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Proceedings Paper

Modeling and simulation of human-floor system under vertical vibration
Author(s): Xiahua Zheng; James M. W. Brownjohn
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Paper Abstract

With the trend towards longer span and thus lower frequency floors, human induced vibration and human-structure interaction has received more and more concern about structural serviceability. 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 order to study human-structure interaction, mathematical model for this system is established. The human body and the slab are simulated as a SDOF model respectively. Through laboratory experiment with 30 human samples, the parameters of the SDOF human model were obtained. The result shows that the human resonant frequency is 5.24 +/- 0.40Hz, and damping ratio is 39%+/- -0.05. By combining experimental data and simulation, the human body's damping effect on vibrating floor was quantified in terms of energy absorption. During vibration, human absorbed most of the input energy.

Paper Details

Date Published: 16 August 2001
PDF: 8 pages
Proc. SPIE 4327, Smart Structures and Materials 2001: Smart Structures and Integrated Systems, (16 August 2001); doi: 10.1117/12.436586
Show Author Affiliations
Xiahua Zheng, Nanyang Technological Univ. (Singapore)
James M. W. Brownjohn, Nanyang Technological Univ. (Singapore)

Published in SPIE Proceedings Vol. 4327:
Smart Structures and Materials 2001: Smart Structures and Integrated Systems
L. Porter Davis, Editor(s)

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