Static characteristics analysis and lightweight optimization of the rotor of straw crusher
To solve the problems of high energy consumption and low efficiency of the straw crusher,the structural parameters of the key component rotor are designed and calculated.The coupling method of discrete element method and finite element method was used to analyze the stress and strain of the rotor under load condition.Based on the results of statics calculation,the topology optimization design was carried out under the premise of meeting the required stiffness and strength of the rotor.By analyzing the vibration characteristics of the optimized rotor,the working speed of the crusher avoiding resonance could be obtained.The results show that the strength and stiffness of the designed rotor of the straw crusher meet the usage requirements.After topology optimization,the quality of the rotor was reduced by 17.19%.After optimization,the stress of the rotor is uniform,and the stress and strain have no obvious change.According to the resonance analysis,when the rotational speed of the crusher is between 1 550-2 300 r/min,it can meet the processing requirements and is not prone to resonance.This study can provide a reference for the research and development of this kind of forage processing machinery and improve its working performance.
straw crusherrotorstatic analysistopology optimizationvibration characteristicsdiscrete element
NETL
NSTL
万方数据
