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Simulation of wear and contact pressure distribution at the pad-to-rotor interface in a disc brake using general purpose finite element analysis software
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Machine Elements.ORCID iD: 0000-0003-4461-0209
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Machine Design (Div.).
2009 (English)In: Wear, ISSN 0043-1648, E-ISSN 1873-2577, Vol. 267, no 12, 2243-2251 p.Article in journal (Refereed) Published
Abstract [en]

Passenger car disc brakes are safety-critical components whose performance depends strongly on contact conditions at the pad-to-rotor interface. The interface can be classified as a conformal dry sliding contact. During braking both brake pad and rotor surfaces are worn, affecting the useful life of the brake as well as its behavior. This paper discusses how wear of the pad-to-rotor interface can be predicted using general purpose finite element analysis software. A three-dimensional finite element model of the brake pad and the rotor is developed to calculate the pressure distribution in the pad-to-rotor contact. A wear simulation procedure based on a generalized form of Archard's wear law and explicit Euler integration is used to simulate the wear of the brake pad under steady-state drag conditions.

Place, publisher, year, edition, pages
2009. Vol. 267, no 12, 2243-2251 p.
Keyword [en]
Disc brake; Wear simulation; Finite element analysis; FEA; Sliding wear
National Category
Mechanical Engineering
URN: urn:nbn:se:kth:diva-9875DOI: 10.1016/j.wear.2009.09.004ISI: 000272810200013ScopusID: 2-s2.0-71849100622OAI: diva2:139532

Uppdaterad från konferensbidrag till artikel: 20100811 QC 20100811

Available from: 2009-01-23 Created: 2009-01-23 Last updated: 2016-05-12Bibliographically approved
In thesis
1. Interface modeling - friction and wear
Open this publication in new window or tab >>Interface modeling - friction and wear
2009 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The general trend toward increased use of computer models and simulations during product development calls for accurate and reliable product models. The function of many products relies on contact interfaces between interacting components. Simulating the behavior of such products requires accurate models of both components and interfaces. Depending on the purpose of the simulation, interface models of different degrees of detail are needed. In simulating very large systems with many interfaces, it might be computationally expensive to integrate detailed models of each individual interface. Condensed models, or abstractions, that describe the interface properties with the fewest degrees of freedom are therefore required. This thesis deals with the modeling and simulation of mechanical interfaces in a systems context. The five appended papers discuss the issue from both the simulation and tribological points of view. The aim is to study how friction and wear can be modeled in the behavioral simulation of technical systems and to discuss the convenience and applicability of using different types of models as building blocks of a system model in simulations. Paper A reviews existing friction models of sliding contacts under different running conditions. Paper B uses a simplified contact model, the elastic foundation model, to model friction in a boundary-lubricated rolling and sliding contact. The model is integrated into a dynamic rigid body model of a mechanical system, and the system behavior is simulated. Paper C discusses the application of the elastic foundation model to rough surface contact problems and investigates how the error in its results depends on surface roughness. Papers D and E address how the wear of the contact surfaces at the pad-to-rotor interface in a passenger car disc brake can be simulated using finite element analysis (FEA).

Place, publisher, year, edition, pages
Stockholm: KTH, 2009. 20 p.
Trita-MMK, ISSN 1400-1179 ; 2009:03
Interfaces, Models, Simulation, Friction, Wear
National Category
Other Materials Engineering
urn:nbn:se:kth:diva-9861 (URN)978-91-7415-215-9 (ISBN)
Public defence
2009-02-09, Flodissalen, Lindstedsvägen 26, Stockholm, 13:00 (English)
QC 20100811Available from: 2009-01-23 Created: 2009-01-20 Last updated: 2010-08-11Bibliographically approved

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