A Quadrilateral Meshing Method for Shear-Wall Structures

2014 ◽  
Vol 638-640 ◽  
pp. 9-14
Author(s):  
Jin Duan ◽  
Xiao Ming Chen ◽  
Yun Gui Li
Keyword(s):  
Present Method ◽  
Decomposition Method ◽  
Mesh Size ◽  
Shear Wall ◽  
Building Structures ◽  
Element Analysis ◽  
Wall Structures ◽  
Geometry Decomposition ◽  
Meshing Scheme ◽  
Quadrilateral Meshing

In this paper, a meshing scheme for shear-wall structures is developed based on the paving method and associated with the mapping and geometry decomposition method. The present method would combine the advantages of free mesh, such as strong generality for complicated structures, and mapping mesh, such as outstanding efficiency for some specific geometries, and result in the following four merits: (1) theoretically suitable for arbitrary shear wall and slab; (2) the mesh is compatible, i.e., the adjacent boundary of the shear-wall and slab has identical nodes; (3) all or most of the elements are quadrilateral which is important for finite element analysis; (4) the mesh is uniform and homogeneous, and the transition between different mesh size would be automatically smoothed. Finally, some meshing examples for complicated building structures are presented to illustrate the validity of this meshing scheme.

Vibration Table Test and Research on Seismic Performance of Reinforced Concrete Eccentric Frame - Shear Wall Structures

2013 ◽  
Vol 671-674 ◽  
pp. 1514-1518
Author(s):  
Bing Li ◽  
He Ping Jiang ◽  
Wei Hao Wang
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
Shear Wall ◽  
Simulation Software ◽  
Test Model ◽  
Element Analysis ◽  
Performance Simulation ◽  
High Rise ◽  
Wall Structures ◽  
Improvement Measures

Reinforced concrete eccentric frame - shear wall structures has been widely used in Engineering, but this structure is mostly used for high-rise structure. Depending on experimental study will be unable to accurately draw the seismic reflection of structure, it needs to use the simulation software to study the seismic performance of high-rise structure. In this paper, by using ANSYS finite element analysis software to establish the numerical model which is based on the test model to carry out the seismic performance simulation. Then, through the improvement measures to get the measures for improved seismic performance.

Vibration Table Test and Computer Simulation Analysis of Reinforced Concrete Eccentric Frame - Shear Wall Structures

2013 ◽  
Vol 663 ◽  
pp. 31-36
Author(s):  
Bing Li ◽  
He Ping Jiang
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
Simulation Analysis ◽  
Shear Wall ◽  
Simulation Software ◽  
Test Model ◽  
Element Analysis ◽  
High Rise ◽  
Wall Structures ◽  
Improvement Measures

Reinforced concrete eccentric frame - shear wall structures has been widely used in Engineering, but this structure is mostly used for high-rise structure. Depending on experimental study will be unable to accurately draw the seismic reflection of structure, it needs to use the simulation software to study the seismic performance of high-rise structure. In this paper, by using ANSYS finite element analysis software to establish the numerical model which is based on the test model to carry out the seismic performance simulation. Then, through the improvement measures to get the measures for improved seismic performance.

Finite Element Analyses of JNES/NUPEC Seismic Shear Wall Cyclic and Shaking Table Test Data

2007 ◽  
Author(s):  
Jim Xu ◽  
Jinsuo Nie ◽  
Charles Hofmayer ◽  
Syed Ali
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Test Data ◽  
Shaking Table Test ◽  
Shear Wall ◽  
Shaking Table ◽  
Seismic Capacity ◽  
Element Analysis ◽  
Wall Structures ◽  
Rc Shear Wall

This paper describes a finite element analysis to predict the JNES/NUPEC cyclic and shaking table RC shear wall test data, as part of a collaborative agreement between the U.S. NRC and JNES to study seismic issues important to the safe operation of commercial nuclear power plant (NPP) structures, systems and components (SSC). The analyses described in this paper were performed using ANACAP reinforced concrete models. The paper describes the ANACAP analysis models and discusses the analysis comparisons with the test data. The ANACAP capability for modeling nonlinear cyclic characteristics of reinforced concrete shear wall structures was confirmed by the close comparisons between the ANACAP analysis results and the JNES/NUPEC cyclic test data. Reasonable agreement between the analysis results and the test data was demonstrated for the hysteresis loops and the shear force orbits, in terms of both the overall shape and the cycle-to-cycle comparisons. The ANACAP simulation analysis of the JNES/NUPEC shaking table test was also performed, which demonstrated that the ANACAP dynamic analysis with concrete material model is able to capture the progressive degrading behavior of the shear wall as indicated from the test data. The ANACAP analysis also predicted the incipient failure of the shear wall, reasonably close to the actual failure declared for the test specimen. In summary, the analyses of the JNES/NUPEC cyclic and shaking table RC shear wall tests presented in this paper have demonstrated the state-of-the-art analysis capability for determining the seismic capacity of RC shear wall structures.

