Study On Dynamic Analysis And Robust Optimization Of Wave-wheel Dehydration

Vibration and noise is one of the important indicators to evaluate the performance of washing machines.The severe vibration of the washing machine during the dehydration phase has a negative impact on people's lives and the development of the washing machine industry.In this paper,a certain type of waveform dehydrator as the research object,focusing on reducing the vibration of the suspension system,cabinet and suspension system,the two major components of waveform dehydrator,were studied.Cabinets is the framework of the rotor system of the waveform dehydrator and a key component of the dynamic performance of the dehydrator.In this paper,combined with finite element modal analysis and experimental modal test,modal analysis of cabinet is carried out.According to the comparison of the analysis results and the working frequency of the waveform dehydrator come to a conclusion that waveform dehydrator will not generate resonance due to the cabinet at the stable dehydration stage.Suspension system parameters have an important impact on the vibration level of the pulsator.In this paper,the dynamic equations of the suspension system of the waveform dehydrator are modeled,verified and solved.Based on the sensitivity analysis method,sensitivity about system amplitude of stiffness parameters,damping parameters and installation positions of the suspension elements are analyzed.Secondly,based on ADAMS,the virtual prototype model of the waveform dehydrator is established,and the experimental data is used to verify the model.Verification results show that the virtual prototype model has certain reliability.Finally,a rigid-flexible coupled model of a waveform dehydrator is established by combining the finite element model of cabinet and the ADAMS virtual prototype model.And based on this model,the Chebyshev interval analysis method was used to conduct a robust optimization design of the waveform dehydrator.The optimization results show that the vibration of the waveform dehydrator has been improved significantly.