TAKING THE DEFORMATION INTO ACCOUNT FOR COMPONENTS' TOLERANCING

Grégory Cid , François Thiébaut (1) , Pierre Bourdet (1)

1 LURPA - Laboratoire Universitaire de Recherche en Production Automatisée

This paper deals with the tolerancing of assemblies composed of compliant components. Work in geometrical tolerancing is based on the assumption of rigid components. This model uses mechanism theory , setting in relative position of the components with geometric deviations from the nominal geometry, and giving geometrical equations relating to the system. The synthesis of both specifications and tolerances is carried out to provide the geometrical tolerancing of components of the system. Work relating to the mechanical behaviour of the systems is based mainly on digital models resulting from the CAD. They make possible to know, according to the boundary conditions in displacements and/or forces, the values of the stress, strain and displacements at the various points of the studied structure. Currently, the two studies are separated and give independent results. The influence of tolerancing on boundary conditions is not always negligible. The work presented here takes into account both the variations of geometry coming from tolerancing, and the displacements coming from the deformations of the components to provide the global geometric relations of the assembly.

Mots clés: tolerancing; deformation; assembly

Domaines: Génie mécanique [physics.class-ph]

Grégory Cid, François Thiébaut, Pierre Bourdet. TAKING THE DEFORMATION INTO ACCOUNT FOR COMPONENTS' TOLERANCING. The 5th International Conference on Integrated Design and Manufacturing in Mechanical Engineering, 2004, Bath, United Kingdom. ⟨hal-01226723⟩