Stress Distribution of Different Shapes of Opening in Shear Wall

2019 ◽  
Author(s):  
Shubham Subhash Chaudhary ◽  
S. R. Parekar
Keyword(s):  
Stress Distribution ◽  
Shear Wall ◽  
Different Shapes

Effects of openings on the seismic behavior and performance level of concrete shear walls

2019 ◽  
Author(s):  
Hossein Alimohammadi ◽  
Mostafa Dalvi Esfahani ◽  
Mohammadali Lotfollahi Yaghin
Keyword(s):  
Static Analysis ◽  
Cross Section ◽  
Seismic Behavior ◽  
Shear Walls ◽  
Shear Wall ◽  
Constant Cross Section ◽  
Added Resistance ◽  
Different Shapes ◽  
And Performance ◽  
Abaqus Software

In this study, the seismic behavior of the concrete shear wall considering the opening with different shapes and constant cross-section has been studied, and for this purpose, several shear walls are placed under the increasingly non-linear static analysis (Pushover). These case studies modeled in 3D Abaqus Software, and the results of the ductility coefficient, hardness, energy absorption, added resistance, the final shape, and the final resistance are compared to shear walls without opening.

Vertical Stress Distributions of a Thin Rectangular Steel Wall Under Compression and in-Plane Bending

2020 ◽  
Vol 20 (08) ◽  
pp. 2050090
Author(s):  
Yang Lv ◽  
Jia-Qi Lv ◽  
Zheng Zhao
Keyword(s):  
Shear Strength ◽  
Stress Distribution ◽  
Shear Wall ◽  
Vertical Stress ◽  
Thin Wall ◽  
Effective Width ◽  
Steel Shear Wall ◽  
Gravity Load ◽  
Plane Bending ◽  
Minimum Stress

A thin rectangular steel wall in a steel shear wall structure always simultaneously sustains the lateral load and the gravity load. The gravity load can affect the shear strength of a steel shear wall. However, this effect is not considered in most of the research and standards, which may lead to potential danger in practice. From the previous study of the authors, the shear strength reduction was not only influenced by the load magnitude but also by the vertical stress distribution. For a simply-supported thick square wall, i.e. width to thickness ratio smaller than 100, the stress distribution can be accurately described in a cosine form. However, for a thin wall under compression and in-plane bending, the cosine distribution will largely overestimate the vertical stress, especially when the walls enter the post-buckling condition. To narrow the knowledge gap, this paper proposed a vertical stress distribution in a three-segment form, i.e. in both edge-segments, a combination of linear and cosine functions from the edge stresses to the minimum stress, while in the middle segment, the stress distribution is constant and equal to the minimum stress. Two strategies, i.e. effective width method and Bedair’s method, are chosen to determine the width of the edge portion. A finite element model (FEM) is developed to evaluate the proposed distribution. The FEM has been verified using the results of our own experiments and tests done by Zaraś et al. The results show that the proposed three-segment stress distribution can well describe the behavior of thin walls of different slendernesses and stress gradients. The cosine distribution obtained from theoretical solution and the effective width model by Bedair are also discussed.

Stresses in an Ellipsoidal Rotor in a Centrifugal Force Field

1959 ◽  
Vol 26 (4) ◽  
pp. 549-552
Author(s):  
M. A. Goldberg ◽  
Michael Sadowsky
Keyword(s):  
Exact Solution ◽  
Stress Distribution ◽  
Force Field ◽  
Centrifugal Force ◽  
The Body ◽  
Centrifugal Force Field ◽  
Different Shapes

Abstract This paper contains an exact solution for the stress distribution in an elastic ellipsoid rotating about a free axis. The surface of the body is free from boundary stresses. The stresses are expressed with the use of 12 coefficients which have been tabulated for 209 ellipsoids of different shapes. General diagrams give the maximum values of stresses as functions of two shape ratios.

scholarly journals Effect of Shear wall Geometry on Ten Storey Building with Raft and Fixed base Foundation

