Title :
Dynamic Properties of Disk Brake Based on Thermo-elastic Instability Theory
Author :
Yang, Xun ; Wang, Jixin ; Liu, Ying
Author_Institution :
Coll. of Mech. Sci. & Eng., Jilin Univ., Changchun, China
Abstract :
Based on the thermo-elastic instability (TEI) theory and direct thermal-structural coupling method, the temperature increment and deformation of disk brake during an emergency braking process are analyzed. The simulation results indicate that the disc brake, before running-in, takes 3.35sec to decelerate from the initial speed of 100km/h to 0km/h, with 207°C maximum temperature increment, 8.29m/s2 average deceleration, 0.624 braking torque stability coefficient, all of which come up to the GB5763-1998. The fluctuation of braking torque, under the condition of ignoring initial disc-thickness variation (DTV) and installing DTV, is mainly because of the change of contact area caused by TEI.
Keywords :
braking; couplings; discs (structures); mechanical stability; thermoelasticity; torque; vehicle dynamics; braking torque stability coefficient; direct thermal structural coupling method; disc thickness variation; disk brake deformation; dynamic property; emergency braking process; temperature increment; thermoelastic instability theory; Angular velocity; Couplings; Finite element methods; Fluctuations; Rotors; Thermal stability; Torque; Disc brake; TEI; Thermal-structural coupling; Vehicle engineering; braking torque stability; dynamics simulation;
Conference_Titel :
Electrical and Control Engineering (ICECE), 2010 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6880-5
DOI :
10.1109/iCECE.2010.673
