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Numerical Validation of the Combined Extrusion-Splitting Process of Energy Absorption Through Experimental Study

Lookup NU author(s): Dr Francis FranklinORCiD

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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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Abstract

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.

Publication metadata

Author(s): Tanaskovic JD, Franklin FJ, Disic A, Miskovic Z

Publication type: Article

Publication status: Published

Journal: Experimental Techniques

Year: 2017

Volume: 41

Issue: 4

Pages: 421-431

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

Publisher: Springer

URL: https://doi.org/10.1007/s40799-017-0185-2

DOI: 10.1007/s40799-017-0185-2

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