Buckling Curves
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Nonlinear Analysis on Buckling and Postbuckling of Stiffened FGM Imperfect Cylindrical Shells Filled Inside by Elastic Foundations in Thermal Environment Using TSDT
Abstract The main aim of this paper is to investigate analytically nonlinear buckling and post-buckling of functionally graded stiffened circular cylindrical shells filled inside by Pasternak two-parameter elastic foundations in thermal environments and under axial compression load and external pressure by analytical approach. Shells are reinforced by closel
Lat. Am. j. solids struct.. Publicado em: 2017-06
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2. Study About Buckling Phenomenon in Perforated Thin Steel Plates Employing Computational Modeling and Constructal Design Method
Abstract Perforated steel thin plates are commonly used in structural engineering. Due to their geometric characteristics, these panels can suffer the undesired buckling phenomenon. In this context, the present work associates the computational modeling and the constructal design method to evaluate the influence of the geometric configuration in the plate bu
Lat. Am. j. solids struct.. Publicado em: 2016-10
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3. 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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4. Parametric study on average stress-average strain curve of composite stiffened plates using progressive failure method
The post-buckling behavior of composite ships' stiffened plate panels has been studied. In this study, the average strain- average stress curves for these panels are derived using progressive failure method as well as nonlinear finite element method. The boundary conditions are appropriate for the continuous plate panels used in shipbuilding. The effects of
Lat. Am. j. solids struct.. Publicado em: 2014
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5. Transient stability of empty and fluid-filled cylindrical shells
In the present work a qualitatively accurate low dimensional model is used to study the non-linear dynamic behavior of shallow cylindrical shells under axial loading. The dynamic version of the Donnell non-linear shallow shell equations are discretized by the Galerkin method. The shell is considered to be initially at rest, in a position corresponding to a p
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2006-09
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6. 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
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7. Análise numérica não-linear da flambagem local de perfis de aço estrutural submetidos à compressão uniaxial
Local buckling of plates normally presents large displacements in the normal direction of the medium plane of the plate due to small loading changes, with the axis of the bar remaining straight. This is a typical phenomenon of axially compressed steel columns, composed either with welded or hot- rolled structural shapes. When the plate buckles locally, there
Publicado em: 2006
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8. ELASTIC-PLASTIC HYSTERESIS LOOPS INDUCED BY COMPLEX LOADING / LAÇOS DE HISTERESE ELASTOPLÁSTICOS GERADOS SOB CARREGAMENTO COMPLEXOS
The main objective of this work was to experimentally study the cyclic elastoplastic behavior under complex leading of two structural steels, named API S-135 and AISI 4340. In order to minimize experimental errors, some problems were studied with unusual care. The influence of the residual bending moment on the EN tests was measured, using a special specimen
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/01/2000
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9. Analise de porticos metalicos planos com conexões semi-rigidas considerando a não linearidade fisica e geometrica
: In this work, utilizing numeric process, are presented analyses of plane steel frames, deformables by flexion and axial force. In this analyses, are considered the effects of the structure geometric nonlinearity, of the material physical nonlinearity associated to the behaviour of semi-rigid connections. Are presented the models to the consideration of the
Publicado em: 1999
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10. Analise e dimensionamento de estruturas metalicas planas considerando a não linearidade geometrica e fisica
This work presents a formulation to consider the nonlinear effects in the structural ana/ysis of rigid plane frames. This formu/ation is based on the stability functions matrix method. The stability functions are obtained after solving the governing differential equations of the problem (assuming that strains are small and neglecting the axial deformation of
Publicado em: 1998
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11. Elasticity and Electrostatics of Plectonemic DNA
We present a self-contained theory for the mechanical response of DNA in single molecule experiments. Our model is based on a one-dimensional continuum description of the DNA molecule and accounts both for its elasticity and for DNA-DNA electrostatic interactions. We consider the classical loading geometry used in experiments where one end of the molecule is
The Biophysical Society.