Authors: A.A. Volosatov, D.A. Panasenkov, G.A. Arutyunyan, D.A. Pashkov, D.I. Zakrasovsky

Title of the article: Modeling of thermodynamic processes in disc brakes of mining machinery using the finite element method (part 1)

Year: 2024, Issue: 3, Pages: 65-77

Branch of knowledge: 2.5.6. Engineering technology

Index UDK: 629.017:629.018+629.3.027.3

DOI: 10.26730/1999-4125-2024-3-65-77

Abstract: Disc brakes in dump trucks are used for braking in case of an emergency. Due to the heavy weight of the dump truck and the operating conditions, such mechanisms must have stable and reliable braking characteristics. It is noted that the ability to calculate temperature fields in the braking mechanism at the early stages of design makes it possible to improve braking characteristics and reduce the development time of new machines. In this article, the finite element method is used to calculate temperature fields. Two approaches to modeling brake heating during emergency braking using FEM are considered. To accurately determine the temperatures of the braking mechanism elements, it is necessary to know the geometry of the entire mechanism, the ambient temperature, the law of changing the speed of the dump truck, the law of air flow around the braking mechanism, the properties of materials, etc., therefore, a modeling strategy has been chosen to accelerate calculations. The first stage of a numerical method has been developed to predict the temperature change of each element of the braking mechanism during emergency braking. The method consists of two stages. At the first stage, frictional heating is simulated, after which the resulting temperature field is used as the initial conditions for the second stage, where the distribution of thermal energy throughout the braking system is determined. The analytical calculation carried out confirms the correctness of the values of thermal power obtained numerically. Using this method, a study was conducted on a specific brake design. The result of the first stage is a calculated temperature field. The results obtained will be the initial data for the second stage

Key words: emergency braking friction heating FEM coupled thermomechanical process

Receiving date: 15.05.2024

Approval date: 29.05.2024

Publication date: 28.06.2024

CITE DOWNLOAD