Research on the braking force model of brake discs based on thermal stress distribution
JIANG Fangyu
GAO Qiang
YAN Pengfei
ZAN Xiaolei
LI Yaning
Abstract：[Objective]To precisely calculate the brake disc braking force of a disc brake system,a brake disc braking force model based on the quasi-static temperature and thermal stress distribution of the brake pad under the influence of heat source was established.[Methods]First,the energy conversion mechanism during a single braking process was analyzed.Then,based on the quasi-static temperature and thermal stress distribution obtained during the braking process,a stress-braking force model was constructed using numerical methods.Finally,a simulation example was designed to verify the validity of the model.[Re-sults]The simulation results show that,in the later stages of braking,the temperature-braking force model curve is observed to be slightly higher than the stress-braking force model due to the influence of thermal accumulation effects.The stress-braking force model and the temperature-braking force model exhibit a high degree of consistency in their trends,with a maximum error of 305 N,an average error of 2.371 5 N,and the average relative error of only 0.012 7%.This model not only provides a basis for the numerical analysis of the braking force,but also provides new ideas and methods for the braking force detection.
Keywords：Disc brakeThermal couplingSimulationReal-time detection
Publication Date：2025-03-14
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 94-100 )