PSI - Issue 24

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

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 24 (2019) 240–250

© 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the AIAS2019 organizers © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the AIAS2019 organizers PTWs usually are cheaper than cars, they have lower en rgy consumption and fewer polluting emissions than larger vehicles. So, over the last decade there has been a significant increase of PTW circulating park. When riders are involved in a accident, legs are the most frequently injured part of the body. The aim of this paper is to assess the performance of a preliminary concept of i flatable leg protector mounted on a mot rcycle. Five impact configur tions were simulated in a finite element virtual environment, with the car impacting laterally on the motorcycle. Both stationary and moving motorcycle crash s were performed, hile the car sp ed was 50 k /h in every configuratio . The rider was repr sented by a Hybrid III dummy model. Since the model was not validated for side impacts, a comparative analysis was perfor ed. A set of safety parameters was used to assess the performance of the evice. Their reduction was obtain d in specific impact conditions, although mixed with load increases. Despite a widespread param ter reduction was not achieved, the results demonstrated the potential of the proposed device for lower limb protection, and they allowed the identification of the most severe conditions to be used in future development © 2019 The Authors. Published by Elsevier B.V. This is an ope acces article under t CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the AIAS2019 organizers AIAS 2019 International Conference on Stress Analysis Preliminary effectiveness assessment of an airbag-based device for riders’ leg protection in side impacts Thomas Pallacci a, *, Niccolò Baldanzini a , Daniele Barbani a , Marco Pierini a a Department of Industrial Engineering, University Of Florence, Via di S.Marta 3, 50139 Firenze, Italy PTWs usually are cheaper than cars, they have lower energy consumption and fewer polluting emissions than larger vehicles. So, over the last decade there has been a significant increase of PTW circulating park. When riders are involved in an accident, legs are the most frequently injured part of the body. The aim of this paper is to assess the performance of a preliminary concept of inflatable leg protector mounted on a motorcycle. Five impact configurations were simulated in a finite element virtual environment, with the car impacting laterally on the motorcycle. Both stationary and moving motorcycle crashes were performed, while the car speed was 50 km/h in every configuration. The rider was represented by a Hybrid III dummy model. Since the model was not validated for side impacts, a comparative analysis was performed. A set of safety parameters was used to assess the performance of the device. Their reduction was obtained in specific impact conditions, although mixed with load increases. Despite a widespread parameter reduction was not achieved, the results demonstrated the potential of the proposed device for lower limb protection, and they allowed the identification of the most severe conditions to be used in future development AIAS 2019 International Conference on Stress Analysis Preliminary effectiveness assessment of an airbag-based device for riders’ leg protection in side impacts Thomas Pallacci a, *, Niccolò Baldanzini a , Daniele Barbani a , Marco Pierini a a Department of Industrial Engineering, University Of Florence, Via di S.Marta 3, 50139 Firenze, Italy Abstract Abstract

Keywords: Airbag; PTW; Leg protector; Lower limb injuries; Side impact. Keywords: Airbag; PTW; Leg protector; Lower limb injuries; Side impact.

* Corresponding author. Tel.: +39-055-275-8694. E-mail address: thomas.pallacci@unifi.it * Correspon ing author. Tel.: +39-055-275-8694. E-mail address: thomas.pallacci@unifi.it

2452-3216 © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the AIAS2019 organizers 2452-3216 © 2019 The Authors. Published by Elsevier B.V. This is an ope acces article under CC BY-NC-ND lic nse (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Peer-review under responsibility of the AIAS2019 organizers

2452-3216 © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the AIAS2019 organizers 10.1016/j.prostr.2020.02.021