scholarly journals Orbit Decomposition Method for Rotordynamic Coefficients Identification of Annular Seals

2021 ◽  
Vol 11 (9) ◽  
pp. 4237
Author(s):  
Mingjie Zhang ◽  
Jiangang Yang ◽  
Wanfu Zhang ◽  
Qianlei Gu
Keyword(s):  
Circular Orbit ◽  
Present Method ◽  
Decomposition Method ◽  
Parameter Analysis ◽  
Elliptical Orbit ◽  
Computational Time ◽  
Solution Technique ◽  
Rotordynamic Coefficients ◽  
Cfd Method ◽  
Annular Seals

The elliptical orbit whirl model is widely used to identify the frequency-dependent rotordynamic coefficients of annular seals. The existing solution technique of an elliptical orbit whirl model is the transient computational fluid dynamics (CFD) method. Its computational time is very long. For rapid computation, this paper proposes the orbit decomposition method. The elliptical whirl orbit is decomposed into the forward and backward circular whirl orbits. Under small perturbation circumstances, the fluid-induced forces of the elliptical orbit model can be obtained by the linear superposition of the fluid-induced forces arising from the two decomposed circular orbit models. Due to that the fluid-induced forces of circular orbit, the model can be calculated with the steady CFD method, and the transient computations can be replaced with steady ones when calculating the elliptical orbit whirl model. The computational time is significantly reduced. To validate the present method, its rotordynamic results are compared with those of the transient CFD method and experimental data. Comparisons show that the present method can accurately calculate the rotordynamic coefficients. Elliptical orbit parameter analysis reveals that the present method is valid when the whirl amplitude is less than 20% of seal clearance. The effect of ellipticity on rotordynamic coefficients can be ignored.

scholarly journals A novel method for the analytical solution of fractional Zakharov–Kuznetsov equations

2019 ◽  
Vol 2019 (1) ◽  
Author(s):  
Rasool Shah ◽  
Hassan Khan ◽  
Dumitru Baleanu ◽  
Poom Kumam ◽  
Muhammad Arif
Keyword(s):  
Present Method ◽  
Decomposition Method ◽  
Fractional Derivatives ◽  
Adomian Decomposition Method ◽  
Current Method ◽  
Analytical Technique ◽  
Suggested Technique ◽  
Adomian Decomposition ◽  
Novel Method ◽  
The Given

AbstractIn this article, an efficient analytical technique, called Laplace–Adomian decomposition method, is used to obtain the solution of fractional Zakharov– Kuznetsov equations. The fractional derivatives are described in terms of Caputo sense. The solution of the suggested technique is represented in a series form of Adomian components, which is convergent to the exact solution of the given problems. Furthermore, the results of the present method have shown close relations with the exact approaches of the investigated problems. Illustrative examples are discussed, showing the validity of the current method. The attractive and straightforward procedure of the present method suggests that this method can easily be extended for the solutions of other nonlinear fractional-order partial differential equations.

Finite Element Simulation of RC Shear Wall Components

2012 ◽  
Vol 170-173 ◽  
pp. 3594-3597
Author(s):  
Hai Tao Wan ◽  
Peng Li
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Shear Wall ◽  
Lateral Force ◽  
Skeleton Curve ◽  
Structure Damage ◽  
Wall Structures ◽  
Element Simulation ◽  
Rc Shear Wall ◽  
Wall Components

Reinforced concrete (RC) shear wall component is a very important lateral force-resisting member which is widely used in China. Its seismic behavior has a great impact on the seismic performance of the overall structure. Damage of some RC shear wall structures under the earthquake is caused by the damage of shear wall components, So shear wall components are an essential seismic members. However, the test datum are not enough to study the performance of RC shear wall components, Therefore, Finite element simulation of RC shear wall components is performed by software ABAQUS in the paper. Through comparing with the finite element simulation and the test of load - displacement skeleton curve, failure mode and steel bar strain, the result shows that the finite element simulation can more accurately simulate the situation of the test, verifying the finite element simulation is the most important research tool besides test.

Seismic retrofit of GLD shear wall structures in Singapore

2008 ◽  
Vol 1 (3) ◽  
pp. 198-208
Author(s):  
Z. J. Li ◽  
K. H. Tan ◽  
T. Balendra
Keyword(s):  
Shear Wall ◽  
Seismic Retrofit ◽  
Wall Structures
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