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http://dx.doi.org/10.5389/KSAE.2008.50.2.019

Effects of Distributed Load on the Dynamic Response of the Reinforced Concrete Slabs  

Oh, Kyung-Yoon (전남대학교 대학원, 정주건설(주))
Cho, Jin-Goo (전남대학교)
Choi, Soo-Myung (전남대학교 농업생명과학대학)
Hong, Chong-Hyun (탐라대학교 토목환경공학과)
Publication Information
Journal of The Korean Society of Agricultural Engineers / v.50, no.2, 2008 , pp. 19-26 More about this Journal
Abstract
This study has been carried out to investigate the dynamic characteristics of RC slabs. For this purpose, the 20-node solid element has been used to discretize the RC slabs into two parts of concrete and rebar. The material non-linearity considering elasto-visco plastic model and the smeared crack model have been adopted in the finite element formulation. The applied load can handle step load, load intensity of harmonic load, area of distributed load and frequency. The frequency of harmonic load has an significant effect on dynamic behaviour in terms of displacement. As the frequency is increased, the effect of load amplitude is more serious. Especially, if the frequency of harmonic load exceeds 30 Hz, it is noted that the displacement by harmonic load is greater than that by step load. In case of harmonic load, the damping effect shows no certain tendency with respect to frequency of load. In details, the damping is effective when the frequency of harmonic load is 2 Hz, but there is no consistent tendency according to damping ratio. The dynamic response when the frequency of harmonic load is 3 Hz shows same result for undamped case as well as for damped case with 5% damping ratio. It is also noted that we can get the largest deflection for damped case with 1% damping ratio. However, there is not any damping effect when the frequency of harmonic load is greater than 4 Hz.
Keywords
Dynamic analysis; 3D solid finite element; Harmonic load; Frequency; Smeared crack model;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Oh, Kyung Yoon, Jin Goo Cho, and Chong Hyun Hong, 2007, Effects of Material Characteristics on the Dynamic Response of the Reinforced Concrete Slabs, Journal of the Korean Society of Agricultural Engineers, 49(4) : 43-49. (in korea)   과학기술학회마을   DOI
2 Kupfer, H., K. H. Hilsdorf and H. Rush (1969), "Behaviour of concrete under biaxial stresses, Proc. Amer. Concrete Inst., Vol. 66(8), pp.656-666
3 Mondkar and Powell, G. H., 1977, Finite Element Analysis of Nonlinear Static and Dynamic Response, International Journal for Numerical Methods in Engineering, Vol. 11, pp.499-520   DOI   ScienceOn
4 Hinton, E and D. R. J. Owen(1984), Finite Element Software for Plates and Shells, Pineridge Press Ltd., Swansea, U.K
5 Oh, Kyung Yoon, Jin Goo Cho, and Chong Hyun Hong, 2007, Effects of Design on the Dynamic Response of Reinforced Concrete Slabs, Journal of the Korean Society of Agricultural Engineers, 49(6) : 3-10. (in korea)   과학기술학회마을   DOI   ScienceOn
6 Hong, Chong-Hyun, Jin-Hwan Park and Kwang- Sung Woo(2002), "p-version Finite Element Analysis of Composite Laminated Plates with Geometric and Material Nonlinearities", Journal of the Korean Society of Civil Engineers, Vol. 22 No. 2-A, pp.355-364. (in korea)
7 Cho, Jin Goo, Keun Soo Park, 2001, Effects of Partially Distributed Step Load on Dynamic Response of the Plane Circular Arches, Journal of the Korean Society of Agricultural Engineers, 43(4) : 89-96. (in korea)
8 Hinton, E, 1988, Numerical Method and Software for Dynamic Analysis of Plates and Shells, Pineridge Press, Swansea, U.K
9 Kankam, J. A. and H. J. Dagher(1995), "Nonlinear FE analysis of RC skewed slab bridges", J. Struct. Engrg., ASCE, Vol.121, pp.1338-1345   DOI   ScienceOn
10 Vecchio, F.J. and M. Tata, 1999, "Approximate analyses of reinforced concrete slabs", Structural Engineering and Mechanics, Vol.8, No.1, pp.1-18   DOI   ScienceOn
11 Spiliopoulos, K. V. and G. Ch. Lykidis, 2006, "An efficient three-dimensional solid finite element dynamic analysis of reinforced concrete structures", Earthquake Engineering and Structural Dynamics, Vol. 35 No. 2, pp.137-157   DOI   ScienceOn