On the feasibility of life-saving locomotive bumpers
| Autor: | Paraic M. Kelly, Brad Paden, David Bothman, Ciaran K. Simms, Jacob Hines |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Engineering
Acceleration Poison control Human Factors and Ergonomics Context (language use) Pedestrian Automotive engineering 0502 economics and business Craniocerebral Trauma Humans 0501 psychology and cognitive sciences Locomotive bumper Safety Risk Reliability and Quality Railroads 050107 human factors Pedestrians 050210 logistics & transportation business.industry Protective Devices 05 social sciences Head injury criterion Public Health Environmental and Occupational Health Oblique case Accidents Pedestrian protection Feasibility Studies Railroad safety Head (vessel) Automobile Accident Safety business Law |
| Zdroj: | Accident Analysis & Prevention. 89:103-110 |
| ISSN: | 0001-4575 |
| Popis: | Motivated by the thousands of pedestrians killed each year in train impacts, this paper investigates the life-saving capability of four high-level locomotive bumper concepts. The head motions produced by the four concepts are modeled as one or two square acceleration pulses and are analyzed using the Head Injury Criterion (HIC). Surprisingly, the analyses show that all four concepts can achieve HIC values of less than 200 for an impact with a locomotive traveling at 100km/h. Two of the concepts eject the pedestrian trackside with at a velocity of roughly 40km/h and the risk of ground-impact injury is discussed in the context of related automobile accident data. The computed bumper lengths are a fraction of the overall length of a locomotive and are thus feasible for practical implementation. One concept involves an oblique impact and the potential for rotational head injury is analyzed. This basic feasibility research motivates future investigations into the detailed design of bumper shapes, multi-body pedestrian simulations, and finite-element injury models. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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