Moving load system with lubrication is commonly used in practical engineering.However,researches of the dynamic characteristics of the system are rarely reported.In this paper,a three-dimensional lubrication vibration coupling dynamic model is proposed to calculate the structural vibration response of the moving load system with lubrication.This model is composed of lubrication model and multi-flexible-body dynamic model.The two models are coupled by transmitting the calculation results each other,and solved by iterative algorithm.In addition,a corresponding test rig is designed and prepared.By comparing the structural vibration response calculated by the model with that measured in the experiment,the accuracy of the model is verified.The comparison results show that the model can accurately predict the damping vibration period and the amplitude attenuation time of the structure.The difference of vibration amplitude is less than 2.22 dB,which can meet the requirement of engineering.Finally,the effects of load moving speed on the structural vibration are analyzed by using the proposed model.The results show that the maximum acceleration amplitude of structural damping vibration is basically unchanged with the increase of load moving speed,but the damping vibration attenuation time decreases significantly.
关键词
振动与波/移动载荷/润滑/动力学建模/实验验证
Key words
vibration and wave/moving load/lubrication/dynamic modeling/experimental verification
维普
万方数据