The Experts below are selected from a list of 100329 Experts worldwide ranked by ideXlab platform
Azadeh Parvin - One of the best experts on this subject based on the ideXlab platform.
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ply angle effect on fiber composite wrapped reinforced concrete beam column connections under combined axial and Cyclic Loads
Composite Structures, 2008Co-Authors: Azadeh ParvinAbstract:Abstract This paper presents a numerical analysis to investigate the effect of ply angle on the improvement of shear capacity and ductility of beam–column connections strengthened with carbon fiber-reinforced polymer (CFRP) wraps under combined axial and Cyclic Loads. Three-dimensional nonlinear finite element models for the beam–column connections were developed and simulated with the Marc.Mentat™ 2001 finite element analysis (FEA) software. An experimental study on an FRP-wrapped beam–column connection, which was previously reported in the literature, was utilized to validate the accuracy of the proposed finite element models. The FEA study entailed profiling the behavior of three beam–column connections that were strengthened through the CFRP wrapping with various ply angle configurations. Analysis results indicated that four layers of wrapping placed successively at ±45° ply angles with respect to the horizontal axis is the most suitable upgrade scheme for improving shear capacity and ductility of beam–column connections under combined axial and Cyclic Loads.
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Ply angle effect on fiber composite wrapped reinforced concrete beam–column connections under combined axial and Cyclic Loads
Composite Structures, 2008Co-Authors: Azadeh ParvinAbstract:Abstract This paper presents a numerical analysis to investigate the effect of ply angle on the improvement of shear capacity and ductility of beam–column connections strengthened with carbon fiber-reinforced polymer (CFRP) wraps under combined axial and Cyclic Loads. Three-dimensional nonlinear finite element models for the beam–column connections were developed and simulated with the Marc.Mentat™ 2001 finite element analysis (FEA) software. An experimental study on an FRP-wrapped beam–column connection, which was previously reported in the literature, was utilized to validate the accuracy of the proposed finite element models. The FEA study entailed profiling the behavior of three beam–column connections that were strengthened through the CFRP wrapping with various ply angle configurations. Analysis results indicated that four layers of wrapping placed successively at ±45° ply angles with respect to the horizontal axis is the most suitable upgrade scheme for improving shear capacity and ductility of beam–column connections under combined axial and Cyclic Loads.
Konstantinos Daniel Tsavdaridis - One of the best experts on this subject based on the ideXlab platform.
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behavior of circular fiber reinforced polymer steel confined concrete columns subjected to reversed Cyclic Loads experimental studies and finite element analysis
Journal of Structural Engineering-asce, 2019Co-Authors: Yanlei Wang, Gaochuang Cai, Daniele Waldmann, Amir Si Larbi, Konstantinos Daniel TsavdaridisAbstract:AbstractThis paper studied experimentally the behavior of circular fiber-reinforced polymer (FRP)–steel-confined concrete columns subjected to reversed Cyclic Loads. The influence of main structura...
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Behavior of Circular Fiber-Reinforced Polymer–Steel-Confined Concrete Columns Subjected to Reversed Cyclic Loads: Experimental Studies and Finite-Element Analysis
'American Society of Civil Engineers (ASCE)', 2019Co-Authors: Wang Y, Cai G, Li Y, Waldmann D, Si Larbi A, Konstantinos Daniel TsavdaridisAbstract:This paper studied experimentally the behavior of circular fiber-reinforced polymer (FRP)–steel-confined concrete columns subjected to reversed Cyclic Loads. The influence of main structural factors on the Cyclic behavior of the columns is discussed. Test results showed the outstanding seismic performance of FRP–steel-confined RC and steel-reinforced concrete (SRC) columns. The lateral confinement effectiveness of glass fiber–reinforced polymer (GFRP) tubes and GFRP–steel tubes was verified and a simplified OpenSees-based finite-element method (FEM) model was developed to simulate the experimental results of the test columns. Based on the proposed FEM model, a parametric analysis was conducted to investigate the effects of main factors on the reversed Cyclic behavior of GFRP–steel-confined RC columns. Based on the test and numerical analyses, the study discussed the influence of variables such as the lateral confinement on the plastic hinge region (PHR) height and peak drift ratio of the columns under reversed Cyclic Loads. Results indicate that lateral confinement significantly affects the PHR height of circular confined RC columns. Based on the analyses of the data from this study and literature, a simple model was suggested to predict the peak drift ratio of confined RC columns
D C Pham - One of the best experts on this subject based on the ideXlab platform.
