Analysis of heat conduction in a drum brake system of the wheeled armored personnel carriers

This paper is an integrated study performed over the Braking System of the Wheeled Armored Personnel Carriers. It mainly aims to analyze the heat transfer process which is present in almost any industrial and natural process. The vehicle drum brake systems can generate extremely high temperatures un...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2015-11, Vol.95 (1), p.12039
Main Authors: Puncioiu, A M, Truta, M, Vedinas, I, Marinescu, M, Vinturis, V
Format: Article
Language:English
Subjects:
Armored vehicles
Brake drums
Braking
Braking systems
CAD
Carriers
Coefficient of friction
Coefficient of variation
Computer aided design
Conduction heating
Conductive heat transfer
Contact pressure
Data analysis
Drum brakes
Finite element method
Friction
Heat
Heat transfer
High temperature
Kinetic energy
Mathematical analysis
Mathematical models
Mechanical properties
Obstacles
Personnel
Pressure distribution
Rough terrain
Simulation
Stress concentration
Temperature distribution
Thermal analysis
Thermal energy
Vehicle wheels
Vehicles
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Summary:This paper is an integrated study performed over the Braking System of the Wheeled Armored Personnel Carriers. It mainly aims to analyze the heat transfer process which is present in almost any industrial and natural process. The vehicle drum brake systems can generate extremely high temperatures under high but short duration braking loads or under relatively light but continuous braking. For the proper conduct of the special vehicles mission in rough terrain, we are talking about, on one hand, the importance of the possibility of immobilization and retaining position and, on the other hand, during the braking process, the importance movement stability and reversibility or reversibility, to an encounter with an obstacle. Heat transfer processes influence the performance of the braking system. In the braking phase, kinetic energy transforms into thermal energy resulting in intense heating and high temperature states of analyzed vehicle wheels. In the present work a finite element model for the temperature distribution in a brake drum is developed, by employing commercial finite element software, ANSYS. These structural and thermal FEA models will simulate entire braking event. The heat generated during braking causes distortion which modifies thermoelastic contact pressure distribution drum-shoe interface. In order to capture the effect of heat, a transient thermal analysis is performed in order to predict the temperature distribution transitional brake components. Drum brakes are checked both mechanical and thermal. These tests aim to establish their sustainability in terms of wear and the variation coefficient of friction between the friction surfaces with increasing temperature. Modeling using simulation programs led eventually to the establishment of actual thermal load of the mechanism of brake components. It was drawn the efficiency characteristic by plotting the coefficient of effectiveness relative to the coefficient of friction shoe-drum. Thus induced thermal loads determine thermo mechanical behavior of the structure of wheels. Study the transfer of heat generated during braking is useful because results can improve and validate existing theory or may lead to the development of a mathematical model to simulate the behavior of the brake system for various tactical and operational situations. Conclusions of this paper are relevant because theoretical data analysis results are validated by experimental research.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/95/1/012039