Using ANSYS Meshing Tools to Create Rigid Target Elements

3.7. Defining the Deformable Contact Surface

3.7.1. Element Type

3.7.2. Real Constants and Material Properties

3.7.3. Generating Contact Elements

3.8. Set the Real Constants and Element KEYOPTS

3.8.1. Real Constants

3.8.2. Element KEYOPTS

3.8.3. Selecting a Contact Algorithm (KEYOPT(2))

3.8.4. Determining Contact Stiffness and Allowable Penetration

3.8.5. Choosing a Friction Model

3.8.6. Selecting Location of Contact Detection

3.8.7. Adjusting Initial Contact Conditions

3.8.8. Physically Moving Contact Nodes Towards the Target Surface

3.8.9. Determining Contact Status and the Pinball Region

3.8.10. Avoiding Spurious Contact in Self Contact Problems

3.8.11. Selecting Surface Interaction Models

3.8.12. Modeling Contact with Superelements

3.8.13. Accounting for Thickness Effect

3.8.14. Using Time Step Control

3.8.15. Using the Birth and Death Option

3.9. Controlling the Motion of the Rigid Target Surface (Rigid-to-Flexible Contact)

3.10. Applying Necessary Boundary Conditions to the Deformable Elements

3.11. Defining Solution and Load Step Options

3.12. Solving the Problem

3.13. Reviewing the Results

3.13.1. Points to Remember

3.13.2. Reviewing Results in POST1

3.13.3. Reviewing Results in POST26

4. Node-to-Surface Contact

4.1. The Node-to-Surface Contact Element

4.2. Performing a Node-to-Surface Contact Analysis

4.2.1. CONTA175 KEYOPTS

4.2.2. CONTA175 Real Constants

4.3. Using CONTA175 for Multiphysics Contact

5. 3-D Beam-to-Beam Contact

5.1. The 3-D Line-to-Line Contact Element

5.2. Modeling Beam-to-Beam Contact

5.3. Performing a 3-D Beam-to-Beam Contact Analysis

5.3.1. KEYOPTs and Real Constants

6. Line-to-Surface Contact

6.1. The 3-D Line-to-Surface Contact Element

6.2. Performing a 3-D Line-to-Surface Contact Analysis

6.2.1. KEYOPTs and Real Constants

7. Multiphysics Contact

7.1. Modeling Thermal Contact

7.1.1. Thermal Contact Behavior vs. Contact Status

7.1.2. Free Thermal Surface

7.1.3. Temperature on Target Surface

7.1.4. Modeling Conduction

7.1.5. Modeling Convection

7.1.6. Modeling Radiation

7.1.7. Modeling Heat Generation Due to Friction

7.1.8. Modeling External Heat Flux

7.2. Modeling Electric Contact

7.2.1. Modeling Surface Interaction

7.2.2. Modeling Heat Generation Due to Electric Current

7.3. Modeling Magnetic Contact

7.3.1. Using MCC

7.3.2. Modeling Perfect Magnetic Contact

8. Node-to-Node Contact

8.1. Node-to-Node Contact Elements

8.2. Performing a Node-to-Node Contact Analysis

8.2.1. Creating Geometry and Meshing the Model

8.2.2. Generating Contact Elements

8.2.3. Defining the Contact Normal

8.2.4. Defining the Initial Interference or Gap

8.2.5. Selecting the Contact Algorithm

8.2.6. Applying Necessary Boundary Conditions

8.2.7. Defining the Solution Options

8.2.8. Solving the Problem

8.2.9. Reviewing the Results

9. Multipoint Constraints and Assemblies

9.1. Modeling Solid-Solid and Shell-Shell Assemblies

9.2. Modeling a Shell-Solid Assembly

9.3. Surface-Based Constraints

9.3.1. Defining Surface-Based Constraints

9.3.2. Defining Influence Range (PINB)

9.3.3. Degrees of Freedom of Surface-Based Constraints

9.3.4. Specifying a Local Coordinate System

9.3.5. Additional Guidelines for a Force-Distributed Constraint

9.3.6. Additional Guidelines for A Rigid Surface Constraint

9.3.7. Modeling a Beam-Solid Assembly

9.3.8. Modeling Rigid Bodies

9.4. Restrictions and Recommendations for Internal MPC

10. Spot Welds

10.1. Defining a Spot Weld Set

10.1.1. Creating a Basic Spot Weld Set with SWGEN

10.1.2. The Components of a Spot Weld

10.1.3. Adding Surfaces to a Basic Set

10.2. Listing and Deleting Spot Welds

11. Debonding

11.1. Including Debonding in a Contact Analysis

11.1.1. Cohesive Zone Materials Used for Debonding

11.1.2. Debonding Modes

11.1.3. Other Considerations for Debonding

11.1.4. Postprocessing