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- Bluff body (2)
- Inter-storey drift (2)
- Seismic performance (2)
- Composite behaviour (1)
- Dynamic analysis (1)
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- Fluid structure interaction (1)
- Hollowcore slabs (1)
- Incremental dynamic analysis (1)
- Interfacial shear and peel stress (1)
- Nonlinear finite element analysis (1)
- PIV (1)
- POD (1)
- Residual drift (1)
- Shallow flow (1)
- Shallow wake (1)
- Shape memory alloy (1)
- Steel moment resisting frame (1)
- Steel moment resisting frames (1)
- Turbulence (1)
Articles 1 - 5 of 5
Full-Text Articles in Engineering
Effect Of Gap Flow On The Shallow Wake Of A Sharp-Edged Bluff Body – Turbulence Parameters, A.M Shinneeb, R. Balachandar
Effect Of Gap Flow On The Shallow Wake Of A Sharp-Edged Bluff Body – Turbulence Parameters, A.M Shinneeb, R. Balachandar
Civil and Environmental Engineering Publications
This experimental study was carried out to investigate the turbulent wake generated by a vertical sharp-edged flat plate suspended in a shallow channel flow with a gap near the bed. The objective of this study is to understand the effect of the gap flow on the turbulent wake by studying two different gap heights between the channel bed and the bottom edge of the bluff body. These two cases were compared to the no-gap case which is considered as a reference case. The maximum flow velocity was 0.45 m/s and the Reynolds number based on the water depthwas 45,000. Extensivemeasurements …
Mean Characteristics Of Fluid Structures In Shallow-Wake Flows, Ram Balachandar
Mean Characteristics Of Fluid Structures In Shallow-Wake Flows, Ram Balachandar
Civil and Environmental Engineering Publications
An enhanced picture of the formation of fluid structures including the effect of the free surface and the bed is captured via a numerical solution of flow past a bed mounted bluffbody. A numerical comparison for the fluid structures observed in a time-averaged field of the shallow-wake flow behind a bluffbody utilizing the rigid-lid assumption and volume of fluid method is carried out in this study to bring forth the shortcomings in previous studies. The transient three-dimensional governing Navier–Stokes equations are computationally solved using a finite volume technique with Detached Eddy Simulation as a turbu- lence model. A flat wave …
Seismic Performance Of Steel Moment Resisting Frames Utilizing Superelastic Shape Memory Alloys, Papia Sultana, Maged A. Youssef
Seismic Performance Of Steel Moment Resisting Frames Utilizing Superelastic Shape Memory Alloys, Papia Sultana, Maged A. Youssef
Civil and Environmental Engineering Publications
Steel structures dissipate the seismic energy through steel yielding, which results in residual deformations. Although conventional earthquake-resisting structural systems provide adequate seismic safety, they experience significant structural damage when exposed to strong ground shaking. Seismic residual drifts complicate the repair of damaged structures or render the structure as irreparable. Therefore, systems that can minimize the seismic residual deformations are needed. Superelastic shape memory alloys (SMAs) have the ability to undergo large deformations and recover all plastic deformations upon unloading. Their utilization in steel structures can significantly reduce seismic residual deformations, which will facilitate post-seismic retrofitting. Although the literature provides few …
Prediction Of Local Seismic Damage In Steel Moment Resisting Frames, Papia Sultana, Maged A. Youssef
Prediction Of Local Seismic Damage In Steel Moment Resisting Frames, Papia Sultana, Maged A. Youssef
Civil and Environmental Engineering Publications
Steel moment resisting frames (SMRFs) are widely utilized as a lateral load resisting system. Their seismic performance is usually assessed by examining the maximum value of inter-storey drift (MID) of all floors. The accuracy of such assessment is debatable given the wide spread of values of MID at collapse that exist in the literature. In this study, a simplified method to define the failure inter-storey drift for each floor of a SMRF is proposed. The method was validated with the experimental and analytical studies by other researchers. Three- and ten-storey SMRFs were considered to further validate the proposed method. The …
Finite Element Modeling Of The Composite Action Between Hollowcore Slabs And The Topping Concrete, Aiham Adawi, Maged Youssef, Mohamed E. Meshaly
Finite Element Modeling Of The Composite Action Between Hollowcore Slabs And The Topping Concrete, Aiham Adawi, Maged Youssef, Mohamed E. Meshaly
Civil and Environmental Engineering Publications
The ultimate strength of hollowcore slabs is greatly affected by their post-cracking behaviour. The composite action between the concrete topping and the hollowcore slab adds another level of nonlinearity. This paper presents a comprehensive finite element study to evaluate the nonlinear properties of the interface between a hollowcore slab and its concrete topping. The presented finite element modeling procedure was validated using data from a previous comprehensive experimental study by the authors. The nonlinear material behaviour of the concrete and the prestressing strands were also accounted for. The paper presents a modeling method that realistically simulates the staged construction technique …