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Mostrando 1-12 de 163 artigos, teses e dissertações.
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1. Structural reliability model considering mixed probabilistic and interval variables
Abstract Traditional probability-based structural reliability analysis method can only consider random uncertainties described by random distribution functions, which required sufficient experimental samples. On comparison, interval uncertainties can be more appropriate when lacking information. In realistic situations, several structural reliability models
Lat. Am. j. solids struct.. Publicado em: 17/01/2020
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2. Analysis of a car door subjected to side pole impact
Abstract The results of a study on the response of a side impact beam located in a car door to impact loading is presented. The side impact beam is situated in both the front and rear side doors of a vehicle between the inner and outer shells to minimise intrusion into the passenger compartment during a collision whilst absorbing as much impact energy as pos
Lat. Am. j. solids struct.. Publicado em: 30/09/2019
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3. Optimization of reinforced concrete beams using Solver tool
Resumo Com os avanços nos estudos de análise estrutural, técnicas de otimização passaram a fazer parte do dimensionamento das estruturas de concreto armado. Por meio de tais técnicas, é possível conceber estruturas com seções otimizadas. Assim, o presente estudo tem por objetivo implementar técnicas de otimização, utilizando a ferramenta Solver,
Rev. IBRACON Estrut. Mater.. Publicado em: 23/09/2019
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4. Modelo matemático para planejamento da distribuição de locomotivas para atendimento à demanda de formação de trens
Resumo O custo operacional para distribuir locomotivas ao longo dos pátios ferroviários com o objetivo de atender às demandas de formação de trens é muito alto. assim, este artigo propõe um modelo matemático para planejamento da distribuição de locomotivas que visa atender às requisições dos pátios, Locomotive Scheduling Problem (LSP), com o in
Gest. Prod.. Publicado em: 09/05/2019
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5. 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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6. Investigating the Effect of Delamination Size, Stacking Sequences and Boundary Conditions on The Vibration Properties of Carbon Fiber Reinforced Polymer Composite
Abstract Composite structures are extensively used in various fields ranging from, but not limited to marine, aerospace, automotive, agricultural and industrial equipment due to their unique and excellent properties like weight associated with density. On an increase in their applications, it also requires special attention to manufacture and process the com
Mat. Res.. Publicado em: 07/01/2019
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7. Numerical Studies of Penetration in Light Armor, Concrete and Brick-Wall Targets
ABSTRACT The accurate numerical simulation of projectile penetration process is a complex challenge. Experimental investigation of these time-dependent non-linear events is expensive and time-consuming. In this paper, 3-D numerical simulations are carried out to estimate the penetration performance of designed penetrators against the double and triple brick-
Matéria (Rio J.). Publicado em: 18/10/2018
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8. Recommended Finite Element Formulations for the Analysis of Offshore Blast Walls in an Explosion
Abstract This study suggests relevant finite element (FE) formulations for the structural analysis of offshore blast walls subjected to blast loadings due to hydrocarbon explosions. The present blast wall model adopted from HSE (2003) consists of a corrugated panel and supporting members, and was modelled with shell, thick-shell, and solid element combinatio
Lat. Am. j. solids struct.. Publicado em: 08/10/2018
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9. Study of friction stir spot welding on AA6063 aluminium alloy used in the ship building industry
ABSTRACT Friction stir spot welding (FSSW) is a novel process of metal joining. In the present work, the authors analysed the possibility of using this process to solve current problems in shipbuilding industry regarding small vessels by replacing the current arc welding techniques with the aforementioned process. Numerical simulation was carried out by the
Matéria (Rio J.). Publicado em: 19/07/2018
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10. Run time Assessment for Gas Turbine Performance Simulation
ABSTRACT: This article describes the run time characteristics of a gas turbine performance simulation using different solvers and components off-design performance database formats. Two different nonlinear systems of equation solvers, Newton-Raphson's and Broyden's, and two different formats of compressor and turbine off-design performance database (maps), t
J. Aerosp. Technol. Manag.. Publicado em: 15/03/2018
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11. Otimização das condições de torração de café arábica cultivado no cerrado
Resumo O objetivo deste trabalho foi otimizar, por meio do planejamento DCCR (Delineamento Composto Central Rotacional), as condições tempo e temperatura de torração para três genótipos Coffea arabica L. cultivados no Cerrado, sob condições de estresse hídrico controlado, para manter alto teor de sólidos solúveis e uma coloração de torração ac
Braz. J. Food Technol.. Publicado em: 05/02/2018
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12. An integrated optimization and simulation model for refinery planning including external loads and product evaluation
Abstract Because of its potential benefits, petroleum refineries are increasingly concerned about their planning operations. Although some refinery models for production planning were proposed, they are quite limited in their usefulness. This study describes an integrated approach involving nonlinear optimization and simulation of refinery units in order to
Braz. J. Chem. Eng.. Publicado em: 2018-01