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Modeling Contact with Abaqus/Standard
6.12
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Course objectives Upon completion of this course you will be able to:
Define general contact and contact pairs
Define appropriate surfaces (rigid or deformable)
Model frictional contact
Model large sliding between deformable bodies
Resolve overclosures in interference fit problems
Targeted audience
Simulation Analysts
Prerequisites This course is recommended for engineers with experience using Abaqus/Standard
About this Course
2 days
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Day 1
Lecture 1: Introduction
Lecture 2: Contact Workflow
Workshop 1 Compression of a Rubber Seal
Lecture 3: Surface-based Contact
Workshop 2 Lap Joint Analysis
Lecture 4: Contact Logic and Diagnostics Tools
Workshop 3 Bolted Flange Analysis
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Day 2
Lecture 5: Contact Properties
Workshop 4 Disk Forging Analysis
Lecture 6: Interference Fits
Workshop 5 Interference Fit Analysis
Workshop 6 Syringe Analysis (optional)
Lecture 7: Additional Features
Workshop 7 Pipe Reel Analysis
Lecture 8: Modeling Tips
Workshop 8 Snap Fit Analysis
Workshop 9 Analysis of a Radial Shaft Seal
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Appendices
Appendix 1: Node-to-Surface Formulation
Appendix 2: Contact Elements
Appendix 3: Dynamic Contact using Implicit Integration
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Legal Notices
The Abaqus Software described in this documentation is available only under license from Dassault
Systèmes and its subsidiary and may be used or reproduced only in accordance with the terms of such
license.
This documentation and the software described in this documentation are subject to change without
prior notice.
Dassault Systèmes and its subsidiaries shall not be responsible for the consequences of any errors or
omissions that may appear in this documentation.
No part of this documentation may be reproduced or distributed in any form without prior written
permission of Dassault Systèmes or its subsidiary.
© Dassault Systèmes, 2012.
Printed in the United States of America
Abaqus, the 3DS logo, SIMULIA and CATIA are trademarks or registered trademarks of Dassault
Systèmes or its subsidiaries in the US and/or other countries.
Other company, product, and service names may be trademarks or service marks of their respective
owners. For additional information concerning trademarks, copyrights, and licenses, see the Legal
Notices in the Abaqus 6.12 Release Notes and the notices at:
http://www.3ds.com/products/simulia/portfolio/product-os-commercial-programs.
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Revision Status
Lecture 1 5/12 Updated for 6.12
Lecture 2 5/12 Updated for 6.12
Lecture 3 5/12 Updated for 6.12
Lecture 4 5/12 Updated for 6.12
Lecture 5 5/12 Updated for 6.12
Lecture 6 5/12 Updated for 6.12
Lecture 7 5/12 Updated for 6.12
Lecture 8 5/12 Updated for 6.12
Appendix 1 5/12 Updated for 6.12
Appendix 2 5/12 Updated for 6.12
Appendix 3 5/12 Updated for 6.12
Workshop 1 5/12 Updated for 6.12
Workshop 2 5/12 Updated for 6.12
Workshop 3 5/12 Updated for 6.12
Workshop 4 5/12 Updated for 6.12
Workshop 5 5/12 Updated for 6.12
Workshop 6 5/12 Updated for 6.12
Workshop 7 5/12 Updated for 6.12
Workshop 8 5/12 Updated for 6.12
Workshop 9 5/12 Updated for 6.12
L1.1
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The following topics are covered in this lesson.
Lesson content:
Introduction
Lesson 1: Introduction
30 minutes
L1.2
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Here are the steps to be followed:
Introduction
1. General Considerations
2. Surface-based Contact
3. Contact Examples
4. Ingredients of a Contact Model
L2.1
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The following topics are covered in this lesson.
Lesson content:
Contact Workflow
Workshop Preliminaries
Workshop 1: Compression of a Rubber Seal (IA)
Workshop 1: Compression of a Rubber Seal (KW)
Lesson 2: Contact Workflow
90 minutes
Both interactive (IA) and keywords (KW) versions
of the workshop are provided. Complete only one.
L2.2
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Here are the steps to be followed:
Contact Workflow
1. Defining Contact Pairs
2. Defining Surfaces for Contact Pairs
3. Defining General Contact
L3.1
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The following topics are covered in this lesson.
Lesson content:
Surface-based Contact
Workshop 2: Lap Joint Analysis (IA)
Workshop 2: Lap Joint Analysis (KW)
Lesson 3: Surface-based Contact
2 hours
Both interactive (IA) and keywords (KW) versions
of the workshop are provided. Complete only one.
