Effect of incremental static damage on modal frequencies of reinforced concrete beams

Hanif, Muhammad Usman and Ibrahim, Zainah and Lim, Huan Xin and Hang, You Xian (2018) Effect of incremental static damage on modal frequencies of reinforced concrete beams. International Journal of Integrated Engineering, 10 (2). pp. 105-111. ISSN 2229-838X

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Official URL: https://publisher.uthm.edu.my/ojs/index.php/ijie/a...

Abstract

The modelling and the failure mechanisms of RC structures is a complex phenomenon because the constituent materials' strengths are combined to overcome their weaknesses. Therefore, the failure mechanisms have not been understood completely. Modelling concrete beams using plasticity approaches has gained a lot of attention because of its versatility. This research incorporates the plasticity model with continuum damage model to evaluate the modal frequency deterioration of the reinforced beams. These beams were incrementally damaged in flexure using finite element modelling. It was observed that the model represents the damage mechanism of RC beams quite reasonably. The dynamic response of the beams is also in line with the experimental results. Based on the dynamic response, it was observed that the modal frequencies are sensitive to damage at initial stages and there is not significant reduction in the natural frequencies at complete damage.

Item Type: Article
Uncontrolled Keywords: Constitutive relations; RC beams; concrete damaged plasticity; modal analysis
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 19 Aug 2019 02:21
Last Modified: 19 Aug 2019 02:21
URI: http://eprints.um.edu.my/id/eprint/21950

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