In order to verify the applicability of metal rubber isolators in the field of rail transit,a fatigue life prediction method combining test and simulation is proposed.Firstly,the rigid-flex cou-pling dynamic model of vehicle-rail-floating plate is constructed,and the fatigue load spectrum of the isolator is obtained.Secondly,quasi-static and fatigue acceleration tests were carried out,and the rela-tionship between material stiffness and load loading times was derived.Finally,the simulation model of the isolator is constructed,and the life value of the isolator under fatigue load is studied.The results show that the predicted life value and the service life of the test of the metal rubber isolator exceed 3 mil-lion times,which meets the requirements of the vibration isolator of the floating plate bed of the sub-way.
关键词
金属橡胶隔振器/动力学/有限元/疲劳寿命
Key words
metal rubber vibration isolators/dynamics/finite element/fatigue life
维普
万方数据