scholarly journals Desenvolvimento de um programa computacional para análise de vigas Euler-Bernoulli utilizando a linguagem Pytho

2018 ◽  
Vol 1 (38) ◽  
pp. 54
Author(s):  
Alysson Aldrin Barreto Bezerra ◽  
Luanda Maria Sousa da Silva ◽  
Antônio Wagner de Lima
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Teaching And Learning ◽  
Elastic Behavior ◽  
Element Analysis ◽  
Technological Support ◽  
Linear Elastic ◽  
The Finite Element Analysis ◽  
Practical Development ◽  
The Many

Among the many areas of Civil Engineering, there is one known as Structures. In view of the growing sophistication of the constructions, and consequently an increase in the complexity of the calculations involved, auxiliary computational software has been revolutionizing this area. Already present in the professional work of the engineer, this technological support has a direct effect on the teaching and learning process, since many computer programs, some of them difficult to understand by students, are study tools of the disciplines of the Structures area. Among the contents in which the students present more difficulty, there is Finite Element Analysis, a discipline offered on graduation and that had its practical development linked to the advent of computation. By being the method most used as a computational tool in the field of engineering these days, this knowledge is indispensable to the students of this course. The objective of this work is to construct a computational code in order to facilitate the study of linear-elastic behavior of Euler-Bernoulli beams with punctual loads using the Finite Element Analysis. For this, a numerical example was analyzed, with the aid of a program implemented with the Python® language, to reinforce the effectiveness of the program and, consequently, to promote the improvement of student learning.

Sensitivity Investigation of Specimen Shape on Elastic Behaviour of Perforated Plate

2009 ◽  
Author(s):  
Chang-Hoon Ha ◽  
Tae-Jung Park ◽  
Moo-Yong Kim ◽  
Kwang-Sang Seon ◽  
Jae-Mean Koo ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Perforated Plate ◽  
Type Specimen ◽  
Elastic Behavior ◽  
Elastic Behaviour ◽  
Element Analysis ◽  
Bending Tests ◽  
The Finite Element Analysis ◽  
Specimen Shape

There are various types of tube support plates installed in a steam generator according to the component designer’s preference. Most widely used types of tube support plates are BTSP (broached tube support plate), ATSG (advanced tube support grid), and the eggcrate. In this study, trefoil BTSP specimens made of ASME stainless steel are analyzed and tested. This study is to investigate the effect of specimen shape on an elastic behavior of trefoil BTSP through the compression and bending tests. Prior to the compression and bending tests of BTSP specimens, the equivalent elastic properties of BTSP unit cell are analyzed by the finite element analysis according to the different loading orientation as well as size of the model. Autodesk® Inventor™ software was used to make an analytical model and ANSYS® software was used for the finite element analysis and post-processing. Five and three different shapes of trefoil BTSP specimens are machined and utilized for the compression and bending (4-point and 3-point side bending) tests, respectively. Through the finite element analyses, compression, and bending tests, the equivalent elastic modulus of trefoil BTSP specimen is suggested to be 6,254MPa (907ksi) and the equivalent Poisson’s ratio as 0.64. Specifically the CS5 type specimen which has a ratio of one-fourth (= width/length) was revealed as an appropriate shape of specimen to show those elastic behavior.

Thrust Line Using Linear Elastic Finite Element Analysis for Masonry Structures

2010 ◽  
Vol 133-134 ◽  
pp. 503-508 ◽  
Author(s):  
Mahesh Varma ◽  
R.S. Jangid ◽  
Siddhartha Ghosh
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Masonry Structure ◽  
Masonry Structures ◽  
Element Analysis ◽  
Linear Elastic ◽  
The Finite Element Analysis ◽  
Structural Engineer ◽  
The Stability ◽  
Line Analysis

Failure of masonry structures are generally studied in terms of the formation of unstable mechanisms and the thrust line approach is considered to be the most useful tool for this. Thrust line analysis is a simple technique for studying the stability of masonry structures, although its applicability is limited to specific types of structures because of various implicit assumptions. Finite element analysis, on the other hand, is versatile but computationally more intensive. This paper presents a linear elastic finite element analysis based method of obtaining the thrust line of a masonry structure. The proposed method allows the application of the thrust line analysis to structures with any complicated geometry while retaining the simplicity of this approach for studying the stability of a masonry structure. The proposed method is applied to various case study structures and the sensitivity of the results to the adopted material property data in the finite element analysis is studied. The proposed method also allows a structural engineer, who is usually familiar with the finite element analysis, to easily migrate to the stability analysis of masonry systems.

