The Experts below are selected from a list of 49497 Experts worldwide ranked by ideXlab platform
Honggun Park - One of the best experts on this subject based on the ideXlab platform.
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steel plate shear walls with various Infill plate designs
Journal of Structural Engineering-asce, 2009Co-Authors: Inrak Choi, Honggun ParkAbstract:An experimental study was performed to investigate the structural capacity of steel plate walls with various Infill plate designs. Five three-story steel plate shear walls with thin Infill plates were tested. The parameters for this test were the connection method between the boundary frame and the Infill plate (welded connection versus bolted connection), length of the welded connection (full connection versus partial connection), and opening in the Infill plate (solid wall versus coupled wall). Regardless of the Infill plate design, the steel plate wall specimens exhibited excellent strength, deformation capacity, and energy dissipation capacity, although the walls with bolt-connected Infill plates exhibited a slightly lower deformation capacity. This result indicates that for architectural reasons and enhancement of constructability, various Infill plate designs can be used in practice without a significant reduction in the structural capacity of the steel plate walls. The strength and energy dissipation capacity of the steel plate wall specimens with various Infill plate designs were predicted by proposed methods. The prediction results were compared with the test results.
Inrak Choi - One of the best experts on this subject based on the ideXlab platform.
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steel plate shear walls with various Infill plate designs
Journal of Structural Engineering-asce, 2009Co-Authors: Inrak Choi, Honggun ParkAbstract:An experimental study was performed to investigate the structural capacity of steel plate walls with various Infill plate designs. Five three-story steel plate shear walls with thin Infill plates were tested. The parameters for this test were the connection method between the boundary frame and the Infill plate (welded connection versus bolted connection), length of the welded connection (full connection versus partial connection), and opening in the Infill plate (solid wall versus coupled wall). Regardless of the Infill plate design, the steel plate wall specimens exhibited excellent strength, deformation capacity, and energy dissipation capacity, although the walls with bolt-connected Infill plates exhibited a slightly lower deformation capacity. This result indicates that for architectural reasons and enhancement of constructability, various Infill plate designs can be used in practice without a significant reduction in the structural capacity of the steel plate walls. The strength and energy dissipation capacity of the steel plate wall specimens with various Infill plate designs were predicted by proposed methods. The prediction results were compared with the test results.
F. Colangelo - One of the best experts on this subject based on the ideXlab platform.
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Pseudo-dynamic seismic response of reinforced concrete frames Infilled with non-structural brick masonry
Earthquake Engineering and Structural Dynamics, 2005Co-Authors: F. ColangeloAbstract:This paper presents pseudo-dynamic test results on the in-plane seismic behaviour of Infilled frames. Thirteen single-storey, single-bay, half-size-scale, reinforced concrete-frame specimens, most of which Infilled with non-structural masonry made of perforated bricks and cement mortar are tested. The Infills are in contact with frames, without any connector; openings are not covered. The frames are different in their strength and details, reinforcement grade, and aspect ratio. Seismic input is the 1976 Tolmezzo (Friuli, Italy) ground acceleration, to which specimens are subjected two times: virgin and damaged by the previous test. The global seismic response of initially virgin Infilled specimens considerably differs from that of bare specimens. This follows a dramatic change of properties: compared to a bare frame, the initial stiffness increases by one order of magnitude, and the peak strength more than doubles. The peak drift lessens; however, the displacement ductility demand does not. The energy demand is greater. Nevertheless, the influence of Infill decreases as damage proceeds. Displacement time histories of damaged specimens are quite similar. At the local level, Infill causes asymmetry and concentration of the frame deformation. Copyright © 2005 John Wiley & Sons, Ltd.
Gaetano Manfredi - One of the best experts on this subject based on the ideXlab platform.
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influence of Infill distribution and design typology on seismic performance of low and mid rise rc buildings
Bulletin of Earthquake Engineering, 2013Co-Authors: Paolo Ricci, Maria Teresa De Risi, Gerardo M Verderame, Gaetano ManfrediAbstract:A growing attention has been addressed to the influence of Infills on the seismic behavior of Reinforced Concrete buildings, also supported by the observation of damage to Infilled RC buildings after severe earthquakes (e.g. L’Aquila 2009, Lorca 2011). In this paper, a numerical investigation on the influence of Infills on the seismic behavior of four different case study buildings is carried out: four- and eight-storey buildings, designed for seismic loads according to the current Italian technical code or for gravity loads only according to an obsolete technical code, are considered. Seismic capacity at two Limit States (Damage Limitation and Near Collapse) is assessed through static push-over analyses, within the N2 spectral assessment framework. Different Infill configurations are considered (Bare, Uniformly Infilled, Pilotis), and a sensitivity analysis is carried out, thus evaluating the influence of main material and capacity parameters on seismic response, depending on the number of storeys and the design typology. Fragility curves are obtained, through the application of a Response Surface Method. Seismic performance is also expressed in terms of failure probability, given a reference time period.
Bhesh Bhandari - One of the best experts on this subject based on the ideXlab platform.
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textural modification of 3d printed dark chocolate by varying internal Infill structure
Food Research International, 2019Co-Authors: Sylvester Mantihal, Sangeeta Prakash, Bhesh BhandariAbstract:This study aimed to create an intricate internal structure of 3D printed chocolate by varying the Infill construction. Three intricate Infill patterns designed were star, Hilbert curve and honeycomb with Infill percentage of 5%, 30%, 60% and 100%. Cadbury dark chocolate (Choc-1) and Callebaut bittersweet dark chocolate (Choc-2) powders were used by incorporating magnesium stearate (Mg-ST) and plant sterol (PS) powders as food additives. Printing parameters were set up with an extrusion temperature of 32 °C, nozzle size of 0.78 mm and printing speed of 70 mm/s. The results showed that voids in printed samples of all three pattern with 5% Infill density ranged from 60.8 ± 2.1% to 72.2 ± 1.8%. Voids in samples with 30% Infill density ranged from 20.9 ± 2.1% to 49.2 ± 3.6% while with 60% Infill density it ranged from 11.6 ± 2.3% to 19.4 ± 4.2%. Additionally, star and honeycomb Infill pattern produced the most stable and tough structure at 60% Infill as indicated by a higher normal force (N) to break the printed sample. Moreover, even at 100% Infill percentage, 3D printed chocolate were found less hard (ranged from 82.2 ± 2.2 N to 92.2 ± 1.3 N) as compared to cast samples (>110 N) in the snap test. The results obtained in this study provide a useful insight in creating various internal structures of 3D printed dark chocolate with different textural characteristic and physical stability.
