Abstract：Abstract：The FEM method is used to study the vibration response of one reciprocating compressor due to the mechanical excitations caused by the crank-connecting rod-piston system. It is shown that the crank-connecting rod-piston mechanism system is the main excitation source for low-frequency vibration of the reciprocating compressor, and the gas force is the main reason for the horizontally torsional vibration of the pump body. Some tests are implemented to validate the feasibility of the FEM method in the dynamic response analysis of the reciprocating compressor. The normal velocity distribution on the compressor shell due to the mechanical excitations can be obtained by FEM method, on the basis of which the prediction of the mechanical noise becomes possible for the reciprocating compressor.
2011, Vol. 30 
