Prediction of Local Strain and Hardness in Sheet Forming
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Sven Thomas
Abstract
A simulation procedure to predict local deformation and properties in deep drawing and other sheet forming processes has been developed, and model experiments were performed to verify the predicted local strain after various ways and degrees of deformation. A strip of aluminium alloy sheet was pulled through a gap between a die and a punch, and bent around a rounded edge and bent back again. Local strains in a cross section of the sheet were estimated from hardness values measured before and after bending by using the hardness – strain relationship obtained for the alloy from tests carried out in tension and compression and with alternating deformation. The finite element (FE) model using ABAQUS was adjusted to the experimental set-up as closely as possible. The agreement between predictions and experiments is in the range of experimental scatter and the general trends are excellently reproduced. However, the precision of hardness measurements is not high enough to check the reliability of the numerical predictions in detail.
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The project was supported within the Sonderforschungsbereich 298, Teilprojekt A10 of the Deutsche Forschungsgemeinschaft. The project has been carried out in cooperation with the “Institut für Produktionstechnik und Umformmaschinen” at the faculty of Mechanical Engineering of Darmstadt University of Technology. We are grateful for the access to the special testing device built for this purpose.
References
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© 2001 Carl Hanser Verlag, München
Articles in the same Issue
- Frontmatter
- Editorial
- “No wise man ever wish to be younger”
- Aufsätze/Articles
- Entropy, Transformations and Sustainability of Industrial Life Cycles
- Positron Annihilation in Stable and Supercooled Metallic Melts
- Local Characterization of the Diffusion Process during Discontinuous Precipitation: A Review
- The Dependence of Abnormal Grain Growth on Initial Grain Size in 316 L Stainless Steel
- Diffusion-Controlled Grain Growth in Liquid-Phase Sintering of W–Cu Nanocomposites
- Evaluation of Densification Mechanisms of Liquid-Phase Sintering
- Phase Transformation of a Dual Phase Al–Fe Alloy Prepared by Mechanical Alloying
- Discrete Element Simulation of Ceramic Powder Processing
- Strain Relaxation and Internal Friction in the Range of the Glass Transition
- A Thermodynamic Model of an Amorphous Grain Boundary Phase in Liquid-Phase Sintered β-SiAlON Ceramic
- Epitaxial Growth of Metals on (100) SrTiO3: The Influence of Lattice Mismatch and Reactivity
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- Structural Transformations Induced by Swift Heavy Ions in Polysiloxanes and Polycarbosilanes
- Metastable Al–Nd–Ni and Stable Al–La–Ni Phase Equilibria
- Phase Equilibria of the Al–Nd and Al–Nd–Ni Systems
- System Pr –Pd–O: Phase Diagram and Thermodynamic Properties of Ternary Oxides Using Solid-State Cells with Special Features
- Calculation of Phase Equilibria in Candidate Solder Alloys
- Thermodynamic Assessment of the Zr–O Binary System
- Delaminating Layered Oxide Composites with Wavy Interfaces
- Contemporary Materials Issues for Advanced EB-PVD Thermal Barrier Coating Systems
- Monte Carlo Simulations of Strength Distributions of Brittle Materials – Type of Distribution, Specimen and Sample Size
- On the Optimization of the Microstructure in Powder Metallurgical Ag–SnO2–In2O3 Contact Materials
- Some New Aspects of Microstructural Design of β-Si3N4 Ceramics
- Ni-Based SOFC Anodes: Microstructure and Electrochemistry
- Effect of Copper Line Geometry and Process Parameters on Interconnect Microstructure and Degradation Processes
- Thermal Stability of Nanoscale Co/Cu Multilayers
- Methods for Characterising the Precipitation of Nanometer-Sized Secondary Hardening Carbides and Related Effects in Tool Steels
- Prediction of Local Strain and Hardness in Sheet Forming
- Novel in situ-Infiltrated Al2O3-Metal Composites
- Influence of Microstructure and Impurities on Thermal Conductivity of Aluminium Nitride Ceramics
- Notifications/Mitteilungen
- Personelles/Personal
- Bücher/Books
- Tagungen/Conferences
Articles in the same Issue
- Frontmatter
- Editorial
- “No wise man ever wish to be younger”
- Aufsätze/Articles
- Entropy, Transformations and Sustainability of Industrial Life Cycles
- Positron Annihilation in Stable and Supercooled Metallic Melts
- Local Characterization of the Diffusion Process during Discontinuous Precipitation: A Review
- The Dependence of Abnormal Grain Growth on Initial Grain Size in 316 L Stainless Steel
- Diffusion-Controlled Grain Growth in Liquid-Phase Sintering of W–Cu Nanocomposites
- Evaluation of Densification Mechanisms of Liquid-Phase Sintering
- Phase Transformation of a Dual Phase Al–Fe Alloy Prepared by Mechanical Alloying
- Discrete Element Simulation of Ceramic Powder Processing
- Strain Relaxation and Internal Friction in the Range of the Glass Transition
- A Thermodynamic Model of an Amorphous Grain Boundary Phase in Liquid-Phase Sintered β-SiAlON Ceramic
- Epitaxial Growth of Metals on (100) SrTiO3: The Influence of Lattice Mismatch and Reactivity
- Microstructure and Modifications of Cu/Al2O3 Interfaces
- Structural Transformations Induced by Swift Heavy Ions in Polysiloxanes and Polycarbosilanes
- Metastable Al–Nd–Ni and Stable Al–La–Ni Phase Equilibria
- Phase Equilibria of the Al–Nd and Al–Nd–Ni Systems
- System Pr –Pd–O: Phase Diagram and Thermodynamic Properties of Ternary Oxides Using Solid-State Cells with Special Features
- Calculation of Phase Equilibria in Candidate Solder Alloys
- Thermodynamic Assessment of the Zr–O Binary System
- Delaminating Layered Oxide Composites with Wavy Interfaces
- Contemporary Materials Issues for Advanced EB-PVD Thermal Barrier Coating Systems
- Monte Carlo Simulations of Strength Distributions of Brittle Materials – Type of Distribution, Specimen and Sample Size
- On the Optimization of the Microstructure in Powder Metallurgical Ag–SnO2–In2O3 Contact Materials
- Some New Aspects of Microstructural Design of β-Si3N4 Ceramics
- Ni-Based SOFC Anodes: Microstructure and Electrochemistry
- Effect of Copper Line Geometry and Process Parameters on Interconnect Microstructure and Degradation Processes
- Thermal Stability of Nanoscale Co/Cu Multilayers
- Methods for Characterising the Precipitation of Nanometer-Sized Secondary Hardening Carbides and Related Effects in Tool Steels
- Prediction of Local Strain and Hardness in Sheet Forming
- Novel in situ-Infiltrated Al2O3-Metal Composites
- Influence of Microstructure and Impurities on Thermal Conductivity of Aluminium Nitride Ceramics
- Notifications/Mitteilungen
- Personelles/Personal
- Bücher/Books
- Tagungen/Conferences
