نتایج جستجو برای: shear layer stiffness

تعداد نتایج: 387363  

Lightweight steel framing is a method in housing and construction that have been widely used in lightweight steel construction. In this method, the structure is built by cold formed steel elements. They are cost-effective, light, and easy to assemble. However, the performance of lateral load resisting systems in cold-formed steel structures specially the behavior of cold-formed steel shear wall...

2011
Scott E. Stapleton Anthony M. Waas Brett A. Bednarcyk

Elements based on the exact stiffness matrix method contain an embedded analytical solution that can capture detailed local fields, enabling more efficient mesh independent finite element analysis. In the present study, this method was applied to adhesively bonded joints. The adherends were modeled as Euler-Bernoulli beams, and the adhesive layer was modeled as a bed of linear shear and normal ...

2016
Taner Yilmaz

Coupling shear wall has been highly considered in recent years. Due to architectural limitations, sometimes the architect is forced to use two spans separate from shear wall. The study results have shown that using coupling shear wall will have better results than single wall in structure behavior and the desired performance can be achieved by using thinner plates. Coupling steel shear wall has...

2008
V. Phung D. Lau

This paper presents a three-dimensional nonlinear degrading stiffness model capable of capturing stiffness degradation in bilateral directions for earthquake response analyses of reinforced concrete bridges. Stiffness degradations due to flexural and shear damage are considered. The model can trace the progress of damage from initial failure through gradual degradation of the member stiffness d...

2016
Wen-Xue Yuan Hai-Bin Liu Feng-Shan Gao Yan-Xia Wang Kai-Rong Qin

BACKGROUND Exercise has been found to either reduce or increase arterial stiffness. Land-based exercise modalities have been documented as effective physical therapies to decrease arterial stiffness. However, these land-based exercise modalities may not be suitable for overweight individuals, in terms of risks of joint injury. The purpose of this study was to determine the effects of 8-week swi...

2017
Chang Wu Zuanfeng Pan Kang-Su Kim Shaoping Meng

Engineered cementitious composites (ECC) possesses characteristics that make it suitable in the zones of high shear and ductility demand of structural elements; however, there is a lack of an adequate model to predict its shear stiffness. A theoretical model for the effective shear stiffness of reinforced ECC (RECC) columns is proposed on the basis of the truss-arch model, with the consideratio...

2013
Kevin S Heffernan Wesley K Lefferts Ari G Kasprowicz Brendan J Tarzia Dick H Thijssen Tom D Brutsaert

Exposure of the arterial wall to retrograde shear acutely leads to endothelial dysfunction and chronically contributes to a proatherogenic vascular phenotype. Arterial stiffness and increased pressure from wave reflections are known arbiters of blood flow in the systemic circulation and each related to atherosclerosis. Using distal external compression of the calf to increase upstream retrograd...

2009
Hiroyuki Noda Toshihiko Shimamoto

[1] Velocity step tests at a range of slip rates (0.0154–155.54 mm s ) are performed using natural fault gouge containing smectite, mica, and quartz collected from an outcrop of the Hanaore Fault, southwest Japan. Field and microscopic observations reveal that the shear deformation is localized to a few centimeters or thinner layer of black clayey fault gouge. This layer is formed by multiple s...

2003
B. DORAN

Bar frame modelling is a popular method in coupled shear wall systems in structural design. In this process, determining the stiffness of the tie beams is important. In this study, results obtained by finite-element analysis of R/C coupled shear wall systems having several geometries in elastic-plastic space are considered. Using SPSS (Ver.5.0) statistical package program, an equivalent tie bea...

Journal: :نشریه مهندسی عمران و نقشه برداری 0
سمیه نصیری دانشگاه تهران علی اصغر میرقاسمی دانشگاه تهران

distinct target of this paper is development of 'implicit discrete element method (dem)' in three dimensions for estimating the ultimate bearing capacity of shallow foundations on layered (non-homogeneous) soils consisting of sand overlying sand or clay overlying sand and vice versa with different shear resisting parameters. in this method, shear resisting parameters and density of ea...

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