Study of vehicle speed estimation in traffic accidents related to a scooter type wheelchair with multi-body simulation /Studie zur Genauigkeit von Schätzungen der Fahrzeuggeschwindigkeit bei Unfällen mit Elektro-Rollstühlen anhand von Mehrkörpersimulation
Ryo Oga
NRIPS
Dr. Ryo Oga was received the doctoralcourse in material engineering from Nagoya University, Japan, in 2007.He is now a research scientist in NRIPS in Japanese Police.His research interest includes accident reconstruction technique and vehiclecrash worthiness.
Target
Electric powered wheel chairs are only onetransporter system for personal mobility which is included as pedestrian inJapan. The market size of electric powered wheel chair is 15 thousands peryear. Especially, scooter type... [ view full abstract ]
Electric powered wheel chairs are only onetransporter system for personal mobility which is included as pedestrian inJapan. The market size of electric powered wheel chair is 15 thousands peryear. Especially, scooter type wheel chairs sold are 13 thousands per year.
On the other hand, it was 180 cases thattraffic accidents related electric powered wheel chair were occurred each yearin Japan.
However, accident reconstruction techniquesfor wheel chair are not accumulated. Therefore, we focused on the relationshipbetween vehicle speed at collision and moving distance of wheel chair aftercollision for vehicle speed estimation.
Methods and Equipment Used
Physical crash tests were performed.Suzuki Senior car ET-4 series were used forwheel chair. Hybrid-III AM50 or AF05 were used as an occupant on the wheelchair.Front shapes of bullet vehicles were variedin bonnet, cabin over... [ view full abstract ]
Physical crash tests were performed.
Suzuki Senior car ET-4 series were used forwheel chair. Hybrid-III AM50 or AF05 were used as an occupant on the wheelchair.
Front shapes of bullet vehicles were variedin bonnet, cabin over engine (COE) and semi-COE.
Collision angles between wheel chairs andbullet vehicles were varied in 0 degree, 45 degree, 90 degree and 135 degree.Main vehicle speed at collision was defined at 20 km/h, which were varied from5 km/h to 55 km/h.
The simulation model made on PC-Crash ver.10.1. The models of bullet vehicles were DXF models in PC-Crash vehicle models.The model of wheel chair was built with multi-body on PC-Crash.
Authors
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Ryo Oga
(NRIPS)
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Hermann Steffan
(Graz University of Technology)
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Tetsuo Maki
(Tokyo City University)
Topic Area
Open forum
Session
SI » Simulation (10:50 - Friday, 20th October, Kleine Zaal)
