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Modal Properties of 6-cylinder Tractor Engine Powertrain
Tato diplomová práce uvádĂ dynamiku klikovĂ©ho mechanismu šestiválcovĂ©ho Ĺ™adovĂ©ho motoru za účelem návrhu klikovĂ©ho hĹ™Ădele v CAD programu Pro/Engineer. Následuje popis vibracĂ klikovĂ©ho mechanismu a analytickĂ˝ vĂ˝poÄŤet jeho torznĂch vibracĂ. Hlavnà část diplomovĂ© práce se pak zabĂ˝vá konverzĂ hĹ™Ădele do koneÄŤno-prvkovĂ©ho modelu v programu ANSYS a jeho importem do prostĹ™edĂ Adams/Engine. V tom je provedena modálnĂ analĂ˝za klikovĂ©ho ĂşstrojĂ pro zĂskánĂ vlastnĂch frekvencĂ a tvarĹŻ. Na konec práce je porovnán vĂ˝stup z analytickĂ©ho Ĺ™ešenĂ a vĂ˝sledky z multi-body systĂ©mu.This master’s thesis introduces cranktrain dynamics of the inline 6-cylinder diesel engine in order to design a crankshaft in CAD software Pro/Engineer. Follows a description of cranktrain vibrations and analytical calculation of its torsional vibration. Main part of the master’s thesis deals with conversion of the crankshaft to a finite element model in program ANSYS and its import to Adams/Engine interface. Further, a linear analysis is performed to obtain natural frequencies and inherent shapes of the cranktrain. At the end of the thesis the analytical approach solution and solution from multi-body system are compared.
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