Free Modal Experiment and Analysis of 4105 Diesel Engine Crankshaft Torsional-bending Coupling Vibration

摘要

In order to research the principle of crankshaft horizontal-bending vibration, free modal experiments of 4105 diesel engine crankshaft vibration was designed and done. Vibration parameters of free vibration, torsional vibration, vertical-bending vibration and horizontal-bending vibration were obtained respectively through different measurements points setting and motivation techniques. Through analysis of frequencies and models, a conclusion was drawn: the torsional vibration was just coupling with the horizontal-bending vibration.