| The dynamic behaviors of a main drive system system(a crankshaft-rolling-bearing system) in a W-type piston compressor are studied by ADAMS, a special software for dynamical simulation.the dynamical simulating models of both the main drive system system with rigid crankshaft and the main drive system system with flexible crankshaft are respectively built in ADAMS. The dynamic response of the bearing journal center and dynamic reacting forces of the two rolling bearings are obtained on rated operating condition.Second,The dynamical simulating models of a main drive system with flexible crankshaft in a W-type compressor considering friction of joints are studied by ADAMS,its dynamic behaviors are studied.The dynamic response of Kinetic parameters and the friction curve of joints are obtained on rated operating condition,and Dynamic variation of the mechanical efficiency of the compressor are also revealed. A significant effect of joins friction on dynamic reacting forces of the two rolling bearings and the crankshaft journal center displacement response.The simulation results are premise condition to optimize the dynamic behaviors and mechanical efficiency of reciprocating compressor.Third,The mathematical model of the main drive system with flexible crankshaft for dynamic optimization is presented,its objective function is weighted sum of the amplitude of the crankshaft journal center in the two bearings, the design variable are the angle of cylinder lines and rotation speed of crankshaft. The parametric simulating model is constructed in ADAMS to search the optimum solution. The relation between the design variable and objective value is disclosed through ’Optimization’,which is a function module in the design evaluation tools of ADAMS.Numerical results are available for the dynamic design of piston compressor.Fourth,The mathematical model of the main drive system in a W-type compressor with friction of joints for dynamic optimization is presented.its objective function is mechanical efficiency, the design variable are the angle of cylinder lines and the rotation speed of crankshaft.The parametric simulating model is constructed in ADAMS to search the optimum solution. The relation between the design variable and objective value is disclosed.Numerical results are available for improving the efficiency of compressor.Fifth,The mathematical model of a main drive system in a W-type compressor with friction of joints for dynamic optimization is used again.its objective function is mechanical efficiency and weighted sum of the amplitude of the crankshaft journal center in the two bearings,the design variable are the angle of cylinder lines and the rotation speed of crankshaft.The parametric simulating model is constructed in ADAMS to search the optimum solution. The relation between the design variable and objective value is disclosed.Numerical results have a certain reference value for multi-objective optimization design of compressor.Finally, the prime task and the innovation in this article are summarized, and some views for the further parameter optimizing research of a main drive system system in a compressor are proposed. |
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