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Automotive NVH with Abaqus
6.12
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Course objectives Upon completion of this course you will be able to:
Perform natural frequency extractions
Perform sound radiation analyses (acoustics)
Include nonlinear preloading effects in your NVH simulations
Perform Brake squeal analyses
Create constraints and connections for Automotive NVH models
Use substructuring techniques to run your NVH simulations more efficiently
Perform advanced NVH postprocessing (via plug-ins)
Targeted audience This course is recommended for engineers with experience using Abaqus.
Prerequisites None
About this Course
3 days
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Day 1
Lecture 1 Automotive NVH Overview
Lecture 2 Modal Analysis
Workshop 1 Modal Analysis of a Control Arm
Lecture 3 Steady-State Dynamics
Workshop 2 Steady State Dynamic Analysis of a Control Arm
Lecture 4 Modal Transient Response
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Day 2
Lecture 5 Constraints and Interactions: Part 1
Lecture 6 Constraints and Interactions: Part 2
Workshop 3 Constraints and Interactions for a Control Arm
Lecture 7 Substructures
Workshop 4 Using Substructures to Model a Pick-up Truck
Lecture 8 Base Motion Excitation
Workshop 5 Base Motion of a Pick-up Truck
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Day 3
Lecture 9 Coupled Structural-Acoustic Analysis
Workshop 6 Coupled Structural-Acoustic Analysis of a Truck
Lecture 10 Brake Squeal Analysis
Workshop 7 Brake Squeal Analysis
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Additional Material
Appendix 1 Introduction to Modeling with Abaqus
Appendix 2 Migrating from Nastran to Abaqus: Part 1
Appendix 3 Migrating from Nastran to Abaqus: Part 2
Workshop 8 Nastran Translation: Control Arm Model
Appendix 4 Abaqus-EXCITE Workflow
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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
Lecture 10 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
Appendix 4 5/12 New 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
L1.1
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The following topics are covered in this lesson.
Lesson content:
Automotive NVH Overview
Lesson 1: Automotive NVH Overview
1 hour
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Here are the steps to be followed:
Automotive NVH Overview
1. Introduction
2. From Component to Full Vehicle NVH
3. Example Analyses
4. Abaqus NVH Functionality
5. Summary
L2.1
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The following topics are covered in this lesson.
Lesson content:
Modal Analysis
Workshop Preliminaries
Workshop 1: Modal Analysis of a Control Arm (IA)
Workshop 1: Modal Analysis of a Control Arm (KW)
Lesson 2: Modal Analysis
2 1/2 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:
Modal Analysis
1. Problem Formulation
2. Eigenvalue Solution Methods
3. Example: Engine Block Frequency
Extraction
4. Frequency Output
5. Frequencies of Preloaded Structures
6. Residual Modes
L3.1
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The following topics are covered in this lesson.
Lesson content:
Steady-State Dynamics
Workshop 2: Steady State Dynamic Analysis of a Control Arm (IA)
Workshop 2: Steady State Dynamic Analysis of a Control Arm (KW)
Lesson 3: Steady-State Dynamics
2 ½ 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:
Steady-State Dynamics
1. Introduction
2. Damping
3. Steady-State Dynamics Solution
Procedures
4. Excitation and Output
5. Mobility
6. Steady-State Dynamics Usage
Example
7. Examples
L4.1
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The following topics are covered in this lesson.
Lesson content:
Modal Transient Response
Lesson 4: Modal Transient Response
45 minutes
L4.2
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Here are the steps to be followed:
Modal Transient Response
1. Introduction
2. Excitation
3. Output
4. Examples
L5.1
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The following topics are covered in this lesson.
Lesson content:
Constraints and Interactions: Part 1
Lesson 5: Constraints and Interactions: Part 1
1 hour
L5.2
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Here are the steps to be followed:
Constraints and Interactions: Part 1
1. Introduction
2. Rigid Bodies
3. Surface-Based Coupling Constraints
4. Surface-Based Tie Constraints
5. Contact Interactions
6. Automatic Contact Pair Detection
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The following topics are covered in this lesson.
