NDLI: Roof Crush Resistance and Rollover Strength of a Paratransit Bus

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Roof Crush Resistance and Rollover Strength of a Paratransit Bus

Content Provider	Semantic Scholar
Author	Bojanowski, Cezary Gepner, Bronislaw Kwasniewski, Leslaw Rawl, Christopher Franklin Wekezer, Jerry W.
Copyright Year	2011
Abstract	Paratransit buses constitute a special group of veh icles in the US due to their smaller size, two-step assembly process, and their use for complementary services t o the regular scheduled transit routes. Due to thei r uniqueness these buses lack national crashworthiness standards specifically dedicated to the paratransit fleet. Several states in the US adopted the quasi-static symmetric roof load ing procedure according to the standard FMVSS 220 f or testing the integrity of the paratransit buses. However, as many researchers point out, the dynamic rollover t est according to UN-ECE Regulation 66 (ECE-R66), which was approv ed by more than forty countries in the world, (excl uding the US), may provide more realistic assessment of t he bus strength. This paper provides comparison of the numerically astrength of the paratransit bus according t o the two standards in explicit FE simulations using LS-DYNA® /MPP. The FE model used in this study was previousl y validated through comparison of its simulated behav ior with response of the bus in the full scale rollover test conducted at the Florida Department of Transportati on testing facility (Tallahassee, FL, USA, 2010). The results show that the final assessment of the b us crashworthiness from both procedures can be dive rgent. Although the tested bus passes the quasi-static FMV SS 220 test, the same bus fails the dynamic rollove r procedure of ECE-R66 test. While the paratransit fleet is out numbered by the regular transit buses, and experime ntal testing of the buses seems to be prohibitively expensive to lo cal manufacturers, the FE simulations provide viabl e insight into the bus strength.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://www.dynamore.de/de/download/papers/konferenz11/papers/session1-paper4.pdf/at_download/file
Alternate Webpage(s)	https://www.tracc.anl.gov/images/TRACC/files/Session1_Paper4.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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