Nowadays the dimension of a reservoir should consider the determination of the minimum capacity that the reservoir has to possess, necessary to regularize the yield based on the
demand. One of the main parameters that characterize a dam is its height that, inside of an economical analysis, influences the cost of the reservoir water and according to an
analysis of hidrological efficiency, influences the regularized. The present work proposes a methodology for the previous dimension of a reservoir, that uses numeric techniques of
optimization, for determination of the height of a dam, with the objective of minimizing the cost of the water. This procedure was applied to the Rosário reservoir built by PROURB (Project of Urban Development and Administration of the water resources of the State of Ceará). The height found for the reservoir was of 20.70 m, with yield of 29.73 hm3/ano
resulting in a cost of the water of R13.97/1000m3.Atualmente,odimensionamentodeumabarragempartedadeterminac\c​a~odacapacidademıˊnimaqueoreservatoˊriotemquepossuir,necessaˊriapararegularizarumaquantidadequeeˊestipuladacombasenademandanecessaˊriapararegia~o,fixando,posteriormente,suaaltura,independentedocustodeconstruc\c​a~o.Umdospara^metrosprincipaisquecaracterizamumabarragemeˊasuaaltura,que,dentrodeumaanaˊliseecono^mica,influencianocustodoreservatoˊrioedentrodeumaanaˊlisedeeficie^nciahıˊdrica,influencianavaza~oregularizada.Opresentetrabalhopropo~eumametodologiaparaopreˊ−dimensionamentodeumabarragem,queutilizateˊcnicasnumeˊricasdeotimizac\c​a~oparadeterminac\c​a~odasuaaltura,tendo,comoobjetivo,minimizarocustodaaˊgua.EsteprocedimentofoiaplicadonabarragemdoRosaˊrio,reservatoˊrioconstruıˊdopeloPROURB(ProjetodeDesenvolvimentoUrbanoeGesta~odosRecursosHıˊdricosdoEstadodoCearaˊ).Encontrou−seumaalturaoˊtimaglobalparaala^minad’aˊguade20,70m,comumavaza~oderegularizac\c​a~ode29,73hm3/anoresultandonumcustodaaˊguadeR 13,97/1000m3
Abstract The use of thin-walled composite beams in Engineering has attracted great interest in recent years. Composite beams and other structural elements tend to have thin walls due to the high strength of the material. Other important aspect is that, even without reaching large strains and without overcoming the elastic limit of the material, such as beams present geometric nonlinear behavior due to their high slenderness, leading to large displacements and rotations. In this paper, a three-dimensional frame finite element for geometric nonlinear analysis of thin-walled laminated composite beams is presented. The finite element uses the Total Lagrangian formulation in order to allow the treatment of large displacements, but with moderated rotations. The constitutive matrix of the laminated beams is evaluated through a suitable thin-walled beam theory. In this theory, the effects of the couplings for several layups are considered, but the effects of the warping and transverse shear are neglected. Comparisons with numerical experiments demonstrate the very good accuracy of the proposed finite element
Nowadays the dimension of a reservoir should consider the determination of the minimum capacity that the reservoir has to possess, necessary to regularize the yield based on the
demand. One of the main parameters that characterize a dam is its height that, inside of an economical analysis, influences the cost of the reservoir water and according to an
analysis of hidrological efficiency, influences the regularized. The present work proposes a methodology for the previous dimension of a reservoir, that uses numeric techniques of
optimization, for determination of the height of a dam, with the objective of minimizing the cost of the water. This procedure was applied to the Rosário reservoir built by PROURB (Project of Urban Development and Administration of the water resources of the State of Ceará). The height found for the reservoir was of 20.70 m, with yield of 29.73 hm3/ano
resulting in a cost of the water of R13.97/1000m3.Atualmente,odimensionamentodeumabarragempartedadeterminac\c​a~odacapacidademıˊnimaqueoreservatoˊriotemquepossuir,necessaˊriapararegularizarumaquantidadequeeˊestipuladacombasenademandanecessaˊriapararegia~o,fixando,posteriormente,suaaltura,independentedocustodeconstruc\c​a~o.Umdospara^metrosprincipaisquecaracterizamumabarragemeˊasuaaltura,que,dentrodeumaanaˊliseecono^mica,influencianocustodoreservatoˊrioedentrodeumaanaˊlisedeeficie^nciahıˊdrica,influencianavaza~oregularizada.Opresentetrabalhopropo~eumametodologiaparaopreˊ−dimensionamentodeumabarragem,queutilizateˊcnicasnumeˊricasdeotimizac\c​a~oparadeterminac\c​a~odasuaaltura,tendo,comoobjetivo,minimizarocustodaaˊgua.EsteprocedimentofoiaplicadonabarragemdoRosaˊrio,reservatoˊrioconstruıˊdopeloPROURB(ProjetodeDesenvolvimentoUrbanoeGesta~odosRecursosHıˊdricosdoEstadodoCearaˊ).Encontrou−seumaalturaoˊtimaglobalparaala^minad’aˊguade20,70m,comumavaza~oderegularizac\c​a~ode29,73hm3/anoresultandonumcustodaaˊguadeR 13,97/1000m3
This paper presents BIOS (acronym for Biologically Inspired Optimization System), an object-oriented framework written in C++, aimed at heuristic optimization with a focus on Surrogate-Based Optimization (SBO) and structural problems. The use of SBO to deal with structural optimization has grown considerably in recent years due to the outstanding gain in efficiency, often with little loss in accuracy. This is especially promising when adaptive sampling techniques are used. However, many issues are yet to be addressed before SBO can be employed reliably in most optimization problems. In that sense, continuous experimentation, testing and comparison are needed, which can be more easily carried out in an existing framework. The architecture is designed to implement conventional nature inspired algorithms and Sequential Approximated Optimization (SAO). The system aims to be efficient, easy to use and extensible. The efficiency and accuracy of the system are assessed on a set of benchmarks, and on the optimization of functionally graded structures. Excellent results are obtained.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Applied Mechanic