Naslov
Numerical simulation of reinforced concrete structures under impact loading

Autori
Živaljić, Nikolina ; Nikolić, Željana ; Smoljanović, Hrvoje ; Munjiza, Ante

Izvornik
Materialwissenschaft und Werkstofftechnik (0933-5137) 50 (2019), 5; 599-610

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Crack pattern, Finite-discrete element method ; Impact loading ; Numerical simulation ; Reinforced concrete beam

Sažetak
This study presents the performance of a combined finite-discrete element method for prediction of the structural response of reinforced concrete beams under impact loading. A combination of finite and discrete element methods enables the modelling of the concrete and the reinforcement before the concrete cracking, as well as a discontinuous nature of the concrete caused by fracture and fragmentation under high impact loading. Discretisation of the concrete with triangular finite elements is coupled with one-dimensional reinforcing bars embedded inside the concrete finite elements. The cracking in the concrete activates the joint elements used to simulate the non-linear behaviour of both concrete and reinforcement. Numerical analysis based on experimental test data has been carried out to simulate the main features of the reinforced concrete beams impacted by free-falling drop-weights. A high level of accuracy was demonstrated in various comparisons between the experimental tests and the analysis results, including peak displacement, crack pattern, damage level and failure modes of reinforced concrete beams.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

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