A New 3D Analytical Method for Calculating the Longitudinal Stress-Strain of Bones, as ‘N’ Different Asymmetrical Linear Elastic Materials, Loaded Together Eccentrically

2000 ◽  
Author(s):  
Nader Arafati
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Analytical Method ◽  
Hip Prosthesis ◽  
Three Dimensional ◽  
Elastic Materials ◽  
Stress Strain ◽  
Element Analysis ◽  
Linear Elastic ◽  
The Finite Element Analysis

Abstract We describe a three-dimensional analytical method to evaluate the stress-strain of « n » different asymmetrical linear elastic materials, loaded together by eccentric forces and moments. If one assumes that each bone is composed of a number of different linear elastic materials, this method could be used to determine the stress-strain values of any bone. Mesh generation is unnecessary with this method, the only requirement being to determine the contours of each material. We used this method to analyze the longitudinal stresses imposed on the femur, after implantation of cemented hip prosthesis. The results were compared with those of finite element analysis without any contact elements. Considerable differences were found, particularly for exterior prosthesis contours. When the same error was entered into a cylindrical analytical model, the similar errors were found, indicating that not using contact elements may result in unacceptable errors with the finite element analysis method.

Interactive Graphics for the Analysis of Tires

1985 ◽  
Vol 13 (3) ◽  
pp. 127-146 ◽  
Author(s):  
R. Prabhakaran
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Approximate Solutions ◽  
Interactive Graphics ◽  
Element Analysis ◽  
Analysis Process ◽  
Physical Problems ◽  
The Finite Element Analysis ◽  
Analysis Computer ◽  
Discretization Technique

Abstract The finite element method, which is a numerical discretization technique for obtaining approximate solutions to complex physical problems, is accepted in many industries as the primary tool for structural analysis. Computer graphics is an essential ingredient of the finite element analysis process. The use of interactive graphics techniques for analysis of tires is discussed in this presentation. The features and capabilities of the program used for pre- and post-processing for finite element analysis at GenCorp are included.

Finite Element Analysis of Nonuniformity of Tires with Imperfections5

2007 ◽  
Vol 35 (3) ◽  
pp. 226-238 ◽  
Author(s):  
K. M. Jeong ◽  
K. W. Kim ◽  
H. G. Beom ◽  
J. U. Park
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Radial Force ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Dimensional Finite Element ◽  
Force Variation ◽  
Three Dimensional Finite Element

Abstract The effects of variations in stiffness and geometry on the nonuniformity of tires are investigated by using the finite element analysis. In order to evaluate tire uniformity, a three-dimensional finite element model of the tire with imperfections is developed. This paper considers how imperfections, such as variations in stiffness or geometry and run-out, contribute to detrimental effects on tire nonuniformity. It is found that the radial force variation of a tire with imperfections depends strongly on the geometrical variations of the tire.

Use of the Finite Element Analysis Method in Pedodontics

2018 ◽  
Vol 55 (4) ◽  
pp. 666-675
Author(s):  
Mihaela Tanase ◽  
Dan Florin Nitoi ◽  
Marina Melescanu Imre ◽  
Dorin Ionescu ◽  
Laura Raducu ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Structural Model ◽  
Analysis Method ◽  
Ansys Software ◽  
Concentrated Force ◽  
Element Analysis ◽  
Finite Element Analysis Method ◽  
The Finite Element Analysis ◽  
Solid Type

The purpose of this study was to determinate , using the Finite Element Analysis Method, the mechanical stress in a solid body , temporary molar restored with the self-curing GC material. The originality of our study consisted in using an accurate structural model and applying a concentrated force and a uniformly distributed pressure. Molar structure was meshed in a Solid Type 45 and the output data were obtained using the ANSYS software. The practical predictions can be made about the behavior of different restorations materials.

A necessary modification for the finite element analysis of cracked members detection, construction, and justification

2013 ◽  
Vol 83 (7) ◽  
pp. 1087-1096 ◽  
Author(s):  
A. Ranjbaran ◽  
H. Rousta ◽  
M. O. Ranjbaran ◽  
M. A. Ranjbaran ◽  
M. Hashemi ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Cracked Members

Modeling and experimental verification on directivity of an electret cell array loudspeaker

2012 ◽  
Vol 24 (3) ◽  
pp. 326-333 ◽  
Author(s):  
Yu-Chi Chen ◽  
Wen-Ching Ko ◽  
Han-Lung Chen ◽  
Hsu-Ching Liao ◽  
Wen-Jong Wu ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Digital Control System ◽  
Analysis Model ◽  
Cell Array ◽  
Element Analysis ◽  
Finite Element Analysis Model ◽  
The Finite Element Analysis ◽  
Directivity Characteristics

We propose a model to give us a method to investigate the characteristic three-dimensional directivity in an arbitrarily configured flexible electret-based loudspeaker. In recent years, novel electret loudspeakers have attracted much interest due to their being lightweight, paper thin, and possessing excellent mid- to high-frequency responses. Increasing or decreasing the directivity of an electret loudspeaker makes it excellent for adoption to many applications, especially for directing sound to a particular area or specific audio location. Herein, we detail a novel electret loudspeaker that possesses various directivities and is based on various structures of spacers instead of having to use multichannel amplifiers and a complicated digital control system. In order to study the directivity of an electret loudspeaker based on an array structure which can be adopted for various applications, the horizontal and vertical polar directivity characteristics as a function of frequency were simulated by a finite-element analysis model. To validate the finite-element analysis model, the beam pattern of the electret loudspeaker was measured in an anechoic room. Both the simulated and experimental results are detailed in this article to validate the various assertions related to the directivity of electret cell-based smart speakers.

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