Desenvolvimento e validação de metodologia para analise de vibrações torcionais em motores de combustão interna / Development and validation of a methodology for torsional vibrations analysis in internal combustion engines

AUTOR(ES)

Alexandre Schalch Mendes

DATA DE PUBLICAÇÃO

2005

RESUMO

The scope of this work is the study of the crankshaft torsional vibration phenomenon for internal combustion engines. As an example, the formulation will be applied to an engine for a vehicular application, manufactured by MWM Motores Diesel Ltda., with six cylinders in line configuration, four strokes and considering a rubber damper assembled to the component. From the torsional vibrations analysis, it is possible to ca1culatethe actuating torque in each crankshaft section. These loads can be applied as boundary conditions to a finite element model and with the consideration of the other existing loads it is possible to determine the fatigue cyc1e,to calculate the safety factor ofthe component. This is not the objective ofthis work, but it is possible to note the importance of the torsional vibrations analysis in the structural dimensioning of the crankshafts. The obtained results by the presented methodology will be compared to the measured values for the validation of the proposed mathematical model

ASSUNTO(S)

motores de combustão interna internal combustion engines

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