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ICWET'21  

         

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Research Article

Computational modeling and constructal design method applied to the geometric evaluation of stiffened thin steel plates considering symmetry boundary condition

Rodrigo Reis Amaral1Grégori da Silva Troina2Carolina Martins Nogueira2Marcelo Langhinrichs Cunha4Luis Alberto Oliveira Rocha3Elizaldo Domingues dos Santos1,2Liércio André Isoldi1,2

1Programa de Pós-Graduação em Modelagem Computacional (PPGMC), Universidade Federal do Rio Grande (FURG), Brazil                                                                                                                                                        2Programa de Pós-Graduação em Engenharia Oceânica (PPGEO), Universidade Federal do Rio Grande (FURG), Brazil                                                                                                                                                               3Programa de Pós-Graduação em Engenharia Mecânica, Universidade do Vale do Rio dos Sinos (Unisinos), Brazil                                                                                                                                                                                 4Escola de Engenharia (EE), Universidade Federal do Rio Grande (FURG), Brazil

Keywords

Abstract



Stress minimization;


Deflection minimization;


Plate with stiffeners;


Geometric evaluation



The present article presents a geometric evaluation of stiffened plates employing the symmetry boundary condition. The computational models were developed in the software ANSYS, based on the Finite Element Method, using the SHELL281 finite element. As expected, the numerical simulations considering the symmetry demonstrated a gain in computational processing because of the possibility of developing the models in a quarter of a plate rather than simulating the entire plate, without accuracy loss. The geometric configurations are obtained through the application of Constructal Design. For this, some geometric parameters are varied (degrees of freedom) and others are kept fixed (restrictions). After that, these plates with different geometries are numerically simulated and their mechanical behaviors (deflection and stress) are compared to each other through the Exhaustive Search Technique. Then, it is possible to define the stiffened plate that has the best mechanical behavior. For this, a reference plate without stiffeners was used. In this plate part of its volume of material was transformed into stiffeners by reducing the thickness of the same, thus maintaining the value of the length and the value of the width as constants. The objective here is to determine the geometric configurations that minimize the maximum deflection and the maximum von Mises stress of the stiffened plates. The obtained results showed that, by transforming part of the volume of the reference plate into stiffeners, structural stiffness gains can be achieved in the stiffened plates when compared with the values of deflection and stress reached by the reference plate. © 2019 MIM Research Group. All rights reserved.

LATEST News


15/03/2021 Collaboration for ICWET'21: Editorial Board of our journal and Organizing Committee of the6th International Conference on Welding Technologies and Exibition (ICWET’21) have agreed to collaborate. Extended versions of the selected papers from the conference will be published in our journal. For more see Events.


11/02/2021 Collaboration for ULIBTK 2021: Editorial Board of our journal and Organizing Committee of the 23. Congress on Thermal Science and Technology (ULIBTK 2021) have agreed to collaborate. Extended versions of the selected papers from the conference will be published in our journal. For more see Events.


31/12/2020 Most Cited Award: 

According to the Editorial Board evaluation, the paper authored by Nelson Batista, Rui Melicio, Victor Mendes entitled as “Darrieus vertical axis wind turbines: methodology to study the self-start capabilities considering symmetric and asymmetric airfoils" is awarded the 2020 Most Cited Paper Award of Research on Engineering Structures and Materials (RESM).


31/12/2020 Best Paper Award:

According to the Advisory Board decision, the paper authored by Marcelo Mesquita do Amaral, Matheus Wanglon Ferreira and Mauro de Vasconcellos Real entitled as “A simplified method for analysis of reinforced concrete beams exposed to fire situation” is awarded the 2020 Best Paper Award of Research on Engineering Structures and Materials (RESM).



(More details of the news may be given in the News section)


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LATEST AWARDS


2020 Most Cited Paper Award:

The paper authored by Nelson Batista, Rui Melicio, Victor Mendes entitled as “Darrieus vertical axis wind turbines: methodology to study the self-start capabilities considering symmetric and asymmetric airfoils" is awarded the


2020 Best Paper Award:

The paper authored by Ahsen Ünal, Işıl Özer, Melek Erol Taygun, Sadriye Küçükbayrak entitled as “Fabrication and in-vitro evaluation of copper doped bioactive glass/polymer composite scaffolds for bone tissue engineering” is awarded the 


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Last Update:

27.10.2021

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