Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/20710
Title: Nonlinear seismic torsional pounding between an asymmetric tower and a barrier
Authors: Wei, XX
Wang, LX
Chau, KT 
Issue Date: 2009
Publisher: Earthquake Engineering Research Institute
Source: Earthquake spectra, 2009, v. 25, no. 4, p. 899-925 How to cite?
Journal: Earthquake spectra 
Abstract: Seismic torsional pounding between an asymmetric single-story tower and a neighboring barrier under harmonic ground excitation is modeled as the nonlinear Hertz contact in this paper. The governing equations of motion are numerically solved using the fourth-order Runge-Kutta method with an adaptive step size control. An analytical solution is obtained for the first time for a special case of periodic torsional pounding. Results of our numerical simulations reveal that torsional pounding tends to be much more complex and unpredictable than translational pounding, and most of them are either multiple or chaotic impacts. The maximum torsional impact velocity tends to be insensitive to the changes of separation distance and eccentricity as long as impact is developed. Although the analytical solution fails to predict the exact impact velocity of multiple torsional pounding, it does provide some useful insights into this complex phenomenon. The analytical solution succeeds in predicting the overall patterns as well as the abrupt jump of torsional impact velocity spectra.
URI: http://hdl.handle.net/10397/20710
ISSN: 8755-2930
DOI: 10.1193/1.3207177
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

4
Last Week
0
Last month
0
Citations as of Nov 10, 2017

WEB OF SCIENCETM
Citations

3
Last Week
0
Last month
0
Citations as of Nov 16, 2017

Page view(s)

34
Last Week
1
Last month
Checked on Nov 13, 2017

Google ScholarTM

Check

Altmetric



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