Abstract
Reciprocating compressors have much repetition of maintenance as compared with other compression and long-term continuous operation is desired. In practice, the troubles of breakdowns have occurred in the connecting parts during operation. Thus, the importance is to understand the effects of the rigidity of the connecting parts on the dynamic behavior in reciprocating compressors. To this end, the present study treated the multi-body dynamics of the crankshaft-piston system using an analytical model with variable spring constants at the connecting parts. By the experimental measurements and simulation results confirmed the common resonance frequency. Further, the resonance peaks are consistent with the natural frequencies. From this, we may be able to estimate the internal state by simulation of the dynamic model.
