Methodology of porosity modeling for friction pad: Consequence on squeal

Vincent Magnier (1, 2) , Emmanuel Roubin (3, 4) , Jean-Baptiste Colliat (2, 1) , Philippe Dufrenoy (2, 1)

1 Université de Lille, Sciences et Technologies
2 LML - Laboratoire de Mécanique de Lille - FRE 3723
3 3SR - Laboratoire sols, solides, structures - risques [Grenoble]
4 RV - Risques, Vulnérabilité des structures et comportement mécanique des matériaux

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: Heterogeneous material; Squeal; Morphological modeling; Finite Element Analysis

Domaines: Sciences de l'ingénieur [physics]

Vincent Magnier, Emmanuel Roubin, Jean-Baptiste Colliat, Philippe Dufrenoy. Methodology of porosity modeling for friction pad: Consequence on squeal. Tribology International, 2017, 109 (78-85), ⟨10.1016/j.triboint.2016.12.026⟩. ⟨hal-01450382⟩