Temperature processes at two sliding surfaces subjected to dry friction

0421444 - ÚT 2014 RIV SK eng J - Článek v odborném periodiku
Půst, Ladislav - Pešek, Luděk - Cibulka, Jan - Bula, Vítězslav
Temperature processes at two sliding surfaces subjected to dry friction.
Strojnický časopis. Roč. 63, 5/6 (2012), s. 277-292. ISSN 0039-2472
Grant CEP: GA ČR GA101/09/1166
Institucionální podpora: RVO:61388998
Klíčová slova: dry friction * vibration damping * experimental set * increase of temperature * lost energy
Kód oboru RIV: BI - Akustika a kmity

Application of dry friction damping contact is very often used for damping of turbine blades vibration. This problem is intensively studied in our Institute for several years, but the deficiency of knowledge of special material’s friction characteristics introduces serious uncertainty into the results of research, particularly for the friction connection with periodic relative motion. Therefore, laboratory experimental equipment has been designed and realized. Results of the first set of measurement are presented and discussed. Friction of double steel blade material and overlay of tungsten carbide was investigated for various thrust forces and frequencies of relative motion at the simultaneous measurement of temperatures in three points near the friction surface. An increase of temperature after 25 s of friction run, friction coefficient, friction force, dissipated energy in one cycle during 1 s, entire energy during the friction run, lost power, and energy for 1 oC temperature increase in various conditions were ascertained.
Trvalý link: http://hdl.handle.net/11104/0228601