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Proceedings Paper

Variation of modal properties induced by combined effects of temperature and boundary condition
Author(s): Shanglian Zhou; Wei Song
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Paper Abstract

Changes in environmental conditions (such as temperature and humidity) and boundary conditions have been observed to have significant impact on structure's dynamic properties [1-6]. In general, environmental factors affect structures in a complicated manner such that it may result in support movement to strengthen or weaken the constraints [6]. Such changes of boundary conditions also can lead to significant variation of structure’s modal properties. However, few studies have considered the existence of both temperature and boundary condition as the combined contributing factors in changing structure’s dynamic properties.

This paper proposes a numerical study to analyze structure’s dynamic properties under combined influence of temperature and boundary condition. A beam finite element model that can consider the changes in both temperature and boundary condition is established. Numerical study is conducted to reveal the relationship between the variation of the beam’s dynamic properties and the changes of its boundary condition as well as ambient temperature. The obtained conclusion will provide insights of the influence of these two factors on future dynamic based structural health monitoring studies.

Paper Details

Date Published: 3 April 2015
PDF: 12 pages
Proc. SPIE 9435, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2015, 94352L (3 April 2015); doi: 10.1117/12.2084135
Show Author Affiliations
Shanglian Zhou, The Univ. of Alabama (United States)
Wei Song, The Univ. of Alabama (United States)

Published in SPIE Proceedings Vol. 9435:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2015
Jerome P. Lynch, Editor(s)

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