20.500.12556/RUL-105228 The importance of friction coefficient between vehicle tyres and concrete safety barrier to vehicle rollover FE analysis study The most important mechanical factors in an impact scenario of a vehicle into a concrete safety barrier are vehicle speed, the impact angle, the static stability factor of the vehicle as well as the concrete safety barrier design and conditions. Concrete safety barriers (CSB) are primarily designed to minimize vehicle damage by allowing the vehicle to be lifted when riding up on the lower slope and then redirected back on to the road. In some cases, though, the vehicle-CSB contact might end up with a rollover often with fatal consequences. To reduce the rollover risk, different concrete barrier shapes were designed in the past while omitting the importance of the friction coefficient between the tyre and barrier. Therefore, the aim of this paper is to research and emphasize the importance of the friction coefficient between the vehicle tyres and the CSB in rollover accidents. For that purpose, a series of Finite Element analyses were performed using different values of the friction coefficient between the vehicle tyres and the CSB. Experimental measurements of the coefficient of friction between the rubber and CSB blocks of different surface were additionally performed in dry and wet conditions in order to examine the real onsite friction characteristics. The results show that the coefficient of friction can have a crucial impact in vehicle rollover scenarios and should therefore be kept as low as possible by the concrete safety barriers manufacturers and maintainers. concrete safety barriers rollover friction simulation finite element method betonske varnostne pregrade prevračanje trenje simulacija metoda končnih elementov true false false Angleški jezik Slovenski jezik Članek v reviji 2018-11-12 15:08:08 2018-11-12 15:08:08 2026-09-03 04:37:01 0000-00-00 00:00:00 2018 0 0 Str. 753-762 iss. 12 Vol. 64 2018 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 62-783.3(045) 0039-2480 10.5545/sv-jme.2018.5290 16220699 762116 5290-30742-1-PB.pdf 5290-30742-1-PB.pdf 1 4B715A6630B279C4BEACA87C8C7A44DA 6fa878ef923e844f2ea7ff280abcdada3b19636f20bef4cb696c2db708f81a81 5b29af7c-a545-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=245625 https://www.sv-jme.eu/?ns_articles_pdf=/ns_articles/files/ojs/5290/public/5290-30742-1-PB.pdf&id=6225 0 da0f04b4-fa6c-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=200389 Fakulteta za strojništvo Strojniški vestnik 0 0 0