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Proceedings Paper

Effects of human postures on energy dissipation from vibrating floors
Author(s): James M. W. Brownjohn; Xiahua Zheng
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Paper Abstract

When subjected to vertical vibration, a human behaves as a mass-spring-damper system rather than solely as a mass on the structure. The interaction between the human body and the structure results in a significant increase in the damping of the human-structure system. In published research, the human body has been modeled as a multi-degree of freedom system. Various experimental methods have been used to identify the relevant human model dynamic parameters such a the stiffness and damping. However there is lack of information on quantifying the damping effects of human- structure system. The study reported here prosed application of energy dissipation to evaluate the damping effects. During vibration, the human absorbs energy and also includes damping in the structure. It has been found that human postures like sitting, standing affect energy dissipation. Results from laboratory studies using a human on a vibrating concrete slab instrumented to record force and velocity at the vibration power source and the human/structure interface are presented.

Paper Details

Date Published: 13 June 2001
PDF: 5 pages
Proc. SPIE 4317, Second International Conference on Experimental Mechanics, (13 June 2001); doi: 10.1117/12.429625
Show Author Affiliations
James M. W. Brownjohn, Nanyang Technological Univ. (Singapore)
Xiahua Zheng, Nanyang Technological Univ. (Singapore)

Published in SPIE Proceedings Vol. 4317:
Second International Conference on Experimental Mechanics
Fook Siong Chau; Chenggen Quan, Editor(s)

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