A numerical study on seismic characteristics of knee-braced cold formed steel shear walls

Zeynalian, Mehran and Ronagh, H.R. (2011) A numerical study on seismic characteristics of knee-braced cold formed steel shear walls. Thin-Walled Structures, 49 12: 1517-1525. doi:10.1016/j.tws.2011.07.012


Author Zeynalian, Mehran
Ronagh, H.R.
Title A numerical study on seismic characteristics of knee-braced cold formed steel shear walls
Journal name Thin-Walled Structures   Check publisher's open access policy
ISSN 0263-8231
1879-3223
Publication date 2011-12
Sub-type Article (original research)
DOI 10.1016/j.tws.2011.07.012
Volume 49
Issue 12
Start page 1517
End page 1525
Total pages 9
Place of publication Oxford, United Kingdom
Publisher Pergamon
Collection year 2012
Language eng
Abstract Non-linear finite element analyses were carried out to evaluate and optimize the seismic characteristics of knee-braced cold formed steel shear walls using software ANSYS. Different structural characteristics including: material nonlinearity, geometric imperfection, residual stresses and perforations are taken into account. The numerical models were verified based on experimental tests. Agreement of the numerical simulations and the test results showed that finite element analysis can be used effectively to predict the ultimate capacity of knee-braced CFS shear panels. A total of 12 models with a various ranges of knee-elements' lengths were investigated. Of particular interests were the specimens' maximum lateral load capacity and deformation behavior in addition to a rational estimation of the seismic response modification factor. Preliminary conclusions presented in this paper, refer to the optimum seismic characteristics of knee-braced CFS shear walls and the corresponding dimensions and configuration.
Keyword Cold-formed steel
Knee-braces
Lateral performance
Response modification factor
Numerical analysis
Finite element model
Optimization
Residual stress
Initial imperfection
Performance
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
Official 2012 Collection
 
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