linear dynamics with abaqus - 3ds es day 1 lecture 1: introduction to abaqus linear dynamics lecture...
TRANSCRIPT
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Linear Dynamics with Abaqus
6.12
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Course objectives Upon completion of this course you will be able to:
Extract eigenmodes about a certain frequency
Determine whether the number of extracted eigenmodes is sufficient to represent the structure's response
adequately
Perform transient, steady-state, response spectrum and random response analyses using the eigenmodes
Use multiple base motions
Apply damping in linear problems
Targeted audience Engineers with experience using Abaqus.
Prerequisites None
About this Course
2 days
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Day 1
Lecture 1: Introduction to Abaqus Linear Dynamics
Lecture 2: Extracting Real Eigenvalues
Workshop 1: Eigenvalue Natural Frequency Extraction
Lecture 3: Damping and Modal Superposition
Lecture 4: Base Motion Excitation
Lecture 5: Modal Transient Dynamics
Workshop 2: Modal Dynamics
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Day 2
Lecture 6: Response Spectrum Analysis
Workshop 3: Response Spectrum
Lecture 7: Steady-State Harmonic Response
Workshop 4: Steady-State Dynamics
Lecture 8: Introduction to Random Response
Workshop 5: Random Response Analysis
Lecture 9: Complex Eigenvalue Analysis
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Additional Material
Appendix 1: Introduction to Nonlinear Dynamics
Appendix 2: Nonlinear Dynamics: Abaqus Usage
Appendix 3: Nonlinear Dynamics Examples
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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
Lecture 9 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
L1.1
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The following topics are covered in this lesson.
Lesson content:
Introduction to Abaqus Linear Dynamics
Lesson 1: Introduction to Abaqus Linear Dynamics
1 1/2 hours
L1.2
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Here are the steps to be followed:
Introduction to Abaqus Linear Dynamics
1. Dynamic Response
2. When to Consider Dynamic Effects
3. Linear Dynamics Procedures
4. Linear Dynamics Software
Architecture
L2.1
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The following topics are covered in this lesson.
Lesson content:
Extracting Real Eigenvalues
Workshop Preliminaries
Workshop 1: Eigenvalue Natural Frequency Extraction (IA)
Workshop 1: Eigenvalue Natural Frequency Extraction (KW)
Lesson 2: Extracting Real Eigenvalues
3 hours
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:
Extracting Real Eigenvalues
1. Problem Formulation
2. Eigenvalue Solution Methods
3. Example: Engine Block Frequency
Extraction
4. Frequency Output
5. Frequencies of Preloaded Structures
6. Extracting Repeated
Eigenfrequencies
7. Residual Modes
8. Workshop Model Description
L3.1
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The following topics are covered in this lesson.
Lesson content:
Damping and Modal Superposition
Lesson 3: Damping and Modal Superposition
90 minutes
L3.2
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Here are the steps to be followed:
Damping and Modal Superposition
1. Introduction
2. Damping in Direct Solutions
3. Damping in Modal Subspace
Projection Solutions
4. Damping in Modal Superposition
Procedures
5. Material Damping
6. Element Damping
7. Global Damping
8. Modal Damping
9. Damping Controls
10. Summary
L4.1
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The following topics are covered in this lesson.
Lesson content:
Base Motion Excitation
Lesson 4: Base Motion Excitation
45 minutes
L4.2
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Here are the steps to be followed:
Base Motion Excitation
1. Introduction
2. Primary Base Motion
3. Secondary Base Motions
4. Usage
5. Example
L5.1
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The following topics are covered in this lesson.
Lesson content:
Modal Transient Dynamics
Workshop 2: Modal Dynamics (IA)
Workshop 2: Modal Dynamics (KW)
Lesson 5: Modal Transient Dynamics
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:
Modal Transient Dynamics
1. Introduction
2. Excitation and Output
3. Example
4. Subspace Solutions for Transient
Dynamics
L6.1
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The following topics are covered in this lesson.
Lesson content:
Response Spectrum Analysis
Workshop 3: Response Spectrum (IA)
Workshop 3: Response Spectrum (KW)
Lesson 6: Response Spectrum Analysis
2 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:
Response Spectrum Analysis
1. Introduction
2. The Response Spectrum
3. Determining Peak Modal Response
4. Modal Summation Methods
5. Combining Results from Multiple
Spectrums
6. Spectrum Definition
7. Response Spectrum Usage
8. Response Spectrum Example
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The following topics are covered in this lesson.
Lesson content:
Steady-State Harmonic Response
Workshop 4: Steady-State Dynamics (IA)
Workshop 4: Steady-State Dynamics (KW)
Lesson 7: Steady-State Harmonic Response
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:
Steady-State Harmonic Response
1. Introduction
2. Steady-State Dynamics Solution
Procedures
3. Excitation and Output
4. Steady-State Dynamics Usage
5. Comparative Example
L8.1
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The following topics are covered in this lesson.
Lesson content:
Introduction to Random Response
Workshop 5: Random Response Analysis (IA)
Workshop 5: Random Response Analysis (KW)
Lesson 8: Introduction to Random Response
2 hours
Both interactive (IA) and keywords (KW) versions
of the workshop are provided. Complete only one.
L8.2
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Here are the steps to be followed:
Introduction to Random Response
1. Overview
2. Excitation and Output
3. Random Response Usage
4. Base Motion Example
5. Steady-State Dynamics Alternative
Approach
L9.1
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The following topics are covered in this lesson.
Lesson content:
Complex Eigenvalue Analysis
Lesson 9: Complex Eigenvalue Analysis
75 minutes
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Here are the steps to be followed:
Complex Eigenvalue Analysis
1. Overview
2. Implementation
3. Brake Squeal Analysis
A1.1
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The following topics are covered in this lesson.
Lesson content:
Introduction to Nonlinear Dynamics
Appendix 1: Introduction to Nonlinear Dynamics
45 minutes
A1.2
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Here are the steps to be followed:
Introduction to Nonlinear Dynamics
1. Introduction
2. Equations for Dynamic Problems
3. Time integration of the equations of
motion
4. Automatic time incrementation
5. Dynamic Contact
6. Comparing Abaqus/Standard and
Abaqus/Explicit
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The following topics are covered in this lesson.
Lesson content:
Nonlinear Dynamics: Abaqus Usage
Appendix 2: Nonlinear Dynamics: Abaqus Usage
75 minutes
A2.2
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Here are the steps to be followed:
Nonlinear Dynamics: Abaqus Usage
1. Implicit Dynamics
2. Explicit Dynamics
3. Algorithmic Details
4. Initial Conditions and Loads
5. Stability and Accuracy of the
Trapezoidal Rule
6. Material Damping
7. Half-Increment Residual Tolerance
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The following topics are covered in this lesson.
Lesson content:
Nonlinear Dynamics Examples
Appendix 3: Nonlinear Dynamics Examples
2 hours
A3.2
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Here are the steps to be followed:
Nonlinear Dynamics Examples
1. Damped shallow arch
2. Ball impact
3. Tennis racket and ball
4. Crimp forming
5. Blade containment
6. Inertia relief