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Modeling Extreme Deformation and

Fluid Flow with Abaqus

6.12

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Course objectives Upon completion of this course you will be able to:

Create Eulerian meshes and define the initial material location within an Eulerian mesh

Specify initial conditions, boundary conditions and loads to materials in the Eulerian domain

Use general contact to model Eulerian-Lagrangian interactions

Create SPH meshes

Automatically convert conventional continuum elements to SPH particles

Define initial conditions, boundary conditions, and loads on SPH particles

Define contact interactions between SPH particles an element-based or analytical surfaces

Understand the differences between the CEL, SPH, and CFD approaches

Targeted audience

Simulation Analysts

Prerequisites This course is recommended for engineers with experience using Abaqus

About this Course

2 days

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Day 1

Lecture 1 Introduction

Lecture 2 Overview of CEL (Coupled Eulerian-Lagrangian) Analysis

Lecture 3 Creating a CEL Model

Workshop 1 Deformation of an Elastic Dam under Time-dependent Water Pressure

Lecture 4 Abaqus/CAE Volume Fraction Tool

Lecture 5 CEL Modeling Techniques

Workshop 2 Bird Strike Impact on Double-walled Aircraft Fuselage

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Day 2

Lecture 6 CEL for Fluid Applications

Lecture 7 Overview of SPH (Smoothed Particle Hydrodynamics)

Lecture 8 SPH Modeling Techniques

Workshop 3 Bird Strike on an Airplane Engine Blade

Lecture 9 Overview of Abaqus/CFD

Workshop 4 Unsteady flow across a circular cylinder

Lecture 10 Comparison of CEL, CFD, and SPH

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Additional material

Appendix 1 SPH Theory

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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 New 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 6.11

Lecture 7 5/12 Updated for 6.11

Lecture 8 5/12 New for 6.12

Lecture 9 5/12 New for 6.12

Lecture 10 5/12 New for 6.12

Appendix 1 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 New for 6.12

Workshop 4 5/12 New for 6.12

L1.1

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The following topics are covered in this lesson.

Lesson content:

Introduction

Lesson 1: Introduction

1 hour

L1.2

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Here are the steps to be followed:

Introduction

1. SIMULIA Multiphysics

2. Coupled Eulerian-Lagrangian (CEL)

approach

3. Smoothed Particle Hydrodynamics

(SPH) approach

4. Abaqus/CFD

L2.1

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The following topics are covered in this lesson.

Lesson content:

Overview of CEL (Coupled Eulerian-Lagrangian) Analysis

Lesson 2: Overview of CEL (Coupled Eulerian-Lagrangian) Analysis

45 minutes

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Here are the steps to be followed:

Overview of CEL (Coupled Eulerian-Lagrangian) Analysis

1. CEL Analysis Technique

2. CEL Examples

3. Detailed case study: Tire

Hydroplaning/Aquaplaning

L3.1

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The following topics are covered in this lesson.

Lesson content:

Creating CEL Model

Workshop Preliminaries

Workshop 1: Deformation of an Elastic Dam under Time-dependent Water Pressure (IA)

Workshop 1: Deformation of an Elastic Dam under Time-dependent Water Pressure (KW)

Lesson 3: Creating a CEL Model

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:

Creating CEL Model

1. Case Study Introduction: Front-load

washing machine

2. Defining the Eulerian Domain

3. Eulerian-Lagrangian Coupling

4. Postprocessing—Basic tips

5. Postprocessing—Additional

suggestions

6. Summary

L4.1

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The following topics are covered in this lesson.

Lesson content:

Abaqus/CAE Volume Fraction Tool

Lesson 4: Abaqus/CAE Volume Fraction Tool

30 minutes

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Here are the steps to be followed:

Abaqus/CAE Volume Fraction Tool

1. Introduction

2. Using the volume fraction tool

3. Tips

L5.1

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The following topics are covered in this lesson.

Lesson content:

Coupled Eulerian-Lagrangian Modeling Techniques

Workshop 2: Bird Strike Impact on Double-walled Aircraft Fuselage (IA)

Workshop 2: Bird Strike Impact on Double-walled Aircraft Fuselage (KW)

Lesson 5: Coupled Eulerian-Lagrangian Modeling Techniques

2.5 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:

Coupled Eulerian-Lagrangian Modeling Techniques

1. Element types and procedures

2. Initial conditions, boundary conditions,

and loads

3. Eulerian mesh motion

4. Contact

5. Mesh density

6. Adaptive mesh refinement

7. Materials and material instances

8. Output and postprocessing

9. Limitations

L6.1

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The following topics are covered in this lesson.

Lesson content:

CEL for Fluid Applications

Lesson 6: CEL for Fluid Applications

2 hours

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Here are the steps to be followed:

CEL for Fluid Applications

1. EOS Materials

2. CEL and Flow Problems

3. Flow Benchmarks

4. Hourglass Control

5. Boundary Reflections

6. Tips

7. Troubleshooting Checklist

L7.1

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The following topics are covered in this lesson.

Lesson content:

Overview of SPH (Smoothed Particle Hydrodynamics)

Lesson 7: Overview of SPH (Smoothed Particle Hydrodynamics)

1 hour

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Here are the steps to be followed:

Overview of SPH (Smoothed Particle Hydrodynamics)

1. Introduction

2. SPH Applications

3. SPH Basics

4. SPH Interpolation

5. Important Characteristic Properties of

SPH

6. Examples

a. Water-wave impact

b. Priming a Pump

c. Bottle Drop

d. Garden Hose

e. Garden Hose

f. Projectile Impact on a Plate

L8.1

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The following topics are covered in this lesson.

Lesson content:

SPH Modeling Techniques

Workshop 3: Bird Strike on an Airplane Engine Blade (IA)

Workshop 3: Bird Strike on an Airplane Engine Blade (KW)

Lesson 8: SPH Modeling Techniques

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:

SPH Modeling Techniques

1. Abaqus Usage Overview

2. Particle elements

3. Model definition

4. Optional controls

5. Converting finite elements to SPH

particles

6. Limitations

L9.1

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The following topics are covered in this lesson.

Lesson content:

Overview of Abaqus/CFD

Workshop 4: Unsteady Flow Across a Circular Cylinder (IA)

Workshop 4: Unsteady Flow Across a Circular Cylinder (KW)

Lesson 9: Overview of Abaqus/CFD

2 hours

Both interactive (IA) and keywords (KW) versions

of the workshop are provided. Complete only one.

L9.2

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Here are the steps to be followed:

Overview of Abaqus/CFD

1. Abaqus/CFD

2. Fluid-Structure Interaction (FSI)

3. Native FSI using Abaqus

4. Target Applications

5. Execution Procedure

L10.1

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The following topics are covered in this lesson.

Lesson content:

Comparison of CEL, CFD, and SPH

Lesson 10: Comparison of CEL, CFD, and SPH

45 minutes

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Here are the steps to be followed:

Comparison of CEL, CFD, and SPH

1. Abbreviations

2. Material considerations

3. Contact considerations

4. Geometry and mesh considerations

5. Analysis type considerations

6. Computational considerations

7. Summary tables

a. Functionality-based comparison

b. Application-based comparison