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Unformatted text preview: ng, CAD, Vol. 22(7), pp 394-400, 1990. Geometrical Variations Management in a MultiDisciplinary Environment with the Jacobian-Torsor Model
A. Desrochers Université de Sherbrooke, 2500, boul. de l’Université J1K 2R1, Québec, Canada Alain.Desrochers@USherbrooke.ca Abstract: In recent years, several computational tools for tolerance specification and analysis have emerged to help the designer in the specification of geometrical product requirements. This paper proposes to broaden the scope of such a tool, called the Jacobian-Torsor model, so as to embrace a wider range of variations and uncertainties. In that perspective, the paper presents an original typology of geometrical variations and uncertainties. These variations are classified according to their own properties and features. Among the features that must be dealt with regarding variations and uncertainties are the following: cumulative versus independent and required versus random or predictable. In turn, the variations or uncertainties must themselves be identified...
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