ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
R
Substructures and Submodeling with Abaqus
6.12
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
Course objectives Upon completion of this course you will be able to:
Understand the difference between substructuring and submodeling
Build, translate, rotate and reflect substructures
Build preloads into substructures
Design meshes for submodel analysis
Perform solid-to-solid, shell-to-shell, and shell-to-solid submodeling
Targeted audience This course is recommended for engineers with experience using Abaqus/Standard.
Prerequisites None
About this Course
2 days
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
Day 1
Lecture 1: Introduction to Substructures
Lecture 2: Using Static Substructuring in Abaqus
Lecture 3: Substructuring as a Linear Perturbation about a Preloaded State
Lecture 4: Dynamic Substructuring
Lecture 5: Substructure Output
Lecture 6: Substructuring Examples
Workshop 1a: Substructures: Plane Frame Analysis
Workshop 1b: Substructures: Surface Mount Analysis
Lecture 7: Using substructures with Abaqus/Explicit
Workshop 2: Substructures: Beam Impact (optional)
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
Day 2
Lecture 8: Introduction to Submodeling
Lecture 9: Submodeling in Abaqus
Lecture 10: Abaqus Usage and Examples (Part 1)
Workshop 3: Submodeling: Pressure Vessel Nozzle Analysis
Lecture 11: Abaqus Usage and Examples (Part 2)
Workshop 4: Submodeling: Ceramic-Metal Braze Joint
Lecture 12: Submodeling Practices
Lecture 13: Limitations of Submodeling
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
Additional Material
Appendix 1: Theory of Substructures
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
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.
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
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
Lecture 9 5/12 Updated for 6.12
Lecture 10 5/12 Updated for 6.12
Lecture 11 5/12 Updated for 6.12
Lecture 12 5/12 Updated for 6.12
Lecture 13 5/12 Updated for 6.12
Appendix 1 5/12 Updated for 6.12
Workshop 1a 5/12 Updated for 6.12
Workshop 1b 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
L1.1
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
The following topics are covered in this lesson.
Lesson content:
Introduction to Substructures
Lesson 1: Introduction to Substructures
30 minutes
L1.2
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
Here are the steps to be followed:
Introduction to Substructures
1. Why Substructuring?
2. Static Substructuring
3. Advantages of Substructuring
4. Procedures Supporting Substructures
L2.1
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
The following topics are covered in this lesson.
Lesson content:
Using Static Substructuring in Abaqus
Lesson 2: Using Static Substructuring in Abaqus
1 hour
L2.2
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
Here are the steps to be followed:
Using Static Substructuring in Abaqus
1. The Basics
2. Substructure Generation
3. Substructure Usage: Abaqus/CAE
4. Substructure Usage: Keywords
5. Substructure Load Cases
6. Substructure Gravity Loading
7. Kinematic Constraints in
Substructures
8. Limitations
L3.1
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
The following topics are covered in this lesson.
Lesson content:
Substructuring as a Linear Perturbation about a Preloaded State
Lesson 3: Substructuring as a Linear Perturbation about a Preloaded State
30 minutes
L3.2
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
Here are the steps to be followed:
Substructuring as a Linear Perturbation about a Preloaded State
1. Introduction
2. Substructure Tangent Stiffness
Calculation
3. Response Quantities
4. Effect of Preloads at the Usage Level
5. Preloading Syntax
6. Preloading Example: Rotating
Structure
L4.1
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
The following topics are covered in this lesson.
Lesson content:
Dynamic Substructuring
Lesson 4: Dynamic Substructuring
45 minutes
L4.2
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
Here are the steps to be followed:
Dynamic Substructuring
1. Guyan Reduction
2. Dynamic Mode Addition
3. Damping with Substructures
L5.1
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
The following topics are covered in this lesson.
Lesson content:
Substructure Output
Lesson 5: Substructure Output
45 minutes
L5.2
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
Here are the steps to be followed:
Substructure Output
1. Introduction
2. Visualizing Substructure Results
3. Output of Eliminated Degrees of
Freedom
4. Output of Substructure Matrices
5. Substructure Library Utilities
L6.1
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
The following topics are covered in this lesson.
Lesson content:
Substructuring Examples
Workshop Preliminaries
Workshop 1a: Substructures: Plane Frame Analysis (IA)
Workshop 1a: Substructures: Plane Frame Analysis (KW)
Workshop 1b: Substructures: Surface Mount Analysis (IA)
Workshop 1b: Substructures: Surface Mount Analysis (KW)
Lesson 6: Substructuring Examples
3 hours
Both interactive (IA) and keywords (KW) versions
of the workshops are provided. Complete only
one for each workshop.
