Cover Image

Sensitivity of Natural Frequencies to Composite Effects in Reinforced Concrete Elements

This article attempts to explain the effect of composite action in reinforced concrete (RC) elements on the natural frequencies. Natural frequencies are governed by the relationship between the physical properties of RC elements and its composite action. The softening of concrete in tension, compres...

Full description

Saved in:
Bibliographic Details
Main Authors: Razak, H.A., Fayyadh, M.M.
Format: Article
Language:English
Published: 2013
Subjects:
TA Engineering (General). Civil engineering (General)
Online Access:http://eprints.um.edu.my/9088/1/Sensitivity_of_Natural_Frequencies_to_Composite_Effects.pdf
http://eprints.um.edu.my/9088/
http://www.scopus.com/inward/record.url?eid=2-s2.0-84876117624&partnerID=40&md5=ddea52e91702766c22e094896d61d3a9 www.tandfonline.com/doi/abs/10.1080/15376494.2011.627636 http://www.tandfonline.com/doi/pdf/10.1080/15376494.2011.627636
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.um.eprints.9088
record_format eprints
spelling my.um.eprints.90882014-10-29T01:07:40Z http://eprints.um.edu.my/9088/ Sensitivity of Natural Frequencies to Composite Effects in Reinforced Concrete Elements Razak, H.A. Fayyadh, M.M. TA Engineering (General). Civil engineering (General) This article attempts to explain the effect of composite action in reinforced concrete (RC) elements on the natural frequencies. Natural frequencies are governed by the relationship between the physical properties of RC elements and its composite action. The softening of concrete in tension, compression, and pre- and post-yielding steel behavior are considered. The bonding action between steel and concrete under loading and unloading conditions is also taken into account. The assumption of the increase in stiffness of RC elements in tension due to bond action is investigated by tests on two RC beams. Both static and modal testing were carried out after inducing different levels of damage in the beams. Results show the validity of the assumption made due to composite action. Mode 1 can be an indicator for bond action behavior and for predicting the yield state of steel in the RC beams. Mode 2 behavior is governed by the amount of steel reinforcement, where for maximum steel ratio it will be affected by concrete softening, while for minimum steel ratio it will be affected by both concrete softening and bond action. Modes 3 and higher can be indicators for concrete softening. © 2013 Copyright Taylor and Francis Group, LLC. 2013 Article PeerReviewed application/pdf en http://eprints.um.edu.my/9088/1/Sensitivity_of_Natural_Frequencies_to_Composite_Effects.pdf Razak, H.A. and Fayyadh, M.M. (2013) Sensitivity of Natural Frequencies to Composite Effects in Reinforced Concrete Elements. Mechanics of Advanced Materials and Structures, 20 (6). pp. 441-453. ISSN 1537-6494 http://www.scopus.com/inward/record.url?eid=2-s2.0-84876117624&partnerID=40&md5=ddea52e91702766c22e094896d61d3a9 www.tandfonline.com/doi/abs/10.1080/15376494.2011.627636 http://www.tandfonline.com/doi/pdf/10.1080/15376494.2011.627636 Doi 10.1080/15376494.2011.627636
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
language English
topic TA Engineering (General). Civil engineering (General)
spellingShingle TA Engineering (General). Civil engineering (General)
Razak, H.A.
Fayyadh, M.M.
Sensitivity of Natural Frequencies to Composite Effects in Reinforced Concrete Elements
description This article attempts to explain the effect of composite action in reinforced concrete (RC) elements on the natural frequencies. Natural frequencies are governed by the relationship between the physical properties of RC elements and its composite action. The softening of concrete in tension, compression, and pre- and post-yielding steel behavior are considered. The bonding action between steel and concrete under loading and unloading conditions is also taken into account. The assumption of the increase in stiffness of RC elements in tension due to bond action is investigated by tests on two RC beams. Both static and modal testing were carried out after inducing different levels of damage in the beams. Results show the validity of the assumption made due to composite action. Mode 1 can be an indicator for bond action behavior and for predicting the yield state of steel in the RC beams. Mode 2 behavior is governed by the amount of steel reinforcement, where for maximum steel ratio it will be affected by concrete softening, while for minimum steel ratio it will be affected by both concrete softening and bond action. Modes 3 and higher can be indicators for concrete softening. © 2013 Copyright Taylor and Francis Group, LLC.
format Article
author Razak, H.A.
Fayyadh, M.M.
author_facet Razak, H.A.
Fayyadh, M.M.
author_sort Razak, H.A.
title Sensitivity of Natural Frequencies to Composite Effects in Reinforced Concrete Elements
title_short Sensitivity of Natural Frequencies to Composite Effects in Reinforced Concrete Elements
title_full Sensitivity of Natural Frequencies to Composite Effects in Reinforced Concrete Elements
title_fullStr Sensitivity of Natural Frequencies to Composite Effects in Reinforced Concrete Elements
title_full_unstemmed Sensitivity of Natural Frequencies to Composite Effects in Reinforced Concrete Elements
title_sort sensitivity of natural frequencies to composite effects in reinforced concrete elements
publishDate 2013
url http://eprints.um.edu.my/9088/1/Sensitivity_of_Natural_Frequencies_to_Composite_Effects.pdf
http://eprints.um.edu.my/9088/
http://www.scopus.com/inward/record.url?eid=2-s2.0-84876117624&partnerID=40&md5=ddea52e91702766c22e094896d61d3a9 www.tandfonline.com/doi/abs/10.1080/15376494.2011.627636 http://www.tandfonline.com/doi/pdf/10.1080/15376494.2011.627636
_version_ 1643688466494521344
score 13.211869

Similar Items