Abstract
Based on the actual parameters of the capacitor energy storage cabinet on the top of the monorail train, built the cabinet’s finite element model. Then, according to EN 12663-1, set the calibration conditions and fatigue working conditions. Carried out the simulation calculation under different conditions, respectively. The calculation results under the static calibration conditions show that the maximum equivalent stress of each node on the model is smaller than the allowable stress under all working conditions. Therefore, the static strength of the cabinet meets the design requirements. Plotted Goodman fatigue limit diagrams of the cabinet’s base metal and weld and modified them in the Smith form. Then plotted the average stress and stress amplitude under fatigue working conditions in the corresponding scatter diagram. The diagram s show that all points are located within the permitted area. The results show that the fatigue strength of the cabinet meets the requirements of design and use.
Highlights
In recent years, with the rapid development of urban rail transit, the application of capacitors as an energy storage element in rail vehicles is increasing
There is an interaction between the auxiliary equipment and the body of the rail vehicle, and the coupling vibration will greatly impact the operation of the vehicle
This paper provides a reference for the subsequent strength calculation and analysis of rail vehicle auxiliary equipment
Summary
With the rapid development of urban rail transit, the application of capacitors as an energy storage element in rail vehicles is increasing. It is of great significance to study the strength of capacitor energy storage cabinets for improving the running stability and safety of rail vehicles[2]. The structure design of railway vehicle auxiliary equipment is an essential part of the overall design of the train[3]. There are few researches on the strength of the auxiliary equipment on the top of the train. The capacitor energy storage cabinet on the roof of the monorail elevated train is taken as the research object, and its finite element model is built. Set fatigue strength conditions to calculate and analyze fatigue strength based on the Goodman fatigue limit diagram. This paper provides a reference for the subsequent strength calculation and analysis of rail vehicle auxiliary equipment
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