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rotating plasticity and nonshakedown collapse modes for elastic plastic bodies under Cyclic Loads
International Journal of Mechanical Sciences, 2016Co-Authors: Canh V Le, Trac D. Tran, D C PhamAbstract:Abstract Different plastic collapse modes may have different effects on the overall behaviour and load-bearing capacity of an elastic–plastic structure subjected to variable Loads, and they may even be determined by different material plastic constants (for general plastic hardening materials). Both lower bound static and upper bound reduced kinematic approaches have been implemented with appropriate finite element realizations and mathematical programming techniques to study the nonshakedown modes for elastic plastic bodies under Cyclic Loads. For sufficiently complex structure and loading program, it has been firstly demonstrated that an elastic–plastic body may fail by rotating plasticity collapse rather than the simpler alternating plasticity one among other possible modes. That and other results also lead to interesting problems for further studies.
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Rotating plasticity and nonshakedown collapse modes for elastic–plastic bodies under Cyclic Loads
International Journal of Mechanical Sciences, 2016Co-Authors: Canh V Le, Trac D. Tran, D C PhamAbstract:Abstract Different plastic collapse modes may have different effects on the overall behaviour and load-bearing capacity of an elastic–plastic structure subjected to variable Loads, and they may even be determined by different material plastic constants (for general plastic hardening materials). Both lower bound static and upper bound reduced kinematic approaches have been implemented with appropriate finite element realizations and mathematical programming techniques to study the nonshakedown modes for elastic plastic bodies under Cyclic Loads. For sufficiently complex structure and loading program, it has been firstly demonstrated that an elastic–plastic body may fail by rotating plasticity collapse rather than the simpler alternating plasticity one among other possible modes. That and other results also lead to interesting problems for further studies.
Deric J. Oehlers - One of the best experts on this subject based on the ideXlab platform.
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Residual Strength of Structural Components Subjected to Cyclic Loads
Journal of Structural Engineering-asce, 1992Co-Authors: Deric J. OehlersAbstract:Present methods of fatigue research tend to concentrate on predicting the endurance of the structural component when it is subjected to a combination of Cyclic Loads. This has led to methods of design that assume the strength of the component is independent of the applied Cyclic Loads and that are therefore of limited use in assessing the remaining performance of an existing structure. It is suggested that design is more concerned with predicting the strength of a structure after a period of Cyclic loading, which is the converse of present fatigue design techniques. A design procedure has therefore been proposed that places the emphasis on predicting the strength of a structural component after it has been subjected to Cyclic loading. In this new design procedure, the strength of a structure has been linked to the fatigue Loads so that this procedure can also be used in the analysis mode to estimate the residual strength and residual endurance of an existing structure.
Canh V Le - One of the best experts on this subject based on the ideXlab platform.
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rotating plasticity and nonshakedown collapse modes for elastic plastic bodies under Cyclic Loads
International Journal of Mechanical Sciences, 2016Co-Authors: Canh V Le, Trac D. Tran, D C PhamAbstract:Abstract Different plastic collapse modes may have different effects on the overall behaviour and load-bearing capacity of an elastic–plastic structure subjected to variable Loads, and they may even be determined by different material plastic constants (for general plastic hardening materials). Both lower bound static and upper bound reduced kinematic approaches have been implemented with appropriate finite element realizations and mathematical programming techniques to study the nonshakedown modes for elastic plastic bodies under Cyclic Loads. For sufficiently complex structure and loading program, it has been firstly demonstrated that an elastic–plastic body may fail by rotating plasticity collapse rather than the simpler alternating plasticity one among other possible modes. That and other results also lead to interesting problems for further studies.
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Rotating plasticity and nonshakedown collapse modes for elastic–plastic bodies under Cyclic Loads
International Journal of Mechanical Sciences, 2016Co-Authors: Canh V Le, Trac D. Tran, D C PhamAbstract:Abstract Different plastic collapse modes may have different effects on the overall behaviour and load-bearing capacity of an elastic–plastic structure subjected to variable Loads, and they may even be determined by different material plastic constants (for general plastic hardening materials). Both lower bound static and upper bound reduced kinematic approaches have been implemented with appropriate finite element realizations and mathematical programming techniques to study the nonshakedown modes for elastic plastic bodies under Cyclic Loads. For sufficiently complex structure and loading program, it has been firstly demonstrated that an elastic–plastic body may fail by rotating plasticity collapse rather than the simpler alternating plasticity one among other possible modes. That and other results also lead to interesting problems for further studies.
