Effects of heat treatments on the microstructure and mechanical properties of a 6061 aluminium alloy

International audienceThis paper describes the mechanical behavior of the 6061-T6 aluminium alloy at room temperature for various previous thermal histories representative of an electron beam welding. A fast-heating device has been designed to control and apply thermal loadings on tensile specimens. Tensile tests show that the yield stress at ambient temperature decreases if the maximum temperature reached increases or if the heating rate decreases. This variation of the mechanical properties is the result of microstructural changes which have been observed by Transmission Electron Microscopy

Influence of roller bearing stiffness on squeeze film behavior including fluid flow turbulence and inertia effects

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Normal and Tangential Contact Between Anisotropic Materials

ASME/STLE 2011 Joint Tribology ConferenceLos Angeles, California, USA, Oct 24–26, 2011ISBN: 978-0-7918-5474-7International audienceA contact model using semi analytic methods, relying on elementary analytic solutions, has been developed. It is based on numeric techniques adapted to contact mechanics, with strong potential for inelastic, inhomogeneous or anisotropic problems. Recent developments aim to quantify displacements and stresses of an anisotropic material which is in contact with another anisotropic material. The influence of symmetry axes on the contact problem solution will be more specifically analyzed

Glissement dans les roulements à billes grande vitesse sous charges axiales et radiales

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Development of a three-dimensional semi-analytical elastic-plastic contact code

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Influence de la turbulence et des effets d'inertie sur les caractéristiques statiques et dynamiques des paliers amortisseurs

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Normal and Tangential Contact Between Anisotropic Materials With an Anisotropic Coating

Volume 4: Advanced Manufacturing Processes; Biomedical Engineering; Multiscale Mechanics of Biological Tissues; Sciences, Engineering and Education; Multiphysics; Emerging Technologies for Inspection and Reverse Engineering; Advanced Materials and TribologyNantes, France, July 2–4, 2012Conference Sponsors: InternationalISBN: 978-0-7918-4487-8International audienceA contact model using semi analytical methods, relying on elementary analytical solutions, has been developed. It is based on numerical techniques adapted to contact mechanics, with strong potential for inelastic, inhomogeneous or anisotropic problems. Recent developments aim to quantify displacements and stresses of an anisotropic half space with an anisotropic coating which is in contact with a rigid sphere. The influence of symmetry axes on the contact problem solution will be more specifically analyzed