6533b856fe1ef96bd12b26a1

RESEARCH PRODUCT

Validation of frictional studies by double-cup extrusion tests in cold-forming

L. CannizzaroF. GabrielliArchimede ForcelleseA. Barcellona

subject

Materials scienceMechanical EngineeringMetallurgyTest methodCompression (physics)Industrial and Manufacturing EngineeringFinite element methodForgingvisual_artAluminium alloyvisual_art.visual_art_mediumLubricationComputer Science::Programming LanguagesExtrusionComposite materialLubricant

description

Abstract Studies on frictional conditions in cold-forming have shown that, for a given lubricant, friction factor values are strongly affected by the test method. In the present paper, different cold-forging processes of an aluminium alloy, are modelled by a FEM numerical code using the m values obtained by both the double cup extrusion and ring compression tests. It appears that the m values given by the ring tests can be effectively used in the simulation of upsetting processes, while the m values derived by the double cup extrusion tests are more appropriate for predictions in extrusion and closed-die forging operations.

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