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Parametric study on the behavior of thin-walled castellated beams subjected to static monotonic loading using finite-element analysis
This paper presented a numerical study to investigate the behavior of thin-walled castellated beams (TWCBs). It was taken into account both the geometric and the material nonlinearities. Moreover, a finite-element analysis (FEA) using the ABAQUS program was carried out to simulate the full behavior of TWCBs using 3D shell elements with all possible failure modes. The accuracy of the FEA study was verified by comparing its results with the experimental results in the previous studies. An important point to be noted was that three types of TWCBs were considered in the numerical modeling. These three types were the shear dominate beam (SDB1), the moment and the shear dominate beam (MSDB), and the moment dominate beam (MDB1). The influence of the shear span to the depth (a/d) ratio on the shear behavior of the considered types of TWCBs was studied. To study the possibility of the occurance of new failure modes of TWCBs in flexure, the interaction between the membrane force, whether the tension, the compression combined or the bending moment was examined. The results showed that by increasing the shear span to depth ratio, the load-carrying capacity of SDB1, MSDB, and MDB1 decreased by 15%, 36.84%, and 71% for 2a/d, 5a/d and 8a/d, respectively, when compared to beams that had a/d. Moreover, the results showed that applying the membrane tension or the compression force as a first step loading might affect the overall behavior of the TWCBs.
Parametric study on the behavior of thin-walled castellated beams subjected to static monotonic loading using finite-element analysis
This paper presented a numerical study to investigate the behavior of thin-walled castellated beams (TWCBs). It was taken into account both the geometric and the material nonlinearities. Moreover, a finite-element analysis (FEA) using the ABAQUS program was carried out to simulate the full behavior of TWCBs using 3D shell elements with all possible failure modes. The accuracy of the FEA study was verified by comparing its results with the experimental results in the previous studies. An important point to be noted was that three types of TWCBs were considered in the numerical modeling. These three types were the shear dominate beam (SDB1), the moment and the shear dominate beam (MSDB), and the moment dominate beam (MDB1). The influence of the shear span to the depth (a/d) ratio on the shear behavior of the considered types of TWCBs was studied. To study the possibility of the occurance of new failure modes of TWCBs in flexure, the interaction between the membrane force, whether the tension, the compression combined or the bending moment was examined. The results showed that by increasing the shear span to depth ratio, the load-carrying capacity of SDB1, MSDB, and MDB1 decreased by 15%, 36.84%, and 71% for 2a/d, 5a/d and 8a/d, respectively, when compared to beams that had a/d. Moreover, the results showed that applying the membrane tension or the compression force as a first step loading might affect the overall behavior of the TWCBs.
Parametric study on the behavior of thin-walled castellated beams subjected to static monotonic loading using finite-element analysis
Asian J Civ Eng
Rageh, Basem O. (Autor:in) / Elsamak, Galal (Autor:in) / Almaadawy, Ahmed H. (Autor:in) / Elmasry, Ahmed H. (Autor:in)
Asian Journal of Civil Engineering ; 24 ; 1041-1053
01.06.2023
13 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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