Material forming processes : simulation, drawing, hydroforming and additive manufacturing / Bouchaib Radi, Abdelkhalak El Hami.

Format:

Book

Author/Creator:

Radi, Bouchaïb, author.

El Hami, Abdelkhalak, author.

Series:

Mechanical engineering and solid mechanics series ; 1.

THEi Wiley ebooks.

Mechanical engineering and solid mechanics series. Mathematical and mechanical engineering set ; 1

THEi Wiley ebooks

Language:

English

Subjects (All):

Materials.

Physical Description:

1 online resource (276 pages) : illustrations (some color)

Edition:

1st ed.

Place of Publication:

Hoboken, New Jersey : ISTE Ltd/John Wiley and Sons Inc, 2016.

System Details:

Access using campus network via VPN at home (THEi Users Only).

Summary:

Manufacturing industries strive to improve the quality and reliability of their products, while simultaneously reducing production costs. To do this, modernized work tools must be produced; this will enable a reduction in the duration of the product development cycle, optimization of product development procedures, and ultimately improvement in the productivity of design and manufacturing phases. Numerical simulations of forming processes are used to this end, and in this book various methods and models for forming processes (including stamping, hydroforming and additive manufacturing) are presented. The theoretical and numerical advances of these processes involving large deformation mechanics on the basis of large transformations are explored, in addition to the various techniques for optimization and calculation of reliability. The advances and techniques within this book will be of interest to professional engineers in the automotive, aerospace, defence and other industries, as well as graduates and undergraduates in these fields.

Contents:

Cover

Title Page

Copyright

Contents

Preface

1. Forming Processes

1.1. Introduction

1.2. Different processes

1.2.1. Smelting

1.2.2. Machining

1.2.3. Powder metallurgy

1.3. Hot and cold forming

1.3.1. Influence of the static parameters

1.3.2. Hydroforming

1.3.3. The limitations of the process

1.3.4. Deep drawing

1.4. Experimental characterization

1.5. Forming criteria

1.5.1. Influence of the structure of sheet metal

1.5.2. Physical strain mechanisms

1.5.3. Different criteria

2. Contact and Large Deformation Mechanics

2.1. Introduction

2.2. Large transformation kinematics

2.2.1. Kinematics of the problem in spatial coordinates

2.3. Transformation gradient

2.4. Strain measurements

2.4.1. Polar decomposition of F

2.4.2. Strain rate tensor

2.4.3. Canonical decomposition of F

2.4.4. Kinematics of the problem in convective coordinates

2.4.5. Transformation tensor

2.4.6. Strain rate measures

2.4.7. Strain tensor

2.5. Constitutive relations

2.5.1. Large elastoplastic transformations

2.5.2. Kinematic decomposition of the transformation

2.6. Incremental behavioral problem

2.6.1. Stress incrementation

2.6.2. Strain incrementation

2.6.3. Solution of the behavior problem

2.7. Definition of the P.V.W. in major transformations

2.7.1. Equilibrium equations

2.7.2. Definition of the P.V.W.

2.7.3. Incremental formulation

2.8. Contact kinematics

2.8.1. Definition of the problem and notations

2.8.2. Contact formulation

2.8.3. Formulation of the friction problem

2.8.4. Friction laws

2.8.5. Coulomb's law

2.8.6. Tresca's law

3. Stamping

3.1. Introduction

3.2. Forming limit curve

3.3. Stamping modeling: incremental problem

3.3.1. Modeling of sheet metal.

3.3.2. Spatial discretization: finite elements method

3.3.3. Choice of sheet metal and finite element approximation

3.4. Modeling tools

3.4.1. Tool surface meshing into simple geometry elements

3.4.2. Analytical representation of tools

3.4.3. Bezier patches

3.5. Stamping numerical processing

3.5.1. Problem statement

3.5.2. The augmented Lagrangian method

3.6. Numerical simulations

3.6.1. Sollac test

4. Hydroforming

4.1. Introduction

4.2. Hydroforming

4.2.1. Tube hydroforming

4.2.2. Sheet metal hydroforming

4.3. Plastic instabilities in hydroforming

4.3.1. Tube buckling

4.3.2. Wrinkling

4.3.3. Necking

4.3.4. Springback

4.4. Forming limit curve

4.5. Material characterization for hydroforming

4.5.1. Tensile testing

4.5.2. Bulge testing

4.6. Analytical modeling of a inflation test

4.6.1. Hill48 criterion in planar stresses

4.7. Numerical simulation

4.8. Mechanical characteristic of tube behavior

5. Additive Manufacturing

5.1. Introduction

5.2. RP and stratoconception

5.3. Additive manufacturing definitions

5.4. Principle

5.4.1. Principle of powder bed laser sintering/melting

5.4.2. Principle of laser sintering/melting by projecting powder

5.5. Additive manufacturing in the IT-based development process

5.5.1. Concept "from the object to the object"

5.5.2. Key element of the IT development process

6. Optimization and Reliability in Forming

6.1. Introduction

6.2. Different approaches to optimization process

6.2.1. Limitations of the deterministic approaches

6.3. Characterization of forming processes by objective functions

6.4. Deterministic and probabilistic optimization of a T-shaped tube

6.4.1. Problem description

6.4.2. Choice of the objective function and definition of the stresses.

6.4.3. Choice of the uncertain parameters

6.4.4. Choice of the objective function and the stresses

6.4.5. Deterministic formulation of the optimization problem

6.4.6. Probabilistic formulation of the optimization problem

6.4.7. Optima sensitivity to uncertainties

6.5. Deterministic and optimization-based reliability of a tube with two expansion regions

6.5.1. Problem description

6.5.2. Deterministic and reliabilist formulation of the optimization problem

6.6. Optimization-based reliability of circular sheet metal hydroforming

6.6.1. Problem description

6.6.2. Construction of the objective function and of the stresses

6.6.3. Effects diagram

6.6.4. Deterministic solution of the optimization problem

6.6.5. Reliabilist solution of the optimization problem

6.6.6. Effect of uncertainties on the optimal variables

6.7. Deterministic and robust optimization of a square plate

6.7.1. Robust resolution of the optimization problem

6.8. Optimization of thin sheet metal

7. Application of Metamodels to Hydroforming

7.1. Introduction

7.2. Sources of uncertainty in forming

7.3. Failure criteria

7.3.1. Failure criteria for necking

7.3.2. Failure criteria for wrinkling

7.4. Evaluation strategy of the probability of failure

7.4.1. Finite element model and choice of uncertainty parameters

7.4.2. Identification of failure modes and definition of boundary states

7.4.3. Identification of elements and critical areas

7.5. Critical strains probabilistic characterization

7.5.1. Choice of numerical experimental design

7.5.2. Construction of metamodels

7.5.3. Validation and statistical analysis of metamodels

7.5.4. Fitting of distributions

7.6. Necking and wrinkling probabilistic study

7.7. Effects of the correlations on the probability of failure.

7.7.1. Spatial estimation of the probability of failures

8. Parameters Identification in Metal Forming

8.1. Introduction

8.2. Identification methods

8.2.1. Validation test

8.3. Welded tube hydroforming

8.3.1. Thin sheet metal hydroforming

Appendices

Appendix 1. Optimization in Mechanics

Appendix 2. Reliability in Mechanics

Appendix 3. Metamodels

Bibliography

Index

Other titles from iSTE in Mechanical Engineering and Solid Mechanics

EULA.

Notes:

Description based on print version record.

ISBN:

9781119332718

1119332710

9781119361398

1119361397

9781119361404

1119361400

OCLC:

958936789