MODELLING THE RESPONSE OF ISOLATED SLAB SPECIMENS USING EXPLICIT QUASI-STATIC FINITE ELEMENT ANALYSIS
1 Department of Building, University of Uyo, Uyo, Akwa Ibom State
2 Department of Building, University of Uyo, Akwa Ibom State, Nigeria
* Corresponding author: nsikakulaeto@uniuyo.edu.ng
2 Department of Building, University of Uyo, Akwa Ibom State, Nigeria
* Corresponding author: nsikakulaeto@uniuyo.edu.ng
Abstract
Purpose: This paper assesses the analytic modelling of response of reinforced concrete isolated
slab specimens using an explicit quasi-static nonlinear solution rather than the conventional
implicit static nonlinear solution. The advantage of the former being its applicability to dynamic
problems such as those associated with abnormal loadings on structures.
Design/methodology/approach: Two isolated slab specimens (IA30d-32 and IA30a-25) which
have been experimentally tested to fail in flexure and punching shear respectively were adopted
for validation of the analytic model.
Findings: Load displacement responses for both implicit static and explicit quasi-static
solutions were found to be similar at a loading rate of about 10.575KNs-1. Kinetic energy of the
system remained zero throughout the duration of the explicit quasi-static simulation with "mean
strain rates" ranging between 10-8 s-1 to 10-6 s-1. Hence, the explicit quasi-static solution met the
quasi-static loading range specified in Model Code 2010. Results of the analytic assessment
were conservative, with 6.4% and 4.1% differences in flexural and punching shear strength
respectively and 14% difference in rotation at punching shear failure.
Research limitations/Implications: Assessment was limited to the flexural and punching shear
response of isolated flat slab specimens.
Originality/value: It was concluded that at low loading rates, explicit quasi-static analysis
could be used in combination with the static failure criterion for the determination of the global
response of flat slab structures.
Keywords
Explicit FE analysis; isolated reinforced concrete; flat slabs specimens
References
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How to Cite
Ulaeto, N. W., & Odesola, I. A. (2017). MODELLING THE RESPONSE OF ISOLATED SLAB SPECIMENS USING EXPLICIT QUASI-STATIC FINITE ELEMENT ANALYSIS. Journal of Contemporary Research in the Built Environment, 1(1), 1-10. https://doi.org/10.68128/jocrebe.2017.p4uxgs70
N. W. Ulaeto, and I. A. Odesola, "MODELLING THE RESPONSE OF ISOLATED SLAB SPECIMENS USING EXPLICIT QUASI-STATIC FINITE ELEMENT ANALYSIS," Journal of Contemporary Research in the Built Environment, vol. 1, no. 1, pp. 1-10, March 2017. doi: 10.68128/jocrebe.2017.p4uxgs70
