PSI - Issue 47

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 47 (2023) 723–731

© 2023 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 the IGF27 chairpersons The article presents the process of load measurements on a bus in urban traffic using the example of a three-axle electric bus. Firstly, based on of the finite element simulation, key measurement locations on the bus were selected. They included both the superstructure and elements of the vehicle's suspension system. Stresses on the vehicle's supporting structure, accelerations on both sprung and unsprung masses, and forces in the suspension system were measured. The measurements in the first stage were focused on typical maneuvers such as sudden braking, turns, and speed bumps. The second part was focused on urban traffic. Together with the local transportation company, routes with a different spectrum of quality have been selected, and the test drives have been done. After this stage, the registered signals were analyzed. As a result, guidelines for fatigue calculations were developed, and road sections of key importance for fatigue strength were selected. Finally, they were scanned and will be used for dynamic fatigue analysis in the future. © 2023 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) 27th International Conference on Fracture and Structural Integrity (IGF27) Measurements of loads acting on an electric bus in urban traffic Bartłomiej Walczak a,b *, Piotr Malaca a,b , Dariusz Michalak b ,Wiesław J.Staszewski a a AGH University of Science and Technology, Faculty of Mechanical Engineering and Robotics ,30 Mickiewicza Avenue 30-059 Krakow, Poland b Solaris Bus & Coach sp. z o.o. , Obornicka 46,Bolechowo-Osiedle ,62-00 5 Owińska, Poland Abstract The design of city buses is a process in which a great role is given to optimizing the weight of the structure. In order to achieve this goal responsibly, all strength requirements must be taken into account, especially those related to fatigue. In the bus industry, there are no commonly available guidelines and standards for design and manufacturers must rely on their best knowledge. Proper selection of loads acting on the structure during normal operation is an essential step.

Peer-review under responsibility of the IGF27 chairpersons Keywords: Electric bus; fatigue analysis; load measurements; bus durability

* Corresponding author. Tel.: +48 61 667 27 94; E-mail address: bartlomiej.walczak@solarisbus.com

2452-3216 © 2023 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 the IGF27 chairpersons

2452-3216 © 2023 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 the IGF27 chairpersons 10.1016/j.prostr.2023.07.047