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RISS 인기검색어
- 검색키워드
- 저자 : Emanuele Maiorana (검색결과 5 건)
- 무료
- 기관 내 무료
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Linear Elastic Behavior of Circular Holed Steel Box Sections Under Compression
Emanuele Maiorana,Carlo Pellegrino 한국강구조학회 2018 International Journal of Steel Structures Vol.18 No.3
The aim of this work is to provide insights into the linear elastic behavior of steel box sections with centered and eccentric holes, placed at various points on the sides and at the corners of sections, and subjected to uniform compression. The infl uence of the following parameters was observed on stability, mainly through critical deformed shapes: (a) ratio of section aspects, (b) length-to-width ratio, (c) slenderness of sides, (d) diameter of holes, (e) coordinates x and y of the position of the hole on one side of the box section. Indications regarding important design aspects are given: (a) the best location for a single hole, or several holes, in cross-section; (b) the eff ects of circular holes with small, medium and large diameters on the linear buckling factor; (c) the eff ect of symmetric and eccentric holes for purposes of stability; (d) the best performing transversal section for square to rectangular holed box sections, in terms of stability; (e) critical slenderness values at which transition occurs from ultimate strength collapse of stocky box sections and critical elastic stress of slender ones.
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Linear buckling analysis of welded girder webs with variable thickness
Emanuele Maiorana,Carlo Pellegrino 국제구조공학회 2011 Steel and Composite Structures, An International J Vol.11 No.6
Steel girder web panels have been subjected in recent decades, to a number of experimental and numerical studies but the mechanisms that regulate the behaviour of the panels composed by two subpanels with different thickness were not deeply studied. Furthermore specific design rules regarding the estimation of the buckling coefficient for panels with variable thickness are not included in the codes even if this is a common situation particularly for steel bridge girders with beams having significant height. In this framework,this work aims to investigate buckling behaviour of steel beams with webs composed of panels with different thicknesses subjected to both in-plane axial compression and bending moment and gives some simplified equations for the estimation of the buckling coefficient.
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Elasto-plastic behaviour of perforated steel plates subjected to compression and bending
Emanuele Maiorana,Carlo Pellegrino,Claudio Modena 국제구조공학회 2011 Steel and Composite Structures, An International J Vol.11 No.2
The aim of this work is to provide some insights into the elasto-plastic behaviour of plate girder web square and rectangular panels with centred and eccentric holes under both compression and in-plane bending moment. The numerical study was validated comparing the numerical results obtained for one simple steel plate configuration with the corresponding experimental results, obtained at the University of Padova, observing the influence of the initial out-of-plane imperfections on the force vs. displacement relationship and ultimate strength. Once validated the numerical approach, the effect of bending moment on the stability of the plate is studied and some differences with respect to the uniform compression load case are shown. The influence of dimension and position of the hole, the plate aspect ratio and the steel grade on elasto-plastic behaviour is observed. Some indications regarding the critical slenderness (at which transition from elastic to plastic collapse occurs) are given for square and rectangular plates with symmetric and eccentric holes having small, medium and large diameter.
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Non-linear Analysis of Corrugated Plate Girders Under Patch Loading
Emanuele Maiorana,Guillaume Hervé Poh’sié,Clinton Chisom Emechebe 한국강구조학회 2023 International Journal of Steel Structures Vol.23 No.3
This work aims to analyze the effects of patch loading and load eccentricities on flat and corrugated plate girders in the linear and non-linear elastic fields considering variations in slenderness, aspect ratio, loading length, loading width, corrugated angles, local and global fold ratios. To attain these objectives, thirty-five plate girders were modeled for both linear and non-linear buckling analysis, which consisted of ten flat and twenty-five corrugated plate girders. Theoretical values of patch loading resistance were computed using Eurocode and specifications by other authors. In addition, a finite element package Abaqus program was used to obtain numerical results by geometrical and material non-linear analysis using geometric imperfections. Model verification was executed by the comparison of the theoretical and finite element results and from past experimental results obtained by other authors. In corrugated members, patch loading resistance increases with increasing corrugated angles and decreases with increasing global fold ratio. Corrugated members show higher patch loading resistance than equivalent flat web members, which could result in a 15% material reduction per unit length along the longitudinal span in the use of corrugated plates girders over flat plate girders.
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A Review of the Fatigue Strength of Shear Bolted Connections
Paolo Zampieri,Andrea Curtarello,Emanuele Maiorana,Carlo Pellegrino 한국강구조학회 2019 International Journal of Steel Structures Vol.19 No.4
Steel bolted connections are the typical joints used in civil engineering but also in the fi eld of mechanical engineering. In particular, slip-resistant bolted connections are those most used in bridge construction. In these applications, bolted joints are subjected to a cyclic load that arises from traffi c fl ow. It is well known that joints are the critical components of constructions subjected to cyclic loads, due to stress concentration that causes fatigue crack initiation. The purpose of this paper is to provide a summary of considerations, from principal scientifi c studies of fatigue strength and the behaviour of bolted joints, as well as an up-to-date comprehensive assessment for future development. In particular, a discussion is proposed regarding the parameters that infl uence the fatigue of bolted joints. The paper concludes with a summary of the major results reported in terms of S–N curves.
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