Influence of break shoes wearing in drum break - numerical approach

• Autorzy: Damaziak K. , Jachimowicz J. , Małachowski J.
• Języki publikacji: EN

Abstrakty

EN

Braking system is one of the key components influencing passenger safety. Today, a design process of brakes is usually experience - driven, based on brake manufactures know - how. Using this approach, it is fairly difficult predict the brake components exact working condition or durability - parameters still more often required in a modern design process, what results in a rising demand for an exact simulation of a braking process. This paper presents numerical analyses of a drum brake. Both static and dynamic FE analyses were conducted in order to verify behaviour of numerical procedures affecting the braking process. The phenomena of heat generation by friction forces and the influence of a wear pattern was emphasized during dynamic calculations, while static analyses were focused on sensitivity to thermal properties of materials. FE models, including loads and boundary conditions, are described in details. Some of the data used during the simulation were taken from experiments. These laboratory tests are also briefly described in the paper. Based on the obtained results, it is shown that a numerical procedure converting sliding energy coming from friction to heat used in a coupled mechanical - thermal dynamic calculation works properly, but is very sensitive to material thermal properties. Proper FE modelling of the contact area and contact forces is also crucial. Unfortunately, due to lack of real material data, the presented results have quantitive character only.

Słowa kluczowe

EN

road transport; simulation; brakes; thermal dynamic computations

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2010
• Tom: Vol. 17, No. 2
• Strony: 81--87
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Damaziak K.

autor

Jachimowicz J.

autor

Małachowski J.

• Military University of Technology Faculty of Mechanical Engineering Department of Mechanics and Applied Computer Science Kaliskiego Street 2, 00-908 Warsaw, Poland tel:[phone], fax: [phone],

Bibliografia

• [1] Hohmann, C., Schiffner, K., Oerter, K., Reese, H., Contact analysis for drum brakes and disk brakes using ADINA, Computers and Structures 72, pp. 185-198, 1999.
• [2] Kleiber, M., Komputerowe metody mechaniki ciał stałych, Wydawnictwo Naukowe PWN, Warszawa 1995.
• [3] Hallquist, J. O., LS-DYNA Theoretical manual, Livemore Software Technology Corporation, 1998.
• [4] Anderson A. E., Knapp, R. A., Hot spotting in automotive friction systems, Wear, 135, pp. 319-337, 1990.
• [5] http://www.claasguss.de
• [6] Kajka, R., Harla, R., Raport 27/LW/2009, Instytut Lotnictwa, Warszawa 2009.