Design of an Impact Attenuator Using Alternative Material

Abstract:

ROJAS REINOSO, Edgar Vicente; ROMERO HIDALGO, Vicente Javier; PANCHA RAMOS, Johnny Marcelo and NEJER GUERREO, Jorge Mauricio. Design of an Impact Attenuator Using Alternative Material. Tecnura [online]. 2021, vol. 25, n. 67, pp. 71-85. Epub July 14, 2021. ISSN 0123-921X. https://doi. org/10.14483/22487638.15588. Objective: The present work shows the design and simulation of a front-level impact attenuator for a sedan-type vehicle. Its modeling was performed using SolidWorks software and simulation through Ansys Workbench software to analyze the behavior and component energy absorption during impact. Finally, the impact attenuator was scaled to validate the model. Methodology: This article presents the specialized design and simulation by modeling finite elements with a flat deformation problem of an impact attenuator in a deformation state. The frontal impact simulation was performed on the Explicit Dynamics module of the Ansys Workbench software using two material types: the PP-GF45 that originally comes in the Chevrolet Optra 1.8 sedan type vehicle, and the PLA-CF30. For testing purposes, the tests conducted out by the Latin NCAP and the UN R94 collision standard were considered as references since the company is governed by the approval of vehicles regarding safety in Latin America. The study was complemented with Charpy impact tests carried out at the laboratory of the Faculty of Mechanics in the Polytechnic School of Chimborazo according to ASTM D6110-04. For this purpose, it was necessary to extract five samples of each material. Results: During the analysis, characteristics such as lightness …

Año de publicación:

2021

Keywords:

Fuente:

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