実稼働TPAを用いた建機キャブ応答点振動に及ぼす入力および共振系の影響把握手法について

抄録

In this study, an estimation method of the main factor of large vibration of the construction machine was considered by using modified operational transfer path analysis (OTPA) with principal compnent (PC) model. In the method, we attempted to determine which input force to the frame or the resonance of the rear frame made the high contributing PC to the response point vibration. Simple construction model was employed for the analysis and the vibration of cab and multiple points of the rear frame were measured simultaneously for applying OTPA. Through the mode shape correlation between the calculated high contributing PC mode at the operational condition and the vibration modes, main factor increasing the cab vibration could be estimated well.