Lesson content:
Constraints and Interactions: Part 2
Workshop 3: Constraints and Interactions for a Control Arm (IA)
Workshop 3: Constraints and Interactions for a Control Arm (KW)
Lesson 6: Constraints and Interactions: Part 2
2 ½ 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:
Constraints and Interactions: Part 2
1. Multi-Point Constraints
2. Connector Elements
3. Mesh-Independent Fasteners
L7.1
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The following topics are covered in this lesson.
Lesson content:
Substructures
Workshop 4: Using Substructures to Model a Pick-up Truck (IA)
Workshop 4: Using Substructures to Model a Pick-up Truck (KW)
Lesson 7: Substructures
2 ½ 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:
Substructures
1. Introduction
2. Substructure Modeling
3. Preloading Substructures
4. Dynamic Substructuring
5. Substructure Output
6. Substructuring Example: Rolling Tires
L8.1
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The following topics are covered in this lesson.
Lesson content:
Base Motion Excitation
Workshop 5: Base Motion of a Pick-up Truck (IA)
Workshop 5: Base Motion of a Pick-up Truck (KW)
Lesson 8: Base Motion Excitation
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:
Base Motion Excitation
1. Introduction
2. Primary Base Motion
3. Secondary Base Motion
4. Usage
5. Example
L9.1
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The following topics are covered in this lesson.
Lesson content:
Coupled Structural-Acoustic Analysis
Workshop 6: Coupled Structural-Acoustic Analysis of a Truck (IA)
Workshop 6: Coupled Structural-Acoustic Analysis of a Truck (KW)
Lesson 9: Coupled Structural-Acoustic Analysis
2 ½ 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:
Coupled Structural-Acoustic Analysis
1. Introduction
2. Coupled Structural-Acoustics
Modeling
3. Analysis Procedures
4. Element Size
5. Acoustic Infinite Elements
6. Impedance
7. Output
8. Estimate Acoustic Radiation
L10.1
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The following topics are covered in this lesson.
Lesson content:
Brake Squeal Analysis
Workshop 7: Brake Squeal Analysis (IA)
Workshop 7: Brake Squeal Analysis (KW)
Lesson 10: Brake Squeal Analysis
2 ½ hours
Both interactive (IA) and keywords (KW) versions
of the workshop are provided. Complete only one.
L10.2
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Here are the steps to be followed:
Brake Squeal Analysis
1. Introduction
2. Complex Eigenvalue Extraction
3. Verifying Brake Squeal Simulations
4. Examples
5. Transient Dynamics
6. References
A1.1
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The following topics are covered in this lesson.
Lesson content:
Introduction to Modeling with Abaqus
Appendix 1: Introduction to Modeling with Abaqus
1 hour
A1.2
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Here are the steps to be followed:
Introduction to Modeling with Abaqus
1. Abaqus Conventions
2. Details of an Abaqus Input File
3. Overview of Abaqus/CAE
4. Starting Abaqus/CAE
5. Orphan Mesh Import
6. Example
A2.1
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The following topics are covered in this lesson.
Lesson content:
Migrating from Nastran to Abaqus: Part 1
Appendix 2: Migrating from Nastran to Abaqus: Part 1
75 minutes
A2.2
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Here are the steps to be followed:
Migrating from Nastran to Abaqus: Part 1
1. Introduction
2. Nastran and Abaqus Input
Comparison
3. Translator from Nastran to Abaqus
4. Solution Procedure Translation
5. Validating a Translated Model
A3.1
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The following topics are covered in this lesson.
Lesson content:
Migrating from Nastran to Abaqus: Part 2
Workshop 8: Nastran Translation: Control Arm Model (IA)
Workshop 8: Nastran Translation: Control Arm Model (KW)
Appendix 3: Migrating from Nastran to Abaqus: Part 2
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:
Migrating from Nastran to Abaqus: Part 2
1. Modeling Differences Between
Abaqus and Nastran
2. Element Differences Between Abaqus
and Nastran
3. Interface Differences Between
Abaqus and Nastran
4. Translation Troubleshooting
A4.1
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The following topics are covered in this lesson.
Lesson content:
Abaqus-EXCITE Workflow
Appendix 4: Abaqus-EXCITE Workflow
45 minutes
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Here are the steps to be followed:
Abaqus-EXCITE Workflow
1. Introduction
2. Abaqus-EXCITE Workflow
3. Abaqus-EXCITE-Abaqus Workflow
