Influences of material properties of components on formability of two-layer metallic sheets

Formability of two-layer metallic sheet is constrained by plastic instability and localized necking. Forming limit diagram (FLD) is an accepted measure of sheet metal formability. The formability of two-layer sheets depends on the material properties of their components such as strain hardening expo...

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Bibliographic Details
Published inInternational journal of advanced manufacturing technology Vol. 66; no. 5-8; pp. 809 - 823
Main Authors Jalali Aghchai, A., Shakeri, M., Mollaei Dariani, B.
Format Journal Article
LanguageEnglish
Published London Springer-Verlag 01.05.2013
Springer Nature B.V
Subjects
CAE) and Design
Computer-Aided Engineering (CAD
Engineering
Formability
Forming limit diagrams
Grain size
Hardening rate
Industrial and Production Engineering
Material properties
Mechanical Engineering
Media Management
Metal sheets
Necking
Original Article
Plastic instability
Stiffness coefficients
Strain hardening
Strain rate sensitivity
Two-layer metallic sheet
Forming limit diagram
Material properties
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Summary:Formability of two-layer metallic sheet is constrained by plastic instability and localized necking. Forming limit diagram (FLD) is an accepted measure of sheet metal formability. The formability of two-layer sheets depends on the material properties of their components such as strain hardening exponent, strain rate sensitivity coefficient, stiffness coefficient, and grain size. In this paper, the effects of the mentioned parameters on the FLD of two-layer sheets are investigated with a theoretical model which has been verified with an experimental approach. The results show that the forming limit of two-layer sheet lies between the forming limits of its components depends on their material properties.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-012-4368-9