PSI - Issue 37

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2019) 000 – 000 Available online at www.sciencedirect.com ScienceDirect

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ScienceDirect

Procedia Structural Integrity 37 (2022) 668–675

© 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Pedro Miguel Guimaraes Pires Moreira Abstract A bus rollover accounted for one of the most severe crashes that would lead to a large number of fatalities and injured occupants. This study intends to investigate the structural behavior of passenger buses submitted to a rollover test in accordance with the United Nations Economic Commission for Europe (UNECE) Regulation No. 66. It aims at establishment of passive safety solutions of the bus. Although this regulation only applies to Vehicles M3 Class II/III, it intends to provide solutions applied on Vehicle M3 Class I, city busses. The rollover simulation is performed by means of an explicit dynamic analysis via Finite Element Method (FEM) formulations validated by experimental data. As a result, the force-displacement curve is characterized and the internal energy released by the studied bus section during loading is obtained and compared to the value recommended by R66 regulation. The outcome of this work contributes to assess the bus structural integrity and propose the passive safety solutions if necessary. © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Pedro Miguel Guimaraes Pires Moreira Keywords: ECE R66; Rollover test; Experimental Mechanics; FEM; Transit Bus. Introduction 1. Overview Buses remain the most widely used means of public transportation, serving cities as well as suburban and rural areas. 20 . ed V T r r ICSI 2021 The 4 th International Conference on Structural Integrity Passive Safety Solutions on Transit Buses: Experimental and Numerical Analyses Behzad V. Farahani a *, Nuno V. Ramos a , Pedro M. G. P. Moreira a , Rafael Cunha b , André Costa b , Ricardo Maia b , Rui M. Rodrigues b a INEGI – Institute of Science and Innovation in Mechanical and Industrial Engineering, FEUP, R. Dr. Roberto Frias 400, 4200-465 Porto, Portugal. b CaetanoBus – Av. Vasco da Gama, 1410, 4431-901 Vila Nova de Gaia, Portugal. �

* Corresponding author. Tel.: +351 938096044 E-mail address: behzad.farahani@fe.up.pt

2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Pedro Miguel Guimaraes Pires Moreira

2452-3216 © 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Pedro Miguel Guimaraes Pires Moreira 10.1016/j.prostr.2022.01.136