Numerical Simulation
Mostrando 37-48 de 813 artigos, teses e dissertações.
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37. Study of epoxy composites and sisal fibers as reinforcement of reinforced concrete structure
Resumo A aplicação de reforço estrutural tem apresentado crescimento significativo nos dias atuais. O desenvolvimento de novos materiais para tal finalidade tem despertado o interesse de muitos pesquisadores. O presente trabalho teve por objetivo avaliar a viabilidade técnica da produção e aplicação de polímeros reforçados com fibras vegetais (PRFV
Rev. IBRACON Estrut. Mater.. Publicado em: 20/05/2019
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38. Sensitivity Analysis of Flexible Rotor Subjected to Interval Uncertainties
Abstract This paper aims at analyzing the sensitivity of the structural response of flexible rotors subjected to uncertain interval parameters. The interval approach encompasses both an uncertainty and sensitivity analyses. The uncertainty analysis consists in computing the interval uncertain structural responses by using the global optimization method. The
Lat. Am. j. solids struct.. Publicado em: 13/05/2019
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39. Study on elastoplastic coupling mechanics model of the milled mixture of sugar cane
Abstract At present, the phenomenon of elastoplastic coupling isn’t considered in establishing the mechanics model of the milled mixture of sugar cane. In order to describe elastoplastic coupling and yield characteristics, based on uniaxial confined compression tests and direct shear tests, the evolution of the elastic parameters of the solid fiber with v
Food Sci. Technol. Publicado em: 11/04/2019
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40. Three-dimensional numerical simulation of flow in vertical slot fishways: validation of the model and characterization of the flow
RESUMO As escadas para peixes com ranhuras verticais permitem que ocorra a dissipação da energia do escoamento em função da forma da bacia, dos defletores, da declividade longitudinal e da largura da ranhura vertical. Estas estruturas devem apresentar padrões médios e turbulentos do escoamento compatíveis com os peixes que irão transpô-la. Tipicame
RBRH. Publicado em: 11/04/2019
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41. Two-Dimensional Numerical Model of the Fracture Process in Steel Fibre Reinforced Concrete with the Continuum Strong Discontinuity Approach and Functional Data Analysis
Abstract This paper presents the formulation of a two-dimensional numeri-cal model able to describe the fracture process in structural mem-bers of steel fibre reinforced concrete (SFRC) from the volume ratio of the fibres and the mechanical properties of the compo-nents: a concrete matrix and a set of steel fibres with a random orientation. The relationship
Lat. Am. j. solids struct.. Publicado em: 08/04/2019
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42. Reduction of epistemic uncertainty of a crash box model - experimental and numerical investigations
Abstract The high prediction accuracy of FEM calculations is an important prerequisite for their growing use in the field of crash load cases for vehicle body design. Although the simulation accuracy of crash calculations for steel structures already is at a high standard, continuous improvements and a further development of the simulation models are crucial
Lat. Am. j. solids struct.. Publicado em: 21/03/2019
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43. Coupled numerical simulation of a tailings deposit by FEM
Abstract Researchers have found that a valuable alternative for predicting the mechanical behavior of landfill construction is numerical simulation based on the finite element method. The results of such a numerical simulation for a sandy tailings deposit from the iron mining coupling flow and deformation are presented herein. This study investigates the inf
REM, Int. Eng. J.. Publicado em: 2019-03
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44. Highly birefringent do-octagonal photonic crystal fibers with ultra flattened zero dispersion for supercontinuum generation
Abstract Photonic crystal fiber (PCF) structures with do-octagonal geometry have been studied. These do-octagonal PCF structure have smaller circular holes arranged in rhombic fashion at its centre. Moreover, these small holes are doped with materials like butanol, ethanol, methanol and propanol. Do-octagonal PCF structures doped with methanol and air filled
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2019-03
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45. Binary programming for the simulation of crop rotation and animal transit in an integrated crop-livestock system
RESUMO O objetivo é desenvolver e implementar um modelo de programação linear (PL) que forneça como resultado um cronograma com a melhor seleção de cultivos em cada gleba por período e com o maior ganho de peso de cada animal. O modelo de programação linear foi desenvolvido a partir do trabalho empírico realizado por Alvarenga e Gontijo Neto (2008)
Rev. Ciênc. Agron.. Publicado em: 2019-03
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46. MODELING SOIL WATER REDISTRIBUTION UNDER SURFACE DRIP IRRIGATION
ABSTRACT The main objective of this study was to develop a numerical model to simulate water distribution, and the shape of the wetted soil volume, resulting from a point source irrigation at the ground surface (dripper), given soil hydraulic properties and irrigation system parameters. The mathematical model was developed in Fortran 90 at the Department of
Eng. Agríc.. Publicado em: 2019-02
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47. A Model Updating Method for Plate Elements Using Particle Swarm Optimization (PSO), Modeling the Boundary Flexibility, Including Uncertainties on Material and Dimensional Properties
Abstract It is a well-known fact that, in a real engineering situation, fixtures are not ideally stiff, so numerical simulations using them are unlikely to present results that are consistent with the experimental ones. The present paper intends to describe a model updating methodology inserting translational and rotational springs in order to better represe
Lat. Am. j. solids struct.. Publicado em: 22/10/2018
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48. Numerical simulation of bolted connections
Abstract This article presents the modeling of a complete bolted connection based on a model with one bolt connecting two or three plates. Initially, the behavior of this model with one bolt is analyzed by comparing it with existing bibliography for 3 different types of applied load: tension, shear and a combination of these two. This model includes all nece
Lat. Am. j. solids struct.. Publicado em: 22/10/2018