Yazar "Bekdaş, Gebrail" için listeleme
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Buckling analysis and stacking sequence optimization of symmetric laminated composite plates
Çakıroğlu, Celal; Bekdaş, Gebrail (Springer Science and Business Media Deutschland GmbH, 2021)Symmetric laminated composite plates are frequently used in structural design due to their high strength to weight ratio. The stacking sequence of these laminates is known to have a major impact on the performance of these ... -
CO2 emission and cost optimization of concrete-filled steel tubular (CFST) columns using metaheuristic algorithms
Çakıroğlu, Celal; Billah, Muntasir; İslam, Kamrul; Bekdaş, Gebrail (MDPI, 2021)Concrete-filled steel tubular columns have garnered wide interest among researchers due to their favorable structural characteristics. To attain the best possible performance from concrete-filled steel tubular columns while ... -
The effect of SSI and impulsive motions on optimum active controlled MDOF structure
Ulusoy, Serdar; Niğdeli, Sinan Melih; Bekdaş, Gebrail (Springer Science and Business Media Deutschland GmbH, 2021)In this study, active controlled ten-story structures including soil-structure interaction (SSI) are investigated under different type of ground motions (near-fault and far ground motions) defined in FEMA P-695 to show the ... -
Explainable ensemble learning models for the rheological properties of self-compacting concrete
Çakıroğlu, Celal; Bekdaş, Gebrail; Kim, Sanghun; Geem, Zong Woo (MDPI-Multidisciplinary Digital Publishing Institute, 2022)Self-compacting concrete (SCC) has been developed as a type of concrete capable of filling narrow gaps in highly reinforced areas of a mold without internal or external vibration. Bleeding and segregation in SCC can be ... -
Harmony search optimisation of dispersed laminated composite plates
Çakıroğlu, Celal; Bekdaş, Gebrail; Geem, Zong Woo (Mdpi, 2020)One of the major goals in the process of designing structural components is to achieve the highest possible buckling load of the structural component while keeping the cost and weight at a minimum. This paper illustrates ... -
Interpretable machine learning algorithms to predict the axial capacity of frp-reinforced concrete columns
Çakıroğlu, Celal; Islam, Kamrul; Bekdaş, Gebrail; Kim, Sanghun; Geem, Zong Woo (MDPI-Multidisciplinary Digital Publishing Institute, 2022)Fiber-reinforced polymer (FRP) rebars are increasingly being used as an alternative to steel rebars in reinforced concrete (RC) members due to their excellent corrosion resistance capability and enhanced mechanical properties. ... -
Metaheuristic algorithms in optimum design of reinforced concrete beam by investigating strength of concrete
The locations of structural members can be provided according to architectural pro-jects in the design of reinforced concrete (RC) structures. the design of dimensions isthe subject of civil engineering, and these designs ... -
Metaheuristic optimization of laminated composite plates with Cut-Outs
Çakıroğlu, Celal; Islam, Kamrul; Bekdaş, Gebrail; Kim, Sanghun; Geem, Zong Woo (MDPI-Multidisciplinary Digital Publishing Institute, 2021)The stacking sequence optimization of laminated composite plates while maximizing the structural performance or minimizing the weight is a subject investigated extensively in the literature. Meanwhile, research on the ... -
Novel metaheuristic-based tuning of PID controllers for seismic structures and verification of robustness
Ulusoy, Serdar; Niğdeli, Sinan Melih; Bekdaş, Gebrail (Elsevier Ltd, 2021)In the present study, an active structural control using metaheuristic tuned Proportional-Integral-Derivative (PID) type controllers is presented. The aim of the study is to propose a feasible active control application ... -
Optimal dimensioning of retaining walls using explainable ensemble learning algorithms
Bekdaş, Gebrail; Çakıroğlu, Celal; Kim, Sanghun; Geem, Zong Woo (MDPI-Multidisciplinary Digital Publishing Institute, 2022)This paper develops predictive models for optimal dimensions that minimize the construction cost associated with reinforced concrete retaining walls. Random Forest, Extreme Gradient Boosting (XGBoost), Categorical Gradient ... -
Optimisation of shear and lateral-torsional buckling of steel plate girders using meta-heuristic algorithms
Çakıroğlu, Celal; Bekdaş, Gebrail; Kim, Sanghun; Geem, Zong Woo (Mdpi, 2020)The shear buckling of web plates and lateral-torsional buckling are among the major failure modes of plate girders. The importance of the lateral-torsional buckling capacity of plate girders was further evidenced when ... -
Optimization and predictive modeling of reinforced concrete circular columns
Bekdaş, Gebrail; Çakıroğlu, Celal; Kim, Sanghun; Geem, Zong Woo (MDPI-Multidisciplinary Digital Publishing Institute, 2022)Metaheuristic optimization techniques are widely applied in the optimal design of structural members. This paper presents the application of the harmony search algorithm to the optimal dimensioning of reinforced concrete ... -
Optimum active controlled SDOF structures under pulse-type ground motions via harmony search
Ulusoy, Serdar; Niğdeli, Sinan Melih; Bekdaş, Gebrail (Springer Science and Business Media Deutschland GmbH, 2021)In this study, the active controlled single degree of freedom (SDOF) structures with 0.5, 1.0 and 2.0 s period are investigated under various pulse-type ground motions (1.5, 2.0, and 2.5 s) to optimally tune the parameters ... -
Optimum design of cylindrical walls using ensemble learning methods
Bekdaş, Gebrail; Çakıroğlu, Celal; Islam, Kamrul; Kim, Sanghun; Geem, Zong Woo (MDPI-Multidisciplinary Digital Publishing Institute, 2022)The optimum cost of the structure design is one of the major goals of structural engineers. The availability of large datasets with preoptimized structural configurations can facilitate the process of optimum design ... -
Performance of optimum tuned PID controller with different feedback strategies on active-controlled structures
Ulusoy, Serdar; Bekdaş, Gebrail; Niğdeli, Sinan Melih; Kim, Sanghun; Geem, Zong Woo (MDPI-Multidisciplinary Digital Publishing Institute, 2021)In this study, multi-story structures with different combinations (on each floor and only the first floor) of active tendon control systems driven by a proportional-integral-derivative (PID) controller were actively ... -
Predictive modeling of recycled aggregate concrete beam shear strength using explainable ensemble learning methods
Çakıroğlu, Celal; Bekdaş, Gebrail (2023)Construction and demolition waste (CDW) together with the pollution caused by the production of new concrete are increasingly becoming a burden on the environment. An appealing strategy from both an ecological and a ... -
A review on the mechanical properties of natural fiber-reinforced composites
Çakıroğlu, Celal; Bekdaş, Gebrail (Springer Science and Business Media Deutschland GmbH, 2021)Natural fibers have drawn attention from the researchers and engineers in recent years due to their mechanical properties comparable to the conventional synthetic fibers and due to their low cost, eco-friendliness, and ...
