Three Dimensional Non-Linear Analysis of Building Pounding During Earthquakes

2009 ◽  
Author(s):  
H.P. Mouzakis ◽  
M. Papadrakakis ◽  
A.S. Alevridis
Keyword(s):  
Three Dimensional ◽  
Linear Analysis ◽  
Non Linear

scholarly journals Nonlinear analysis of water-soil-barrage floor interaction

2018 ◽  
Vol 162 ◽  
pp. 03013
Author(s):  
Abdul-Hassan Al-Shukur ◽  
Atheer Zaki Al-Qaisi ◽  
Ayaat Majid Al-Rammahi
Keyword(s):  
Three Dimensional ◽  
Seepage Flow ◽  
Linear Analysis ◽  
Exit Point ◽  
Rock Foundation ◽  
Operation Condition ◽  
Linear Deformation ◽  
Structure Interaction ◽  
Non Linear ◽  
Different Characteristics

Fluid - Structure Interaction (FSI) and Soil-Structure Interaction (SSI) are mostly considered in the non-linear analysis of water-soil-barrage floor interaction. A three dimensional (3D) - section of a barrage is selected and modelled via ANSY 15.0. The ogge barrage floor shape has been taken as a case study of analysis. The non-linear analysis of the structure model is developed through selecting suitable available elements in ANSYS which are related to the case under study and is compared with linear analysis. The results of the analysis are obtained by suggesting different characteristics of concrete, soil, and rock materials as a parametric study. Both closed barrage and in operation are the cases have been considered in analysis. It is concluded from this study that ANSYS/APDL is adequate tool to simulate and analysis the problem that need sufficient experiences to select suitable available elements to get the acceptable results. It is also concluded that the deformation in barrage floor has little difference by (6%) in linear and non-linear analysis in case of no operation. While this deformation in non-linear analysis with operation condition is less by (13%) than of no operation case. The non-linear deformation of barrage floor is more effective by change of density of barrage concrete itself, modulus of elasticity and yield stress of both soil and rock foundation materials, while no sensitive effect of change of Poisson’s ratio on the deformation. The maximum seepage flow at exit point downstream barrage floor with upstream and downstream piles is lesser by (67.40%) than without pile. In the view of stability, it is concluded that the barrage floor is already safe in exist gradient and piping problems with or without piles.

scholarly journals NON-LINEAR ANALYSIS TO IMPROVE PUNCHING SHEAR STRENGTH IN FLAT SLAB USING Z-SHAPE SHEAR REINFORCEMENT

2019 ◽  
Vol 7 (1) ◽  
pp. 65-70
Author(s):  
Abdulnasser M. Abbas
Keyword(s):  
Shear Strength ◽  
Three Dimensional ◽  
Linear Analysis ◽  
Punching Shear ◽  
Stress Concentrations ◽  
Structural Behaviour ◽  
Shear Forces ◽  
Construction Time ◽  
Flat Slab ◽  
Non Linear

Currently, flat slabs become one of the widely used structures due to its architectural benefits such as uncomplicated formwork, flexibility and minimum construction time. However, these structures are relatively weak to resist the punching shear due to a considerable lowering in stiffness induced from the development of cracks that resulting from axial and seismic loads. Moreover, the punching failure is considered a brittle failure caused by the transferring of unbalanced moments and shear forces between the structural members. Unfortunately, this may cause a catastrophic collapse, especially in the region of the slab-column. Therefore, many experimental and theoretical studies were done to improve the punching strength of the flat slab. In the current work; a finite element three-dimensional non-linear analysis has simulated by ABAQUS tool to investigate the structural behaviour of flat slab. Two specimens have considered, the first is a flat slab reinforced by ordinary steel reinforcement. While in the second one, a Z-shape shear rebar improvement has been added to the slab-column connection. The proposed model has reflected a reasonable enhancement to the flat slab. The analysis considers different parameters such as punching shear forces, deformations, and stresses of Von-Mises. The outcomes indicate that punching shear strength is increased by approximately 11.1%, and the deflections are decreased by 77.3% when the Z-shape reinforcement is used. In the meantime, stress concentrations were reduced and move from the slab-column connection.

scholarly journals Three-Dimensional Non-Linear Analysis based on the Temporal Evolution of an RCC Dam Including the Alluvium Effect

2021 ◽  
Vol 67 (1) ◽  
pp. 11-20
Author(s):  
Mustapha Adjadj ◽  
Yaaqoub Aliouche ◽  
Mohamed Meksaouine
Keyword(s):  
Temporal Evolution ◽  
Three Dimensional ◽  
Linear Analysis ◽  
Rcc Dam ◽  
Non Linear

scholarly journals Three-dimensional non-linear analysis of magnetic field and stress in a ferromagnetic material.

1988 ◽  
Vol 59 (5) ◽  
pp. 392-402
Author(s):  
Tatsuya Oohira ◽  
Kohichi Miyata ◽  
Toshiyuki Takagi ◽  
Kenzo Miya
Keyword(s):  
Magnetic Field ◽  
Three Dimensional ◽  
Ferromagnetic Material ◽  
Linear Analysis ◽  
Non Linear
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