Eventos Anais de eventos
MECSOL 2022
8th International Symposium on Solid Mechanics
Wheel heating model to evaluate brake failures
Submission Author:
Tulio Rodrigues , SP , Brazil
Co-Authors:
Tulio Rodrigues, Ramiro Jose Chamorro Coneo, Paola Gonzalez Ramos, Auteliano Antunes dos Santos Junior
Presenter: Tulio Rodrigues
doi://10.26678/ABCM.MECSOL2022.MSL22-0160
Abstract
Railroad brake systems may experience faults during work, such as wheel lockup or disproportional brake traction forces on the rail vehicle. These faults generate unequal braking in the wheels which, consequently, implies on different heating generated on the wheels-shoe interface. This phenomenon contributes to the development of uneven surfaces on the wheels. In extreme situations, rigging failures can even cause the wheels to overheat and thus lead to defects associated with overheating such as flaws and cavitation. In this work, a wheel heating model considering the effect on the brake failures is developed. The model can calculate the temperature along a route and the stresses generated by thermal loads, allowing the estimative of the wheel life in service. Results and analyzes are presented to demonstrate the accuracy of the proposed model.
Keywords
Railways, Heat transfer, Finite Element Method, Brake Rigging, Brake Temperature
