A of freedom lumped parameter vibratory model of human body is developed, for vertical mode vibrations, using anthropometric data of the 50th percentile US male. The mass and stiffness of various segments are determined from the elastic modulii of bones and tissues and from the anthropometric data available, assuming the shape of all the segments is ellipsoidal. The damping ratio of each segment is estimated on the basis of the physical structure of the body in a particular posture. Damping constants of various segments are calculated from these damping ratios. The human body is modeled as a linear spring-mass-damper system. The optimal values of the damping ratios of the body segments are estimated, for the of freedom model of the 50th percentile US male, by comparing the response of the model with the experimental response. Formulating a similar vibratory model of the 50th percentile Indian male and comparing the frequency response of the model with the experimental response of the same group of subjects validate the modeling procedure. A range of damping ratios has been considered to develop a vibratory model, which can predict the vertical harmonic response of the human body.
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August 2007
Technical Papers
Identification and Experimental Validation of Damping Ratios of Different Human Body Segments Through Anthropometric Vibratory Model in Standing Posture
T. C. Gupta
T. C. Gupta
Department of Mechanical Engineering,
e-mail: tcgmnit@indiatimes.com
Malaviya National Institute of Technology
, Jaipur 302 017, India
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T. C. Gupta
Department of Mechanical Engineering,
Malaviya National Institute of Technology
, Jaipur 302 017, Indiae-mail: tcgmnit@indiatimes.com
J Biomech Eng. Aug 2007, 129(4): 566-574 (9 pages)
Published Online: December 12, 2006
Article history
Received:
June 30, 2005
Revised:
December 12, 2006
Citation
Gupta, T. C. (December 12, 2006). "Identification and Experimental Validation of Damping Ratios of Different Human Body Segments Through Anthropometric Vibratory Model in Standing Posture." ASME. J Biomech Eng. August 2007; 129(4): 566–574. https://doi.org/10.1115/1.2720917
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