Dynamic Modeling and Analysis of the Washing Machine System with an Automatic Balancer

자동 밸런서를 갖는 세탁기 시스템의 동력학 모델링 및 해석

  • 오혁진 (인제대학교 대학원 기계공학과) ;
  • 이우식 (인제대학교 기계공학과)
  • Published : 2004.08.01


The structural unbalance mass and laundry are the important sources of the severe vibrations of automatic washing machines. In this paper, a mathematical model is developed for the dynamic analysis of the vertical axis automatic washing machines of pulsator-type. In the model, the rigid body motion of tub assembly is represented by six degrees of freedom and the dynamics of automatic hydraulic balancer is represented by one degree of freedom. The fundamental elastic modes of the tub shell and four suspension bars are also taken into account in the mathematical model, based on analytical and experimental modal analysis results. The 12 degrees of freedom equations of motion are derived by using the Lagrange's equations and the present dynamic model is evaluated by comparing the numerical simulation results with experimentally measured data.


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