The results from the analysis of a high-rise frame structure with a concrete core will be used to determine how dependable this process actually is. KEYWORDS: Multi-story buildings, Equivalent cubes 1. INTRODUCTION Finite element modeling is often used to prevail over overcome experimental limitations in forecasting and examining the performance of structures. When planning and examining the performance of high-rise buildings, it is critical that a successful modeling practice is used due to the difficulties of real structural behavior and full scale measurement. Previously, a number of different modeling techniques have been used to examine the performance of high-rise buildings [1-6]. Pekau et al. [1, 2] introduced the “Finite Story Method,” which can reduce the unknowns of each storey in a high-rise building, thus improving the computing efficiency considerably. A program developed by Oztorun et al.  contains a special mesh generation subroutine and graphics program for the finite element analysis of shear walls in buildings. Through this program, beams or columns can be put in or taken out at a moment’s notice; this makes the modeling process suitable. Mahendran et al.  argued that a 2-D modeling analysis was not adequate to forecast the actual performance of the structures; thus, a 3-D modeling method for steel portal frame buildings is required. Poulsen et al.  gave information about how to judge the reinforcing bars and tension or compression behavior of concrete in the limit state analysis of reinforced concrete plates subjected to in-plane forces. This is helpful for analysis of single reinforced elements. When modeling high- rise structures, there are regularly fears over node limitations and rising computational time and memory capacity of finite element analysis tools, such as ANSYS. This technique can be used in the substructure. One method involving substructures is a supper-element method that was introduced by Kim et al  to model shear wall structures. Through this method, equal accuracy within a shortened computing time can be reached. It was also discovered that a great deal of modeling work has centered on the seismic or wind behavior of structures [7-16], as these lateral loads are the most serious external loads and have the potential to severely damage high-rise buildings. Virtually every single one of these models is concerned about a limit state analysis or forecast. There can now be confidence in the seismic or wind analysis of framed [7, 14] and reinforced concrete shear wall structures  due to the research that has been carried out in these areas. Despite this, many of these methods are based around 2-D models that entail many simplifications when compared to the real performance of 3-D structures. In spite of the fact that some 3-D models were used in the analysis, these models were restricted to modeling single elements. It would seem that the situation above is mainly due to the restrictions of current FE analysis tools. Oztorun et al.  made the point that due to the great and intricate number of input requirements and node limitations, utilization of other finite element analyzing software, such as SAP90, seems to be unfeasible. Due to the many software restrictions, the 3-D analysis of high-rise buildings is very difficult, particularly when analysis of contributions of non-structural components to the building stiffness is
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ABSTRACT: In order to prevail over experimental limitations, finite element modeling is often used to forecast and examine the performance of structures. Despite this, 3-D analysis of high-rise buildings is difficult and intricate because of certain software restrictions…
However, the use of the finite study has yielded theoretical convergence normally based on the numerical solutions from the models selected. The study of convergence is done via the use of the numerical results as the number of elements increase. The present paper is based on providing the convergence of various elements with different number of nodes.
. Finite element analysis (FEA) is a computer-based numerical technique applying the finite element method, which can be used for calculating the strength and behaviour of engineering structures. It can be used to calculate including deflection, stress, vibration, buckling behaviour and many other phenomena.
Finite element analysis uses a network of grids obtained from connecting several points called nodes specified on the problem body or surface. These grids are called as meshes. The characteristics about the materials and its properties are programmed in the meshes which will be used to determine the system behavior under externally imposed conditions.
At the time his work was largely ignored, primarily because there was no practical value to it since computers were not available to solve the enormous number of equations.
Today, with worldwide use of computers, finite element analysis is used in numerous applications involving complicated mathematical problems.
hat Courant developed the method into what we know today when he used the principle of potential energy and piecewise polynomial interpolation to study the Saint-Venant torsion problem. At the time his work was largely ignored, primarily because there was no practical value to
The finite element method is applicable on solids; liquids, plasma and gaseous substances, and problems related to soil mechanics, electromagnetism and dynamics can be traced through this technique. This exercise is based upon the theory which sub-divides a complicated
As a result various features of physical behaviour are sometimes not undertaken in the analysis. A computer program cannot be free from errors because of the large amount of coding associated with it. Large computer programs involve a lot of computing
Finite element method enables a company to verify proposed designs, modify structure or existing products that are to be used for new service conditions, and in case of structural failure, it may be used to determine design modifications that are required to meet the deserved new condition.
They use the 100*n plate elements. Similarly, this means that 100 plate elements in the x direction, and n number of elements in the y direction.
2 software programs may give different results for the same single
Discretisation errors arise when a continuous mathematical model is discretized into a FE model. Solution errors stem from the process of numerical solution to the FE equations. It is important to consider that errors may arise due to incorrect
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