Locking Beam
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. A New Triangular Hybrid Displacement Function Element for Static and Free Vibration Analyses of Mindlin-Reissner Plate
Abstract A new 3-node triangular hybrid displacement function Mindlin-Reissner plate element is developed. Firstly, the modified variational functional of complementary energy for Mindlin-Reissner plate, which is eventually expressed by a so-called displacement function F, is proposed. Secondly, the locking-free formulae of Timoshenko’s beam theory are cho
Lat. Am. j. solids struct.. Publicado em: 2017-06
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2. Flutter Instability of Timoshenko Cantilever Beam Carrying Concentrated Mass on Various Locations
Abstract This paper presents effects of shear deformation on flutter instability of cantilever beam subject to a concentrated follower force. The discrete form of equation of motion is formulated based on the Lagrange. In the presented formulation, the beam is modeled using Timoshenko beam theory, and constant shear distribution through the thickness of the
Lat. Am. j. solids struct.. Publicado em: 2016-12
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3. An Explicit Stiffness Matrix for Parabolic Beam Element
Abstract This study is devoted to strain-based formulation for a curved beam. Arches with parabolic geometry, which have a variety of applications, belong to this structural type. Dependency of the curvature radius to the arch length creates some complexities in the solution process. To analyze these complex structures, a two-node beam with six degrees of fr
Lat. Am. j. solids struct.. Publicado em: 2016-09
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4. An efficient coupled polynomial interpolation scheme to eliminate material-locking in the Euler-Bernoulli piezoelectric beam finite element
The convergence characteristic of the conventional two-noded Euler-Bernoulli piezoelectric beam finite element depends on the configuration of the beam cross-section. The element shows slower convergence for the asymmetric material distribution in the beam cross-section due to 'material-locking' caused by extension-bending coupling. Hence, the use of convent
Lat. Am. j. solids struct.. Publicado em: 2015-01
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5. Finite element modeling for buckling analysis of hybrid piezoelectric beam under electromechanical loads
A one-dimensional finite element model for buckling analysis of hybrid piezoelectric beams under electromechanical load is presented in this work. The coupled zigzag theory is used for making the model. The inplane displacement is approximated as a combination of a global third order variation across the thickness with an additional layer wise linear variati
Lat. Am. j. solids struct.. Publicado em: 2014-10
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6. Active vibration control of a piezoelectric beam using PID controller: Experimental study
Vibration suppression of smart beams using the piezoelectric patch structure is presented in the present work. The smart system consists of a beam as the host structure and piezoceramic patches as the actuation and sensing elements. An experimental set-up has been developed to obtain the active vibration suppression of smart beam. The set-up consists of a sm
Lat. Am. j. solids struct.. Publicado em: 2012-12
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7. Two efficient hybrid-trefftz elements for plate bending analysis
This study is devoted to the analysis of the Reissner-Mindlin plate bending. In this paper, the hybrid-Trefftz strategy will be utilized. Two novel and efficient elements are formulated in details. They are a Triangular element (THT) and a quadrilateral element (QHT), which have 9 and 12 degrees of freedom, respectively. In this approach, two independent dis
Latin American Journal of Solids and Structures. Publicado em: 2012
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8. Analysis of two pile caps reinforced concrete with embedded socket by presence of locking beam / Análise de blocos de concreto armado sobre duas estacas com cálice totalmente embutido mediante presença de viga de travamento
Esta pesquisa estuda o comportamento de blocos de concreto armado sobre duas estacas com cálice totalmente embutido, utilizado na ligação pilar-fundação de estruturas de concreto pré-moldado. Particularmente, foi avaliado o efeito que a viga de travamento provoca no bloco quando apoiada nas paredes laterais do cálice. Foi desenvolvida análise numéri
Publicado em: 2009
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9. Magnetic nanodots from atomic Fe: Can it be done?
Laser focusing of Fe atoms offers the possibility of creating separate magnetic structures on a scale of 10 nm with exact periodicity. This can be done by using the parabolic minima of the potential generated by a standing light wave as focusing lenses. To achieve the desired 10-nm resolution, we need to suppress chromatic and spherical aberrations, as well
The National Academy of Sciences.