Contact Pressure Distribution on Friction Interface for Flexible Drum Brake Systems

2017-36-0005

05/24/2017

Features
Event
13th SAE Brasil International Brake Colloquium & Engineering Display
Authors Abstract
Content
Analytical models used to design most of drum brake systems assume rigid body behavior of shoes and drum, resulting in sinusoidal pressure distribution in the friction interface. This approach leads to various limitations and sometimes incoherent results at typical applications since brake components are highly deformable and the contact pressure distribution plays an important role on the brake system efficiency. This study addresses a numerical analysis of drum brake pressure distribution, using Finite Element Method and considering shoes and drum as flexible bodies. The model validation from experimental procedure, where brake components were instrumented in an inertial dynamometer test. Once the pressure distribution can not be accurately measured, this research uses strain field measurements to calibrate the numerical model. This model is nonlinear, implying in convergence difficulties. However, the simulation technique presented here is a powerful tool to investigate the deformation of brake components and their influence in the friction forces and thus in brake system efficiency. The validation through strain field proved to be an interesting alternative to compare numerical models and experimental results.
Meta TagsDetails
DOI
https://doi.org/10.4271/2017-36-0005
Pages
8
Citation
Antunes, D., and Masotti, D., "Contact Pressure Distribution on Friction Interface for Flexible Drum Brake Systems," SAE Technical Paper 2017-36-0005, 2017, https://doi.org/10.4271/2017-36-0005.
Additional Details
Publisher
Published
May 24, 2017
Product Code
2017-36-0005
Content Type
Technical Paper
Language
English