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Title: Modeling and Simulation of Crash Energy Management for Passenger Rail Vehicle Equipment
???metadata.dc.contributor.*???: Zewudu Abdi (PhD)
Mandefro, Abebe
Keywords: Crash Energy Management;Passenger Rail;Rail Vehicle Equipment
Issue Date: Apr-2014
Publisher: AAU
Abstract: n this study, modeling and simulation of passenger rail-vehicle equipment which is able to accommodate the crash energy transferred into the train from fixed barrier and makes occupied spaces in the train safe from collision accident is done. The scope of the investigation is to model three dimensional rail-vehicle equipment for conventional and CEM using AutoCAD software; and importing to ANSYS Explicit Dynamics R-15 software. Then, simulation is done by applying different materials: Aluminum non-linear alloy and structural steel. The crush behaviors of a square thin-walled structural steel and Aluminum non-linear alloy materials were evaluated with different geometry, arrangements and sizes for given Rail vehicle equipment at a specific velocity. This methodology is used to explain the distinction between crush energy management and conventional trains in energy absorption and deformations during rail vehicle crash. The better property of Aluminum non-linear alloy material to absorb the kinetic energy of collision has made the train crashworthy than the previous conventional train. In relation with this, an analytical relation from the concept of Newton’s second law shows that improving crashworthiness at low speed is potentially better achieved by increasing the energy absorption of the vehicle even if this leads to an increase of mass. Additionally, including the collision energy absorbing structures has made the model to be a better structure in absorbing energy and thereby saving the life of occupants.Thus, the unoccupied spaces of the rail-vehicle car-body vanish by absorbing crash energy due vehicle crash and the occupied spaces are safe from deformation. The occupied areas of trains are safe after the collision at a given speed and mass. The model and simulation was done under impact test with a rigid wall and Aluminum nonlinear alloy material has got better crash energy management ability than conventional train which was made of Structural Steel uniformly through-out the structure.
Appears in Collections:Railway Engineering

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