2019 ◽  
Vol 9 (1) ◽  
pp. 205-208
Keyword(s):  
Shear Walls ◽  
Shear Wall ◽  
Soil Conditions ◽  
High Rise ◽  
Seismic Zones ◽  
Raft Foundation ◽  
Mat Foundation ◽  
Different Shapes ◽  
Wall Geometry ◽  
Storey Building

:Raft foundation is widely used for high-rise buildings where presence of shear wall is very common. Shear Wall resists a major portion of the lateral load of high-rise buildings. So, presence of shear wall on mat foundation causes significant change in pattern and intensity of loading on mat foundation. The present work involved an investigation of effect of shear wall geometry in different seismic zones with and without the presence of raft foundation. Multi storey building with ten storey is analysed for the storey drift, storey displacement and base shear. The analysis of building is done by response spectrum analysis. The different shapes of shear walls C,L,F,I with same plan area is considered. The effect of shear wall geometry is studied in zone II, zone III, zone IV, zone V. Loads and load combinations selected based on IS 456-2000 and IS 875-1987 code. Three types of soil conditions are considered typeI ,typeII, typeIII.Raft foundation is designed by meshing the slab into equal quadrilaterals.Assigning of area springs to the each quadrilateral.Meshing is done inorder to convert the infinite solution into finite solution.The different shapes of the shear walls is analysed in zone V with the raft foundation in type III.The results are compared with and without the raft foundation ,conclusions are drawn that the best shape of the shear wall suits in different seismic zones.

Stresses Around Reinforced Elliptical Holes, with Applications to Pressure Cabin Windows

1959 ◽  
Vol 10 (4) ◽  
pp. 373-400 ◽  
Author(s):  
W. H. Wittrick
Keyword(s):  
Stress Distribution ◽  
Analytical Solution ◽  
Arbitrary Constant ◽  
Elliptical Hole ◽  
Stress System ◽  
Complex Variable Methods ◽  
Wide Range ◽  
Plane Sheet ◽  
Elliptical Holes ◽  
Different Shapes

An analytical solution, using complex variable methods, is given for the problem of the stress distribution due to an elliptical hole, reinforced around its boundary, in a plane sheet subjected at infinity either to an arbitrary constant stress system or to a bending type stress system. Numerical results were obtained for a wide range of parameters, including three different shapes of ellipse, and ten different amounts of reinforcement. Poisson's ratio was assumed to be 1/3.

The Simulation of Thermal Stress Field for Polysilicon Crystal in Different Shapes of Crucible

2014 ◽  
Vol 926-930 ◽  
pp. 286-291
Author(s):  
Yu Feng Luo ◽  
Hua Wei Song ◽  
Fa Yun Zhang ◽  
Hua Xia Peng ◽  
Yun Hu ◽  
...  
Keyword(s):  
Thermal Stress ◽  
Stress Distribution ◽  
Stress Field ◽  
Production Process ◽  
Comsol Multiphysics ◽  
Inverted Cone ◽  
Thermal Stress Field ◽  
Different Types ◽  
Different Shapes ◽  
Thermal Stress Distribution

The thermal stress field in the polysilicon was simulated and comparatively analyzed at different shapes of crucibes which have different types of a flat, a inverted-conical and concave bottom by COMSOL Multiphysics version 4.3a. The results indicated that: within the flat-bottomed crucible ,the isotherm in the crystal was slightly convex and the area of the maximum thermal stress was distributed in the bottom of the crystal edge and near the top of crystal edge; within the inverted-cone crucible, the isotherm in the crystal was straight and the area of the maximum thermal stress was only distributed in the bottom of the crystal edge; within the bottom of the concave crucible, the isotherm in the crystal was slightly concave and the area of the maximum thermal stress distributed in the bottom of the crystal edge was larger than that of the crystal within the first two kinds of crucibles. To sum up, the inverted-cone crucibe was beneficial to reduce the thermal stress distribution in the polysilicon which could provide theoretical guidance for improving the production process of the polysilicon.

