NUMERICAL ANALYSIS OF PERFORATED STEEL PLATES SUBJECTED TO ELASTIC AND ELASTO-PLASTIC BUCKLING BY MEANS THE CONSTRUCTAL DESIGN METHOD

This paper presents the innovative use of hot-rolled thickness-tapered mill products, longitudinally profiled (LP) plates, for the seismic performance of bridge bents of single and portal framed piers. The study involves the inelastic cyclic testing and numerical analysis of tested beam-columns and portal frames in order to evaluate the effects of tapering ratios of LP plates, penetration of yielding, and number of locally buckled panels on their structural ductility. A structural design method is proposed for the portal frames having LP panels under cyclic loadings.

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Geometric evaluation of steel plates subjected to uniform transverse load with rectangular or trapezoidal stiffeners by means constructal design method

International Journal of Hydromechatronics ◽

10.1504/ijhm.2020.107788 ◽

2020 ◽

Vol 3 (2) ◽

pp. 190

Author(s):

Vinícius Torres Pinto ◽

Marcelo Langhinrichs Cunha ◽

Kauê Louro Martins ◽

Luiz Alberto Oliveira Rocha ◽

Mauro De Vasconcellos Real ◽

...

Keyword(s):

Design Method ◽

Steel Plates ◽

Transverse Load ◽

Constructal Design

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NUMERICAL SIMULATION ANDCONSTRUCTAL DESIGN APPLIED TO THE STUDY OF ELASTIC BUCKLING IN THIN STEEL PLATES WITH OBLONG PERFORATIONS

Exatas & Engenharia ◽

10.25242/885x82020181312 ◽

2018 ◽

Vol 8 (20) ◽

Author(s):

Emilio Gabriel Gonçalves Folzke ◽

Thiago Da Silveira ◽

João Paulo Silva Lima ◽

Luiz Alberto Oliveira Rocha ◽

Elizaldo Domingues Dos Santos ◽

...

Keyword(s):

Critical Load ◽

Volume Fraction ◽

Design Method ◽

Steel Plates ◽

Constructal Theory ◽

Elastic Buckling ◽

The Finite Element Method ◽

Perforated Plates ◽

Constructal Design ◽

Thin Steel

ABSTRACTBuckling is an instability phenomenon that can happen when a slender plate is subjected to axial compression loads. In addition, perforated plates are often necessary in the engineering field. Throughout this article, the Constructal Design Method, which is based on the Constructal Theory, has been used to evaluate the influence of the hole on thin steel plates under elastic buckling. For that, the different types of holes analyzed were both transversal and longitudinal oblong. They were all placed in the center of the plate. The geometry of the hole varied according to the degree of freedom H0/L0, which relates the dimensions of each type of different hole. The size of the perforation are varied by means the hole volume fraction (f) parameter, that represents the relation between the volume of the hole and the total volume of the plate (without hole). The main goal is to achieve the greatest critical load for the perforated plates. To do so, the ANSYS software, based on the Finite Element Method (FEM), has been used to numerically analyze the elastic buckling in each case. It has been observed the importance of the geometry when seeking superior performances: through a simple fluctuation of the geometry of the hole, once the volume fraction was kept constant, it was possible to achieve a significant increase on the critical loads. Key words: Buckling; Computational Modeling; Critical Load; Constructal Design.

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