Valutazione delle lesioni nell’impatto ciclista adolescente -veicolocon simulazione multibody

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Abstract

[automatically translated] The impact situations and the dynamic cyclist and pedestrian are the essential information for the development of effective solutions to improve the protection of pedestrians and cyclists in the event of a collision with cars. The accident cases in Palermo, in recent years, occurred on urban roads (84%) involving adolescents (6.4%), it shows that cyclists usually have a higher impact position with respect to the pedestrian, with a higher proportion of for shock injuries in the area of the windscreen. This work is carried out dynamic simulation for the study of injuries to the head and adolescent chest, between a generic bicycle and a car model which has advantageous characteristics for the pedestrian or cyclist safety. The SimWise software (Visual Nastran) was used for multibody simulation of impact; the anthropomorphic model, the car and bikes are those used in previous works. The focus is on a teenager cyclist, because the relative lesion data are found in the literature with difficulty. The twelve test the full impact (car against cyclist) have as their main parameters: vehicle speed (20, 30, 40 and 50 km / h), with three different positions of the rider relative to the vehicle: front, side and rear. The position of the head strike (above the hood, in the windshield), as determined by the test crash, shows that the cyclist protection should be improved in the highest zone of the windscreen, than pedestrian. The head injury is analyzed using the HIC parameter and the chest wound is analyzed according to the criterion of 3 ms; the probability AIS 4 + is calculated, concluding that head injury is more dangerous in the event of pedestrian teenager, while the wound of the chest is more dangerous in the case of teenager cyclist. Moreover, the teenage rider has a greater chance of survival than the adult cyclist. Accidentology and simulations show that the windshield is a frequently impact position for the head and chest.
Original languageItalian
Pages (from-to)75-88
Number of pages14
JournalSCIENZE E RICERCHE
Publication statusPublished - 2016

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