Thin Walled Design
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Finite strip method computer application for buckling analysis of thin-walled structures with arbitrary cross-sections
Abstract The Direct Strength Method (DSM) is a well-known formulation presented in the Brazilian standard ABNT NBR 14762:2010, that estimates the strength capacity of cold-formed steel (CFS) members. However, this formulation requires the elastic critical buckling loads as point of departure, regarding local (L), distortional (D) and global (G) modes, which
REM, Int. Eng. J.. Publicado em: 2021-09
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2. A methodology to investigate the influence of the fillet radius on the buckling of integrally stiffened panels
Abstract The use of integrally stiffened panels (ISP's) in wings of small and medium-sized aircraft is frequent in aviation. These thin-walled structures are often subjected to compressive loads during their life-time and, although the finite element method has become an important tool for engineers to obtain the buckling load of structural members, some res
Lat. Am. j. solids struct.. Publicado em: 22/07/2019
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3. Finite Element Analysis and Crashworthiness Optimization of Foam-filled Double Circular under Oblique Loading
Abstract Finite element analysis and optimization design carry out for the quasi static responses of foam-filled double circular tube is presented in this paper. In the investigation of the crashworthiness capability, some aspects were considered for variations in geometry parameters of tubes and the loading condition to investigate the crashworthiness capab
Lat. Am. j. solids struct.. Publicado em: 2016-11
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4. Functional Characteristics Improvement of Metal Transformable-Volume Structures for Space Applications
ABSTRACT Under conditions of the influence of space environment factors, the thin-walled load-carrying transformable-volume structures are subjected to volumetric deformation and long-time exposure to external loads, close to maximum permissible design values. The required functional properties of transformable-volume structures are ensured on the basis of a
J. Aerosp. Technol. Manag.. Publicado em: 2016-03
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5. Multi objective optimization of foam-filled circular tubes for quasi-static and dynamic responses
AbstractFuel consumption and safety are currently key aspects in automobile design. The foam-filled thin-walled aluminium tube represents a potentially effective material for use in the automotive industry, due to its energy absorption capability and light weight. Multi-objective crashworthiness design optimization for foam-filled double cylindrical tubes is
Lat. Am. j. solids struct.. Publicado em: 2015-06
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6. Local/Distortional/Global buckling mode interaction on thin walled lipped channel columns
The buckling behaviour of pin ended cold-formed steel lipped channel columns affected by local / distortional / global buckling mode interaction under axial loading is simulated by using finite element software ABAQUS, and the results are compared with the test results available in the literature. The comparisons show that the proper analysis model can simul
Lat. Am. j. solids struct.. Publicado em: 2014-12
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7. Mechanical testing of thin-walled zirconia abutments
Although the use of zirconia abutments for implant-supported restorations has gained momentum with the increasing demand for esthetics, little informed design rationale has been developed to characterize their fatigue behavior under different clinical scenarios. However, to prevent the zirconia from fracturing, the use of a titanium connection in bi-componen
J. Appl. Oral Sci.. Publicado em: 2013-02
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8. Torsional vibration of carbon nanotubes under initial compression stress
This study examines torsional vibration of Single-walled carbon nanotubes (SWCNTs) subjected to initial compression stresses. The nanotube structures are treated within the multilayer thin shell approximation with the elastic properties taken to be those of the graphene sheet. Simplified Flügge shell equations of motion are proposed as the governing equatio
Brazilian Journal of Physics. Publicado em: 2010-09
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9. FINITE ELEMENTS WITH SPLINE FUNCTIONS APPLIED TO STRUCTURAL DYNAMICS AND INSTABILITY / ELEMENTOS FINITOS COM FUNÇÕES SPLINE PARA INSTABILIDADE E DINÂMICA DE ESTRUTURAS
The present work presents a subparametric finite element model with spline displacement functions, implemented for static, dynamic and instability analysis of folded plates, thin-walled beams, box girders, and elongated structures such as bridges and structural shapes. A drilling degree of freedom (rotation about an axis perpendicular to the plane of the ele
Publicado em: 2008
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10. ANÁLISE DE CRITÉRIOS PARA ACEITAÇÃO DE ENRUGAMENTO EM DUTOS CURVADOS A FRIO / ANALYSIS OF ACCEPTANCE CRITERIA OF WRINKLES IN PIPELINE COLD BENDS
Large diameter, thin walled, high mechanical resistance steel pipe has a tendency to wrinkle on the compressive side (the intrados) of the bend when it is cold bent. This dissertation describes the principal national and international design codes that apply to wrinkling resulting from pipe cold bending, and it proposes an angle at which such wrinkling occur
Publicado em: 2008
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11. Cold-formed steel design. / Sobre os dimensionamentos de perfis de aço formados a frio.
Os perfis de aço formados a frio possuem até 3 modos de flambagem: local, distorcional e global. Essa diversificação torna muito complexa a verificação de esforços resistentes nesses perfis. Recorre-se, então a métodos simplificados e interativos, com o intuito de fornecer ao engenheiro civil ferramentas que sejam práticas e apresentem um bom resul
Publicado em: 2006
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12. Theoretical and experimental analysis of cold-formed steel members under compression / Análise teórica e experimental de perfis de aço formados a frio submetidos à compressão
Cold-formed steel members present, in general, higher local slenderness than classical hot- rolled ones, which make them more prone to local buckling. Besides, thin-walled open sections have small torsional stiffness, and hence global torsional and flexural-torsional instability modes are many times more critical than global flexural ones. Also, distortional
Publicado em: 2006