Nonlinear Static Pushover Analysis for Shear Wall Structures in SAP2000 Program

2013 ◽  
Vol 470 ◽  
pp. 1007-1010 ◽  
Author(s):  
Zhi Bin Su ◽  
Tao Han ◽  
Sheng Nan Sun
Keyword(s):  
Reinforced Concrete ◽  
Stress Distribution ◽  
Pushover Analysis ◽  
Shear Wall ◽  
Wall Structures ◽  
Concrete Layer ◽  
Load Pattern ◽  
Nonlinear Static ◽  
Static Pushover Analysis ◽  
Nonlinear Static Pushover Analysis

To study the nonlinear mechanical characteristics of reinforced concrete shear wall structures under rare earthquakes, a single reinforced concrete shear wall model is established in SAP2000 program, which is simulated by nonlinear multi-layer shell element. Nonlinear static pushover analysis of the model is presented by uniform acceleration lateral load pattern and inverted triangle lateral load pattern. The relationship curve between base shear and top displacement of shear wall, and the stress distribution diagrams of the concrete layer and rebar layer are obtained. It may be concluded that, the yielding of rebar layer and the cracking of the concrete layer may be observed by stress distribution diagrams. SAP2000 program is feasible to nonlinear simulation of shear wall structures.

Analysis on Bearing Wall with Opening Transfer Beams Subjected to Vertical Loads

2014 ◽  
Vol 578-579 ◽  
pp. 830-834
Author(s):  
Meng Zhou Lv ◽  
De Quan Liu ◽  
Xiao Yu Sun
Keyword(s):  
Finite Element ◽  
Stress Distribution ◽  
Shear Wall ◽  
Horizontal Stress ◽  
Wall Structure ◽  
Finite Element Analyses ◽  
Distribution Law ◽  
Opening Ratio

In shear wall structure with supporting frames, the whole structure' s bearing mechanism is greatly influenced by the opening of shear wall on transfer beam under vertical loads. In this paper, finite element analyses of bearing wall with different type of opening transfer beams subjected to vertical loads were carried out, the influences of opening on transfer beam and shear wall were studied, the stress distribution law and the position of the neutral axises of the transfer beams were presented. The analysis results showed that horizontal stress and the neutral axises of transfer beam change with opening ratio of wall.The points offered in the paper can be referred in shear wall structure with supporting frames design.

Investigation of influence of concrete material models on cyclic inelastic response of a concrete filled composite plate shear wall

2020 ◽  
Vol 6 (2) ◽  
pp. 91
Author(s):  
Erkan Polat
Keyword(s):  
Stress Distribution ◽  
Composite Plate ◽  
Axial Stress ◽  
Shear Wall ◽  
Material Models ◽  
Concrete Material ◽  
Model Average ◽  
Total Base ◽  
Axial Stress Distribution ◽  
Concrete Model

A previously benchmarked finite element model of a previously tested composite plate shear wall-concrete filled (C-PSW/CF) was used to investigate the influence of three concrete material models on in-plane cyclic inelastic wall response, using LS-Dyna. The concrete material models considered were the Winfrith, KCC and CSCM, all available in LS-Dyna. Wall moment hysteresis, using the three concrete material models, were obtained and compared. Individual contribution of the steel and concrete to total base moment was investigated for each wall with the three concrete material models. The numerical results obtained using the KCC and CSCM were compared against the benchmarked results obtained using the Winfrith concrete material model. Moment contribution of the steel web and the steel boundary on total base moment of the steel part of the wall and moment contribution of the concrete web and concrete boundary on total base moment of the concrete part of the wall were individually investigated. The wall models with the KCC and CSCM concrete models were observed to cannot capture wall pinching which was captured by the Winfrith concrete model. The wall strength was overpredicted by the CSCM concrete model and predicted reasonably by the KCC concrete model. Average axial stress distribution of the infill concrete was obtained to investigate wall neutral axis and the maximum attained concrete strength using the three concrete models. Concrete axial stress distribution showed some level of confinement for the concrete models considered.

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