Publications internationales
Résumé: Predicting the mechanical properties or analyzing the failure mode of fused deposition modeling products is challenging due to the layer-by-layer structure and the manufacturing parameters that can interact and be potentially conflicting. Understanding the effects and potential interactions of printing parameters, such as layer thickness, printing (build) orientation, infill density, and infill pattern, is crucial to enhancing the performance of in-service parts. This study investigates the main and interaction effects of layer thickness and printing orientation on the mechanical and failure properties in the case of two levels of infill density (100% and 40%). Tensile tests on 3D Printed PLA samples were carried out for this purpose. An ANOVA analysis was performed based on the experimental results to examine these effects on the mechanical properties. The primary findings demonstrate that the selected parameters' main and …
Résumé: During braking, a heat flow is generated by friction and heated the brake components, the heating causes thermal expansion in the disc and the pads and these expansions alternate the contact. This paper proposes a transient thermomechanical simulation of friction by the finite element method of disc/pads of a sport cars brake using ABAQUS. In this comparative study, three different ceramic composite materials (A359/SiC p20, Al6061/SiC, C/C-SiC) are used for the disc which is in friction with organic (C/C) lining bonded to steel back plates of the brake pads. This will allow us to emphasize the importance of the distribution and the variation of the temperature on the contact pressure and the stress field and the braking torque.