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Methodology of porosity modeling for friction pad : Consequence on squeal Tribology International

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2017
auteur(s) Magnier Vincent; Roubin Emmanuel; Colliat Jean-Baptiste; Dufrenoy Philippe
journal (abréviation) Tribology International (Tribol Int)
volume (numéro) 109
pages 78 – 85
résumé Mechanical property is an important parameter of friction material as it influences contact distribution (tribological and thermo-mechanical behavior), dynamic behavior (and then squeal propensity). Due to the process, the percentage of porosity in the volume is near 10%. So, a friction pad has been characterized by a topographical study using X-ray. This step permits to obtain some information concerning the porosity. In a second step, a simplified pin-on-disc is modeled using finite element method considering initially homogenized friction material and secondly heterogeneous friction material including the pores. The pore distributions are generated using a representative random fields technique. The introduction of pores shows clearly some differences on dynamical behavior between homogenized and heterogeneous materials consideration.
mots clés Squeal; Morphological modeling; Finite Element Analysis; Heterogeneous material
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