Calculation of Impact Resistance and Transient Analysis of Frame Structure
In order to test the reliability of cable arresting system by impact test method,this paper establishes the arresting dy-namic model of rail car based on energy method for the first time.The variation law of impact resistance under different indexes and different running speeds is analyzed,and the concrete expression used to describe the impact resistance of rail vehicle is given.On this basis,the transient response analysis of the frame under different working conditions is carried out.The results show that the impact resistance Fx increases rapidly at the initial stage of impact,and increases slowly or remains unchanged after a certain distance of rail vehicle displacement until the rail vehicle is stopped safely.The front core plate of the frame and the junction of the middle beam and the impact beam are stress concentrated areas,which are prone to damage.At the same initial impact velocity,the frame shape variable with the shortest stopping distance is obviously larger than the frame shape variable with the minimum maximum cable tension.
Energy MethodRail CarsImpact ResistanceTransient Response Analysis
NETL
NSTL
万方数据
维普
