Analyses of distributed absorbed power responses of the human hand-arm system in the bent- and extended-arm postures

Authors

  • Surajudeen Adewusi CONCAVE Research Center, Concordia University, Montréal, QC H3G 1M8, Canada
  • Subhash Rakheja CONCAVE Research Center, Concordia University, Montréal, QC H3G 1M8, Canada
  • Pierre Marcotte Institut de Recherche Robert-Sauve en Sante et en Securite du Travail (IRSST), 505 de Maisonneuve West, Montréal, QC H3A 3C2, Canada

Keywords:

Biomechanics, Absorbed power, Arm posture, Biomechanical model, Driving point impedances, Energy distributions, Hand-arm system, Random excitations, Total power

Abstract

Biomechanical models of the hand-arm system in the bent- and extended-arm postures subject to zh-axis vibration were applied to derive the energy distribution within different substructures of the hand-arm system. The parameters of the models were derived on the basis of both the driving-point impedance and vibration transmitted to different segments of the hand-arm measured, using six subjects under broadband random excitation. The distributed and total power responses of the hand-arm system models under random excitations for both the postures were described. Significant effect of excitation and posture on the absorbed power is observed. Despite similarities in trends shown by segmental absorbed power, the values of absorbed power in the extended arm posture are significantly greater than those in the bent-arm posture for the same overall frequency-weighted vibration.

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Published

2011-06-01

How to Cite

1.
Adewusi S, Rakheja S, Marcotte P. Analyses of distributed absorbed power responses of the human hand-arm system in the bent- and extended-arm postures. Canadian Acoustics [Internet]. 2011 Jun. 1 [cited 2021 Dec. 8];39(2):50-1. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2352

Issue

Section

Proceedings of the Acoustics Week in Canada

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