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Coupled Systems Mechanics
  Volume 1, Number 2, June 2012 , pages 165-182
DOI: https://doi.org/10.12989/csm.2012.1.2.165
 

Coupled temperature-displacement modeling to study the thermo-elastic instability in disc brakes
E. Ramkumar and M.M. Mayuram

 
Abstract
    Macroscopic hot spots formed due to the large thermal gradients at the surface of the disc brake rotor, make the rotor to fail or wear out early. Thermo-elastic deformation results in contact concentration, leading to the non uniform distribution of temperature making the disc susceptible to hot spot formation. The formation of one hot spot event will predispose the system to future hot spotting at the same location. This leads to the complete thermo-elastic instability in the disc brakes; multitude parameters are responsible for the thermo elastic instability. The predominant factor is the sliding velocity and above a certain sliding velocity the instability of the brake system occurs and hot spots is formed in the surface of the disc brake. Commercial finite element package ABAQUS is used to find the temperature distribution and the result is validated using Rowson
 
Key Words
    macroscopic hot spots; thermo elastic instability; Rowson
 
Address
E. Ramkumar and M.M. Mayuram : Department of Mechanical Engineering, IIT Madras, Chennai, India
 

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