3. Plastic deformation modes and contact conditions
3.1 State of stress and deformation of a metal sheet
In the forming of a sheet, the stress vector T3 applied to either of its faces has as its normal component the opposite of the contact pressure p and as its tangential component the frictional cission, which can always be written τ = µp, with µthe Coulomb coefficient of friction; T3 has a modulus small compared to that of a stress vector associated with a facet of normal parallel to the sheet surface (
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Plastic deformation modes and contact conditions
Friction tests
Bibliography
- (1) - AITA (S.), DI PASQUALE (E.), HAUGH (E.) - Sheet metal forming simulation and process optimization methodology. - Actes du Séminaire International ESI PAM 91, Paris, 7-8 nov. 1991
- (2) - BAY (N.), OLSSON (D.D.), ANDREASEN (J.L. - Lubricant test method for sheet metal forming, - Trib. Int. 41 p....
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