L3.2
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Here are the steps to be followed:
Surface-based Contact
1. Contact Formulations
2. Contact Discretization
3. Contact Enforcement Methods
4. Relative Sliding Between Bodies
5. Output of Contact Results
6. Summary
L4.1
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The following topics are covered in this lesson.
Lesson content:
Contact Logic and Diagnostics Tools
Workshop 3: Bolted Flange Analysis (IA)
Workshop 3: Bolted Flange Analysis (KW)
Lesson 4: Contact Logic and Diagnostics Tools
2 hours
Both interactive (IA) and keywords (KW) versions
of the workshop are provided. Complete only one.
L4.2
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Here are the steps to be followed:
Contact Logic and Diagnostics Tools
1. Newton Method
2. The Contact Algorithm
3. Contact Diagnostics: Visual
4. Contact Diagnostics: Text
L5.1
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The following topics are covered in this lesson.
Lesson content:
Contact Properties
Workshop 4: Disk Forging Analysis (IA)
Workshop 4: Disk Forging Analysis (KW)
Lesson 5: Contact Properties
2 hours
Both interactive (IA) and keywords (KW) versions
of the workshop are provided. Complete only one.
L5.2
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Here are the steps to be followed:
Contact Properties
1. Pressure-Overclosure Models
2. Friction Models
3. Friction Enforcement
L6.1
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The following topics are covered in this lesson.
Lesson content:
Interference Fits
Workshop 5: Interference Fit Analysis (IA)
Workshop 5: Interference Fit Analysis (KW)
Workshop 6: Syringe Analysis (IA)
Workshop 6: Syringe Analysis (KW)
Lesson 6: Interference Fits
3 hours
Both interactive (IA) and keywords (KW) versions
of the workshop are provided. Complete only one.
L6.2
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Here are the steps to be followed:
Interference Fits
1. Initial Overclosure
2. Strain-free Adjustments
3. Interference Fit Problems
4. Interference Fit Techniques for
General Contact
5. Interference Fit Techniques for
Contact Pairs
6. Precise Specification of Clearance or
Overclosure
7. Interference Fit Example
8. Geometric Smoothing for Curved
Surfaces
L7.1
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The following topics are covered in this lesson.
Lesson content:
Additional Features
Workshop 7: Pipe Reel Analysis (IA)
Workshop 7: Pipe Reel Analysis (KW)
Lesson 7: Additional Features
2 hours
Both interactive (IA) and keywords (KW) versions
of the workshop are provided. Complete only one.
L7.2
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Here are the steps to be followed:
Additional Features
1. Tie Constraints
2. Rigid Bodies and Contact
3. Analytical Rigid Surfaces
4. Pre-Tensioning of Cross-Sections
5. Pressure Penetration
L8.1
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The following topics are covered in this lesson.
Lesson content:
Modeling Tips
Workshop 8: Snap Fit Analysis (IA)
Workshop 8: Snap Fit Analysis (KW)
Workshop 9: Analysis of a Radial Shaft Seal (IA)
Workshop 9: Analysis of a Radial Shaft Seal (KW)
Lesson 8: Modeling Tips
2 hours
Both interactive (IA) and keywords (KW) versions
of the workshop are provided. Complete only one.
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Here are the steps to be followed:
Modeling Tips
1. Initial Rigid Body Motion
2. Overconstraint
3. Contact with Quadratic Elements
4. Unsymmetric Matrices in Finite-
Sliding Problems
5. Dynamic Instabilities
6. Modeling Corners
A1.1
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The following topics are covered in this lesson.
Lesson content:
Node-to-Surface Formulation
Appendix 1: Node-to-Surface Formulation
2 hours
A1.2
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Here are the steps to be followed:
Node-to-Surface Formulation
1. Discretization
2. Finite Sliding: Surface Considerations
3. Small Sliding Characteristics
4. Small Sliding: Local Contact Plane
5. Small Sliding: Surface Considerations
A2.1
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The following topics are covered in this lesson.
Lesson content:
Contact Elements
Appendix 2: Contact Elements
1 hour
A2.2
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Here are the steps to be followed:
Contact Elements
1. Surface-Based vs. Contact Element
Approach
2. Contact Elements
3. Contact Element Output
4. Contact Element Visualization
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The following topics are covered in this lesson.
Lesson content:
Dynamic Contact using Implicit Integration
Appendix 3: Dynamic Contact using Implicit Integration
1 hour
A3.2
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Here are the steps to be followed:
Dynamic Contact using Implicit Integration
1. Time Integration Issues
2. Implicit Dynamics
3. Damping
4. Impact Problems
5. Contact in Linear Perturbation
Procedures
