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Metal forming by plastic deformation processes

281-1 Metal forming by plastic deformation processes Materials and Mechanics - Apprenticeship S7
Lessons : 15 h TD : 15 h TP : 15 h Project : 0 h Total : 45 h
Co-ordinator : Gael Marnier
Prerequisite
2MAB1 - Elastoplasticity
2MAB2 - Metallurgy 1
Course Objectives
Provide the scientific and technological bases about the most common forming processes based on plastic deformation of metallic materials.
Obtain a precise understanding of the metal sheets forming by deep drawing.
Learn how to establish and use a forming limit diagram in order to predict the formability of metal parts by stamping.
Syllabus
Reminder of elastoplasticity: strain hardening curve, common stress-strain material laws and von Mises criterion.

Study of metal sheets anisotropy: origins of the plastic anisotropy, Lankford coefficient and modification of yield criterion.

Study of metal forming: formability caracterisation tests (Bulge, Erichsen, Swift ...), forming limit diagrams.

Industrial techniques of metal forming by plastic deformation: presentation of different industrial processes (rolling, wire drawing, forging, stamping...), initiation to basic calculations for rolling and wire drawing.
Practical work (TD or TP)
Experimental work :
- Identification of plastic anisotropy of metal sheets and study of its consequences on forming process
- Cold rolling and susbequent modifications of the mechanical properties of metals
- Material choice for deep drawing processes : influence of strain hardening coefficient and Lankford coefficient on the limit drawing ratio of metallic materials.
- Bending of metal sheets
Acquired skills
Fundamental skills on metal forming : mechanical analysis and strain calculations during forming processes.
Bibliography
Non renseigné

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