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Methodology of porosity modeling for friction pad: Consequence on squeal

Abstract : 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.
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Submitted on : Friday, December 21, 2018 - 9:55:34 AM
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Vincent Magnier, Emmanuel Roubin, Jean-Baptiste Colliat, Philippe Dufrenoy. Methodology of porosity modeling for friction pad: Consequence on squeal. Tribology International, Elsevier, 2017, 109 (78-85), ⟨10.1016/j.triboint.2016.12.026⟩. ⟨hal-01450382⟩



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