Circular Section
Mostrando 1-12 de 91 artigos, teses e dissertações.
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1. Numerical modeling of circular, square and rectangular concrete columns wrapped with FRP under concentric and eccentric load
Resumo Neste artigo é apresentada a modelagem numérica em elementos finitos de pilares com seções transversais circular, quadrada e retangular solicitados por força centrada e excêntrica, reforçados com PRF. O modelo numérico foi calibrado com os resultados experimentais e indicou boa compatibilidade de forças axiais, deformações axiais e deforma�
Rev. IBRACON Estrut. Mater.. Publicado em: 18/07/2019
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2. Behaviour of hollow circular section with multiple perforations under compression, flexure and torsion
Abstract Effect of the presence of perforations on thin structure has been extensively investigated for decades. Various perforation parameters were investigated in past studies. However, study on thin cylinder with multiple perforations has not been carried out. In searching for lighter structural members, the concept of perforated hollow section has been i
Lat. Am. j. solids struct.. Publicado em: 14/03/2019
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3. Uso do diafragma externo na ligação entre viga de seção I e pilar tubular de seção circular
Resumo O diafragma externo na ligação entre viga metálica de seção I e pilar metálico tubular de seção circular tem por objetivo o aumento na eficácia da transferência dos esforços. A proposta é dar alternativas ao uso desse sistema estrutural, reduzindo a limitação imposta por sua simples ligação ao se adicionar esse elemento, similar a um a
Ambient. constr.. Publicado em: 2019-03
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4. Failure Theories and Notch Type Effects on the Mechanical Properties of Jute-Glass Hybrid Composite Laminates
This study aimed to analyze the mechanical properties and damage characteristics in uniaxial tensile loading of two hybrid composite laminates consisting of an ortho-therephthalic polyester matrix reinforced by bidirectional jute fabrics and E-glass fibers, with different configurations and types of geometric discontinuities in the longitudinal section, char
Mat. Res.. Publicado em: 31/01/2019
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5. Behavior and design of built-up compressed steel members composed of concentric hot rolled circular hollow sections
Abstract This research presents a study of the behavior of built-up compressed steel members composed of concentric hot rolled circular hollow sections. The use of these members is an innovative solution of practical interest for situations in which a single member does not reach the required compressive strength. Some technically and economically viable de
Lat. Am. j. solids struct.. Publicado em: 02/07/2018
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6. Influence of shear lag coefficienton circular hollow sections with bolted sleeve connections
Abstract The circular hollow sections (CHS) are being widely employed in steel structures around the world, increasing the development of new researches. This article proposes an innovative connection model for circular hollow sections that facilitates and reduces the assembly cost of hollow section structures. The proposed connection is a tube sleeve, used
REM, Int. Eng. J.. Publicado em: 2017-12
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7. Band Structure in Carbon Nanostructure Phononic Crystals
We investigate the band structure of elastic waves propagating in carbon nanostructure phononic crystals with square, rectangular, triangular, honeycomb and Kagomé lattices. We also study the influence of carbon nanostructure cross section geometry - circular, hollow circular, square and rotated square with a 45° angle of rotation with respect to the x and
Mat. Res.. Publicado em: 27/11/2017
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8. Complete Band Gaps in Nano-Piezoelectric Phononic Crystals
We study the band structure of elastic waves propagating in a nano-piezoelectric phononic crystal consisting of a polymeric matrix reinforced by BaTiO3 inclusions in square, rectangular, triangular, honeycomb and Kagomé lattices. We also investigate the influence of inclusion cross section geometry - circular, hollow circular, square and rotated square with
Mat. Res.. Publicado em: 30/10/2017
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9. A Variable-Length Beam Element Incorporating the Effect of Spinning
Abstract This paper proposes a novel variable-length beam element that takes into account the effect of beam spinning. This is the first such beam element of variable length based on the absolute nodal coordinate formulation. In addition to the position and slope vectors, the angles of rotation around the element axis of cross sections that contain two nodes
Lat. Am. j. solids struct.. Publicado em: 2017-08
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10. Crashworthiness Analysis of S-Shaped Structures Under Axial Impact Loading
Abstract To mitigate shock forces in collision events, thin-walled members are used as energy absorber. In this article, crashworthiness of single-cell and multi-cell S-shaped members with various cross-sections including triangular, square, hexagonal, decagon and circular were investigated under axial dynamic loading using finite element code LS-DYNA. Furth
Lat. Am. j. solids struct.. Publicado em: 2017-06
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11. Pharmacobotanical study of Hypericum thymopsis
ABSTRACT Hypericum thymopsis Boiss., Hypericaceae, is an endemic herb which generally grows at the calcareous steppe regions of Central Turkey. In flowering stage, the aerial parts of this species are used for wound-healing and sedation, and its infusions are used against stomach diseases and throat infections by local people. The aim of this study, to exami
Rev. bras. farmacogn.. Publicado em: 2017-04
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12. A New Configuration of Circular Stepped Tubes Reinforced with External Stiffeners to Improve Energy Absorption Characteristics Under Axial Impact
Abstract State-of-the art studies of impact crushing circular stepped tube (inversion tube) introduce various approaches to improve the energy absorption capacities. Adding external longitudinal stiffeners on the circular stepped tubes is a new approach that have a great effect and interest. In the current study, finite element analysis using (LS-DYNA/WORKBE
Lat. Am. j. solids struct.. Publicado em: 2017-02