往复式压缩机振动的有限元数值分析与实验研究  

Numerical analysis and tests for vibration response of a reciprocating compressor

作　　者：仲崇明[1] 万泉[1] 蒋伟康[1] 

机构地区：[1]上海交通大学机械系统与振动国家重点实验室,上海200240

出　　处：《振动与冲击》2011年第5期156-160,共5页Journal of Vibration and Shock

摘　　要：对某型往复式冰箱压缩机的振动进行了有限元数值模拟,研究了曲轴-连杆-活塞运动系统产生的机械激励引起的压缩机振动响应。研究表明,曲轴-连杆-活塞运动系统是压缩机低频振动的主要激励来源,气体力主要引起压缩机泵体的水平扭转振动。通过仿真结果和试验的对比,验证了数值模拟方法应用于压缩机振动响应分析的可行性。通过数值模拟,可得到机械激励引起的壳体表面振速分布,为压缩机的机械噪声预测提供参考。The FEM method was used to study vibration response of a reciprocating compressor excited by mechanical excitations of a crank-connectingrod-piston system.It was shown that the crank-connectingrod-piston system is the main excitation source for low-frequency vibration of the reciprocating compressor,and the gas force is the main cause of the horizontally torsional vibration of its pump body.Some tests were implemented to validate the feasibility of the FEM method in the dynamic response analysis of the reciprocating compressor.The normal velocity distributions on the compressor shell due to the mechanical excitations were obtained with FEM method,on their basis the prediction of the mechanical noise became possible for the reciprocating compressor.

关 键 词：往复式压缩机 有限元法 振动响应 

分 类 号：TB532[理学—物理] TB652[理学—声学]