Lookup NU author(s): Dr Francis Franklin
This is the authors' accepted manuscript of an article that has been published in its final definitive form by Springer, 2017.
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This paper describes verification process of numerical model of combined collision kinetic energy absorber of rail vehicles based on results of experimental investigations. Combined absorber works on the principle of shrinking- splitting the seamless tube. With the aim to choose the most appropriate tube geometry, the tubes of the different geometry of cross section were made and tested. Key geometry parts have the shape and length of the grooves along the inner tube wall. During the second phase of deformation comes to controlled splitting of the tube wall along these grooves. Experimental and numerical investigations were realized on the scaled samples. Using this type of absorber energy absorption occurs by friction between absorption elements and elastic-plastic deformation of the tube. Combining of two deformation processes gives a higher absorption power as well as compact dimensions of absorber which can be installed in a very limited space in the front part of the vehicle structure. Creating of the numerical model and numerical simulations of shrinking-splitting processes were realized using SolidWorks and ANSYS LS Dyna software packages. Results of experimental investigations and numerical simulations show very good agreement which verifies developed numerical model for use in further investigations in this field.
Author(s): Tanaskovic JD, Franklin FJ, Disic A, Miskovic Z
Publication type: Article
Publication status: Published
Journal: Experimental Techniques
Print publication date: 01/08/2017
Online publication date: 15/06/2017
Acceptance date: 06/05/2017
Date deposited: 28/09/2017
ISSN (print): 0732-8818
ISSN (electronic): 1747-1567
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