Nonlinear Creep
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Modeling the creep behavior of GRFP truss structures with Positional Finite Element Method
Abstract This paper presents the development of a formulation, based on Positional Finite Element Method, to describe the viscoelastic mechanical behavior of space trusses. The numerical method used was chosen due to its efficiency in the applications concerning nonlinear numerical analyses. The formulation describes the positional variation over time under
Lat. Am. j. solids struct.. Publicado em: 26/04/2018
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2. Estudo de parâmetros constitutivos extraídos de dados experimentais no comportamento de misturas asfálticas
É apresentado um estudo sobre a influência da escolha dos parâmetros constitutivos no comportamento de misturas asfálticas, estudando o comportamento do material tanto no regime linear como o regime não-linear de deformações. Foram utilizados os dados experimentais da dissertação de Brito (2006), no qual realizou ensaios de compressão diametral med
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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3. Caracterização viscoelástica por meio de ensaios de fluência e ruptura por fluência de compósitos poliméricos de matriz de resina epoxídica e fibra de carbono / VISCOELASTIC CHARACTERIZATION OF CARBON FIBER-EPOXY COMPOSITES BY CREEP AND CREEP RUPTURE TESTS
One of the main requirements for the use of fiber-reinforced polymer matrix composites in structural applications is the evaluation of their behavior during service life. The warranties of the integrity of these structural components demand a study of the time dependent behavior of these materials due to viscoelastic response of the polymeric matrix and of t
Publicado em: 2009
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4. Time-dependent behavior of sulphatic rocks of the anhydrite and gypsum / Comportamento dependente do tempo de rochas sulfáticas de anidrita e gipso
The purpose of this thesis is to contribute for the knowledge of time-dependent behavior of sulfatic rocks of anhydrite and gypsum. Emphasis is given to provide straightforward arguments about physical mechanisms responsible for creep observed in some underground excavations in those rocks in Europe. Explanation for this phenomena is not clear yet and studie
Publicado em: 2005
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5. Time dependent response of a rubber-toughened carbon/epoxy composite with damage accumulation
Polymeric composites are frequently modeled as linear elastic materials. However, matrix-dominated properties, such as transverse and shear modulus, can display significant nonlinear time-dependence, especially under conditions of high stress and aggressive environment. This behavior is primarily due to the viscoelastic nature of the polymeric matrix. In add
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2003-04
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6. Nonlinear time-dependent behavior of a rubber-toughened carbon/epoxy composite material with growing damage.
Neste trabalho um programa experimental foi desenvolvido para caracterizar o comportamento nÃo-linear, dependente do tempo de um compÃsito de carbono/epoxy com matriz modificada pela adiÃÃo de partÃculas de borracha. O objetivo principal foi a obtenÃÃo de equaÃÃes constitutivas para camadas inidirecionais do compÃsito sob estado plano de tensÃo qu
Publicado em: 1998
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7. The Effect of Auxin on Stress Relaxation in Isolated Avena Coleoptiles 1
In order to characterize further the mechanical properties of coleoptile cell walls, stress relaxation measurements were made on methanol-boiled sections of Avena coleoptiles. Relaxation was measured both in mechanically conditioned specimens and in specimens which had not been previously extended. In both cases the relaxation was proportional to log time. M