This thesis deals with a suspension design of a washing machine to decrease vibrational amplitudes of the tub. A 3-dimensional 6-degree-of-freedom model is established to simulate the dynamic behavior of the system. Static deflections of the model are calculated to get a suitable range of the spring constants. The transient response during acceleration and the stationary state of the wringing process are simulated with the model. The effect of a liquid balancer is also included. Parametric studies for the horizontal and vertical amplitude of vibration are then made. Appropriate design values for the stiffness and damping coefficient of the suspension system are suggested based on graphical data obtained. The approach is shown valuable for practical design.
