Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/43053
標題: A numerical approach to determining the transient response of nonrectangular bars subjected to transverse elastic impact
作者: Lin, Y.C.
林宜清
Lai, W.K.
Lin, K.L.
Project: Journal of the Acoustical Society of America
期刊/報告no:: Journal of the Acoustical Society of America, Volume 103, Issue 3, Page(s) 1468-1474.
摘要: 
The objectives of the studies presented in this paper are to propose an efficient numerical approach to determining the transient response of nonrectangular bars subjected to transverse elastic impact, It is shown that the response of nonrectangular bars, such as T-and I-beams, subjected to transverse impact is composed of frequencies corresponding to the cross-sectional modes of vibration of the nonrectangular bar. In this study, eigenvalue analyses of plane-strain finite-element models of T- and I-sections were performed first to solve for the cross-sectional mode shapes and the corresponding natural frequencies. Three-dimensional resonant analyses were used to verify the existence of the cross-sectional modes obtained from the eigenvalue analyses, Three-dimensional finite-element models were also used to determine the transient response of T-and I-beams subjected to transverse elastic point impact. Numerical results were verified by experimental studies on a 0.5-m-deep concrete T-beam and a 0.72-m-deep concrete I-beam. Good agreement was obtained between the numerical and experimental results. It is concluded that the proposed numerical models are valid and efficient for determining the transient response of nonrectangular bars subjected to transverse impact. (C) 1998 Acoustical Society of America. [S0001-4966(98)01503-3].
URI: http://hdl.handle.net/11455/43053
ISSN: 0001-4966
DOI: 10.1121/1.421284
Appears in Collections:土木工程學系所

Show full item record
 

Google ScholarTM

Check

Altmetric

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.