FEM simulation of a friction testing method based on combined forward conical can-backward straight can extrusion

T Nakamura, Niels Bay

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    A new friction testing method based on combined forward conical can-backward straight can extrusion is proposed in order to evaluate friction characteristics in severe metal forming operations. By this method the friction coefficient along the conical punch surface is determined knowing the friction coefficient along the die wall. The latter is determined by a combined forward and backward can extrusion of straight cans. Calibration curves determining the relationship between punch travel, can heights, and friction coefficient for the two rests are calculated based on a rigid-plastic FEM analysis. Experimental friction tests are carried out in a mechanical press with aluminium alloy A6061 as the workpiece material and different kinds of lubricants. They confirm that the theoretical analysis results irt reasonable values for the friction coefficient.
    Original languageEnglish
    JournalJournal of Tribology
    Volume120
    Issue number4
    Pages (from-to)716-723
    ISSN0742-4787
    DOIs
    Publication statusPublished - 1998

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