Cyclic Axial Response of Composite Wood-Cold-Formed Steel Stud: Experimental and Numerical Investigation

This paper presents an experimental program carried out to investigate the behavior up to failure of composite wood-cold-formed steel studs under monotonic and cyclic axial loading. The composite stud is made of a wood core incorporated inside a CFS C-channel. The main objective of the experiments i...

Full description

Saved in:
Bibliographic Details
Published in:International journal of steel structures 2022, 22(4), , pp.1126-1146
Main Authors: Meddah, Hiba, Bourahla, Nouredine, Bechtoula, Hakim, Aknouche, Hassan, Nour, Ali
Format: Article
Language:English
Subjects:
Axial loads
Civil Engineering
Cold working
Cold-formed steel
Columns (structural)
Compressive strength
Cyclic loads
Energy dissipation
Engineering
Failure modes
Hysteresis loops
Loading rate
Materials Science
Mathematical models
Numerical models
Solid Mechanics
Stiffness
Studs
Ultimate tensile strength
Wood composites
토목공학
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper presents an experimental program carried out to investigate the behavior up to failure of composite wood-cold-formed steel studs under monotonic and cyclic axial loading. The composite stud is made of a wood core incorporated inside a CFS C-channel. The main objective of the experiments is to quantify the ultimate strength, the energy dissipation capacity, and the failure mode of full-scale CFS-wood composite elements. For this purpose, eight fixed-ended columns of 2320 mm in length were tested. The composite CFS C-studs with wood core were subjected to compression and tension monotonic tests in addition to two cyclic tests with different loading rates. For comparison purposes, similar tests were conducted on bare CFS C-studs. The cyclic loading protocol was in accordance with FEMA 461 recommendations, with initial displacement obtained from the monotonic tests. The results revealed that a significant gain of more than 80% in the average ultimate compression strength is achieved by the CFS-wood composite studs, and more importantly, the composite action enhances significantly the energy dissipation capacity characterized by more stable hysteresis loops with less stiffness and strength degradation. Finally, a detailed FE model using advanced interface modeling techniques, capable of predicting the ultimate strengths and the modes of failure, is elaborated and validated against the experimental results. The numerical model will be used eventually in future research work to optimize and improve the composite action.
ISSN:1598-2351
2093-6311
DOI:10.1007/s13296-022-00624-z