L6.2
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
Here are the steps to be followed:
Substructuring Examples
1. Cyclic Symmetry
2. Multilevel Substructuring
L7.1
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
The following topics are covered in this lesson.
Lesson content:
Using Substructures with Abaqus/Explicit
Workshop 2: Substructures: Beam Impact (IA)
Workshop 2: Substructures: Beam Impact (KW)
Lesson 7: Using Substructures with Abaqus/Explicit
2 hours
Both interactive (IA) and keywords (KW) versions
of the workshop are provided. Complete only one.
L7.2
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
Here are the steps to be followed:
Using Substructures with Abaqus/Explicit
1. Introduction
2. Examples
3. General Concepts
4. Keyword Interface
5. Interactive Interface
6. Postprocessing
7. Technology Notes
L8.1
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
The following topics are covered in this lesson.
Lesson content:
Introduction to Submodeling
Lesson 8: Introduction to Submodeling
15 minutes
L8.2
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
Here are the steps to be followed:
Introduction to Submodeling
1. Concept of Submodeling
2. Motivation for Submodeling
L9.1
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
The following topics are covered in this lesson.
Lesson content:
Submodeling in Abaqus
Lesson 9: Submodeling in Abaqus
30 minutes
L9.2
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
Here are the steps to be followed:
Submodeling in Abaqus
1. Fundamental Assumptions
2. Submodeling Techniques
3. Node-based Implementation
4. Surface-based Implementation
L10.1
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
The following topics are covered in this lesson.
Lesson content:
Abaqus Usage and Examples (Part 1)
Workshop 3: Submodeling: Pressure Vessel Nozzle Analysis (IA)
Workshop 3: Submodeling: Pressure Vessel Nozzle Analysis (KW)
Lesson 10: Abaqus Usage and Examples (Part 1)
2 ½ hours
Both interactive (IA) and keywords (KW) versions
of the workshop are provided. Complete only one.
L10.2
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
Here are the steps to be followed:
Abaqus Usage and Examples (Part 1)
1. Terminology
2. Transfer of Data
3. Prescribed Values
4. Submodeling Workflow
5. Surface-Based Submodel Boundaries
6. Example: Conical Crack in a Half
Space
7. Example: Pressure Vessel
L11.1
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
The following topics are covered in this lesson.
Lesson content:
Abaqus Usage and Examples (Part 2)
Workshop 4: Submodeling: Ceramic-Metal Braze Joint (IA)
Workshop 4: Submodeling: Ceramic-Metal Braze Joint (KW)
Lesson 11: Abaqus Usage and Examples (Part 2)
2 hours
Both interactive (IA) and keywords (KW) versions
of the workshop are provided. Complete only one.
L11.2
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
Here are the steps to be followed:
Abaqus Usage and Examples (Part 2)
1. Node-Based Submodel Boundaries
2. Example: Stacked Sheet Metal
Assembly
3. Example: Large Displacement
Analysis
4. Tolerances at the Submodel Boundary
5. Shell-to-Solid Submodeling
6. Example: Shell-to-Solid Submodel of
a Pipe Joint
L12.1
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
The following topics are covered in this lesson.
Lesson content:
Submodeling Practices
Lesson 12: Submodeling Practices
1 hour
L12.2
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
Here are the steps to be followed:
Submodeling Practices
1. Perturbation Analysis
2. Changing Procedures
3. The Frequency Domain
4. Submodeling and Thermal Stress
Analysis
5. Example: Thermal Strain in a Bar
6. Submodeling in Dynamic Procedures
7. Example: Speaker Diaphragm (1/7)
L13.1
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
The following topics are covered in this lesson.
Lesson content:
Limitations of Submodeling
Lesson 13: Limitations of Submodeling
15 minutes
L13.2
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
Here are the steps to be followed:
Limitations of Submodeling
1. Elements
2. Procedures
3. Shell-to-Solid
A1.1
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
The following topics are covered in this lesson.
Lesson content:
Theory of Substructures
Appendix 1: Theory of Substructures
15 minutes
A1.2
ww
w.3
ds.c
om
| ©
Da
ssa
ult S
ystè
me
s
Here are the steps to be followed:
Theory of Substructures
1. Static Substructuring
2. Guyan Reduction
3. Restrained Mode Addition