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- W612468318 abstract "This paper extends the previous work by presenting actual crash simulations that calculate the forces that occur on two types of heavy vehicles involved in barrier crashes. The results can be compared to the simplistic estimates based upon the energy momentum approach. The result show that the average forces that exist are broadly in agreement with the simplified estimates. These considerations are directly relevant to road safety because it is widely accepted that a combination vehicle that stays together during a crash is likely to suffer less damage and cause less damage that one that separates. Therefore, the question of whether the coupling is likely to break is a central road-safety consideration. The paper will inform considerations about the necessary longitudinal strength of mechanical couplings. Simulations of a rigid-truck, a semi-trailer and a B-double truck striking an immovable barrier at various speeds and weights are presented to inform the considerations. The strength requirements of mechanical couplings are specified in technical standards such as UN ECE Regulation 55 and SAE standards J133 and J874. Surprisingly, none of these standards explicitly define a Factor-of-Safety. In the Australian experience, mechanical couplings are being used on longer and heavy multi-combination vehicles that were originally designed for single-trailer applications. It is argued that changes to the technical requirements in couplings rules are needed to explicitly introduce a Factor-of-Safety in addition to fatigue withstand considerations." @default.
- W612468318 created "2016-06-24" @default.
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- W612468318 date "2014-10-01" @default.
- W612468318 modified "2023-10-08" @default.
- W612468318 title "Heavy vehicle crash forces" @default.
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- W612468318 hasPublicationYear "2014" @default.
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