Citation

Balandin DV, Bolotnik NN, Pilkey WD, Purtsezov SV, Shaw CG. Med. Eng. Phys. 2007; 30(2): 258-267.

Affiliation

Nizhny Novgorod State University, Department of Computational Mathematics and Cybernetics, 23 Gagarin Avenue, Nizhny Novgorod 603950, Russia.

Copyright

(Copyright © 2007, Institute of Physics and Engineering in Medicine, Publisher Elsevier Publishing)

DOI

10.1016/j.medengphy.2007.03.004

PMID

17498997

Abstract

To improve the protection of a wheelchair-seated person with disabilities traveling in a vehicle from injuries in a crash, it is proposed to attach the wheelchair to a movable platform separated from the vehicle body by means of a shock isolator. The control of the platform is designed to reduce the occupant's injury risk, as compared with the case of the attachment of the wheelchair directly to the vehicle. The isolator design is based on the minimization of the force transmitted to the wheelchair occupant, provided that the space allowed for the platform to move relative to the vehicle is constrained. The possibility of pre-acting control, when the isolator is engaged for a time prior to the crash, is discussed. Passive tiedown and restraint systems are studied, although it is recognized that active systems could provide even lower injury risks. A multibody model of the platform-based occupied wheelchair is utilized for full-scale simulation of the response of the system to a crash pulse. The simulation shows a noticeable reduction in the injury risk due to the platform and an even greater reduction of injury with pre-acting control.

Language: en