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Materials 2015, 8(10), 6893-6908; doi:10.3390/ma8105345

Study of a Steel’s Energy Absorption System for Heavy Quadricycles and Nonlinear Explicit Dynamic Analysis of its Behavior under Impact by FEM

1
Department of Mechanical Engineering, University of Vigo, Vigo 36203, Spain
2
Department of Mathematics, University of Oviedo, Faculty of Sciences, C/Calvo Sotelo s/n, Oviedo 33007, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Geminiano Mancusi
Received: 19 August 2015 / Accepted: 28 September 2015 / Published: 10 October 2015
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Abstract

Current knowledge of the behavior of heavy quadricycles under impact is still very poor. One of the most significant causes is the lack of energy absorption in the vehicle frame or its steel chassis structure. For this reason, special steels (with yield stresses equal to or greater than 350 MPa) are commonly used in the automotive industry due to their great strain hardening properties along the plastic zone, which allows good energy absorption under impact. This paper presents a proposal for a steel quadricycle energy absorption system which meets the percentages of energy absorption for conventional vehicles systems. This proposal is validated by explicit dynamics simulation, which will define the whole problem mathematically and verify behavior under impact at speeds of 40 km/h and 56 km/h using the finite element method (FEM). One of the main consequences of this study is that this FEM–based methodology can tackle high nonlinear problems like this one with success, avoiding the need to carry out experimental tests, with consequent economical savings since experimental tests are very expensive. Finally, the conclusions from this innovative research work are given. View Full-Text
Keywords: steel longitudinal energy absorption system; impact analysis; explicit dynamic analysis; finite element modelling; vehicle crashworthiness; quadricycles steel longitudinal energy absorption system; impact analysis; explicit dynamic analysis; finite element modelling; vehicle crashworthiness; quadricycles
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

López Campos, J.Á.; Segade Robleda, A.; Vilán Vilán, J.A.; García Nieto, P.J.; Blanco Cordero, J. Study of a Steel’s Energy Absorption System for Heavy Quadricycles and Nonlinear Explicit Dynamic Analysis of its Behavior under Impact by FEM. Materials 2015, 8, 6893-6908.

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