Reconstruction of a real-world car-to-pedestrian collision using geomatics techniques and numerical simulations |
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| Affiliation: | 1. Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Academy of Forensic Science, Ministry of Justice, Shanghai, 200063, People''s Republic of China;2. School of Forensic Medicine, Guizhou Medical University, 4 Beijing Road, Guiyang, China;1. Department of Forensic Medicine and Toxicology, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India;2. Department of Forensic Medicine and Toxicology, Dr Sampurnanand Medical College, Jodhpur, India;3. Department of Pathology and Lab Medicine, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India;1. Department of Forensic Medicine, Faculty of Medicine, University of Kelaniya, Ragama, Sri Lanka;2. Office of the Judicial Medical Officer, Colombo North Teaching Hospital, Ragama, Sri Lanka;1. Division of Forensic Dentistry, Faculdade Sao Leopoldo Mandic, Brazil;2. Post-Graduate Program in Dentistry, School of Dentistry, Federal University of Uberlândia, Brazil;3. School of Dentistry, Federal University of Uberlândia, Brazil;4. Crime Scene Investigation, General Institute of Forensics, Santa Catarina, Brazil;5. Division of Preventive and Community Dentistry, School of Dentistry, Federal University of Uberlândia, Brazil;6. Department of Therapeutic Stomatology, Sechenov University, Russia;1. FCFPSL–Professor in Forensic Medicine, Department of Forensic Medicine, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka;2. Consultant Judicial Medical Officer, Teaching Hospital, Kandy, Kandy, Sri Lanka |
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| Abstract: | The aim of this study is to provide an improved method for traffic accident reconstruction based on geomatics techniques and numerical simulations. A combination of various techniques was used. First, an unmanned aerial vehicle (UAV), laser scanner and structured-light scanner were used to obtain information on the accident scene, vehicle and victim. The collected traces provided detailed initial impact conditions for subsequent numerical simulations. Then, multi-body system (MBS) simulations were conducted to reconstruct the kinematics of the car-to-pedestrian collision. Finally, a finite element (FE) simulation using the THUMS model was performed to predict injuries. A real-life vehicle-pedestrian collision was used to verify the feasibility and effectiveness of this method. The reconstruction result revealed that the kinematic and injury predictions of the numerical simulations effectively conformed to the surveillance video and investigation of the actual accident. UAV photogrammetry was demonstrated to be more efficient in accident data collection than hand sketch and measurement, and 3D laser scanning enabled an easier and more accurate modeling process of vehicle. The present study shows the feasibility of this method for use in traffic accident reconstruction. |
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| Keywords: | Traffic accident Geomatics techniques Multibody simulation FE simulation Crash reconstruction |
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