Dynamic Mesh
Mostrando 1-12 de 40 artigos, teses e dissertações.
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1. Study of soils used with subgrade and sub-ballast in Brazilian railways
Abstract Brazil has an extremely limited railroad network compared to other developed and developing countries. There are projects to expand this mesh. Knowing that the cost of implementing a railroad is high, research for solutions that allow cost reduction is of great importance. But the parameters of the materials used in the subgrade and sub-ballast laye
REM - International Engineering Journal. Publicado em: 2022
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2. Numerical Simulation of a Pitching Airfoil Under Dynamic Stall of Low Reynolds Number Flow
ABSTRACT: In this research, viscous, unsteady and turbulent fluid flow is simulated numerically around a pitching NACA0012 airfoil in the dynamic stall area. The Navier-Stokes equations are discretized based on the finite volume method and are solved by the PIMPLE algorithm in the open source software, namely OpenFOAM. The SST k - ω model is used as the tur
J. Aerosp. Technol. Manag.. Publicado em: 14/11/2019
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3. WHOLE-BODY VIBRATION TRAINING PROTOCOLS IN OBESE INDIVIDUALS: A SYSTEMATIC REVIEW
RESUMO A obesidade é uma doença crônica degenerativa. Os aparelhos de vibração de corpo inteiro (VCI) permitem o controle da intensidade dos exercícios através das suas variáveis: frequência, amplitude e tempo de vibração, possibilitando intervenções nessas populações. O objetivo do presente estudo foi realizar uma revisão sobre as aplicaçõ
Rev Bras Med Esporte. Publicado em: 11/11/2019
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4. Numerical Study on Response Characteristics of Solid Rocket Pintle Motor
ABSTRACT: Pintle technology is currently a versatile technology used in a solid rocket motor (SRM) to control the desired thrust by changing the nozzle throat area, while effectively controlling the chamber pressure at the same time. The sudden movement of the pintle can induce rapid changes in the flow field and the occurrence of pressure oscillations insid
J. Aerosp. Technol. Manag.. Publicado em: 26/08/2019
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5. Primary renal angiosarcoma with extensive hemorrhage: CT and MRI findings
ABSTRACT Primary angiosarcomas of the kidney are very rare, but highly aggressive tumors showing poor prognosis. Patients frequently complain of flank pain, hematuria, or a palpable mass. We present a case of primary renal angiosarcoma occurring in a 61-year-old man. CT images depicted a huge exophytic mass (16 cm in diameter) in the right kidney, exhibiting
Int. braz j urol.. Publicado em: 27/05/2019
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6. A Numerical Study on Smart Material Selection for Flapped and Twisted Morphing Wing Configurations
ABSTRACT: The developments of innovative adaptive structures on Unmanned Aerial Vehicles (UAVs), such as morphing wings, can potentially reduce system complexities by eliminating control surfaces and their auxiliary equipment. This technology has the potential of allowing a UAV to adapt to different mission requirements or to execute a particular mission mor
J. Aerosp. Technol. Manag.. Publicado em: 2014-09
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7. Numerical dynamic analysis of stiffened plates under blast loading
Using the general purpose finite element package Abaqus, an investigation has been carried out to examine the dynamic response of steel stiffened plates subjected to uniform blast loading. The main objective of this study is to determine the dynamic response of the stiffened plates considering the effect of stiffener configurations. Several parameters, such
Lat. Am. j. solids struct.. Publicado em: 2014-03
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8. Fatigue analysis and life prediction of composite highway bridge decks under traffic loading
Steel and composite (steel-concrete) highway bridges are currently subjected to dynamic actions of variable magnitude due to convoy of vehicles crossing on the deck pavement. These dynamic actions can generate the nucleation of fractures or even their propagation on the bridge deck structure. Proper consideration of all of the aspects mentioned pointed our t
Lat. Am. j. solids struct.. Publicado em: 2013-05
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9. Modelagem do comportamento estrutural estático e dinâmico de lajes nervuradas de concreto armado. / Modeling the static and dinamic structural behavior of reinforced concret slabs.
Several researchers have studied the use of reinforced concrete ribbed slabs in civil engineering structural systems that can be viable when the technical and economical point of view is considered. For this reason, a lot of papers were published in the last years based on the experimental and numerical analysis of this slab type. In this context, several sl
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/01/2012
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10. Otimização e dinâmica dos fluidos computacional aplicadas a turbinas eólicas
The present work consists in the application of optimization methods and computational fluid dynamics to wind turbines. The massive growth in renewable energies demands more powerful turbines and more accuracy in their design and analysis. This work has three objectives: optimization of an airfoil for wind turbines, simulation of a wind turbine airfoil in de
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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11. Controle PID e Preditivo â Aspectos TeÃricos e de ImplementaÃÃo PrÃtica / Control PID AND Predictive - Theoretical Aspects and Practical Implemantation
Nowadays, we observe the exponential increasing of demand for performance optimization in all areas of modern life. This search for better performances is also occurring in all industry sectors, either factory or energy activities. This best performances reflects an increase is all levels and achieve enormously the process control systems. With more strict p
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/09/2011
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12. PARALLEL TOPOLOGICAL SUPPORT FOR FINITE ELEMENT MESHES IN DYNAMIC FRACTURE AND FRAGMENTATION ANALYSES / SUPORTE TOPOLÓGICO EM PARALELO PARA MALHAS DE ELEMENTOS FINITOS EM ANÁLISES DINÂMICAS DE FRATURA E FRAGMENTAÇÃO
Fracture propagation and fragmentation phenomena in solids can be described by Cohesive Zone Models and simulated with the Finite Element Method. Among the computational approaches of recent interest for fracture representation in finite element meshes are those based on cohesive elements. In those approaches, fracture behavior is represented by cohesive ele
Publicado em: 2011