Investigation of thermostructural behaviors of （thermostructural行为的调查）.pdf

Journal of Mechanical Science and Technology 26 (1) (2012) 235~240 /content/1738-494x DOI 10.1007/s12206-011-0921-y Investigation of thermo-structural behaviors of different ventilation applications on brake discs † * Mesut Duzgun Automotive Engineering Department, Faculty of Technology, Gazi University, 06500, Ankara, Turkey (Manuscript Received November 12, 2010; Revised July 20, 2011; Accepted September 18, 2011) Abstract One of the most common problems related to brake discs is overheating, which negatively affects braking performance especially un- der the continuous braking conditions of vehicles. Ventilation applications on brake discs can significantly improve the brake system performance by reducing the heating of the discs. In this study, the thermal behaviors of ventilated brake discs using three different con- figurations were investigated at continuous brake conditions in terms of heat generation and thermal stresses with finite element analysis. The results were compared with a solid disc. Heat generation on solid brake discs reduced to a maximum of 24% with ventilation appli- cations. The experimental study indicated finite element temperature analysis results in the range between 1.13% and 10.87%. However, thermal stress formations were higher with ventilated brake discs in comparison to those with solid discs. Keywords : Brake discs; Heat generation; Thermo-structural behaviors; Ventilation applications