Application of rigid flexible coupling technology in vibration response analysis of washing machine

The dynamic response of the box and suspension system is one of the most important factors affecting the vibration and noise of the washing machine. To ensure the accuracy of dynamic analysis, a rigid-flexible coupling model was put forward and established, enabling the acquisition of the load responses of flexible box and the dynamic characteristics of suspension system. The free vibrations of the washing machine box were analyzed, and the effective natural frequencies and modes were obtained. The modal neutral file was imported into ADAMS, where the rigid elements were replaced and spring and damping constraints were set. The dynamic responses of the center of mass displacement and load of the suspension system under different spring stiffness and damping system conditions were analyzed, which can provide important basis for optimizing the vibration isolation performance. The results show that the first-order natural frequency of the box exceeds the maximum excitation frequency, and the maximum stress is mainly distributed in the joints of the sheet metal.