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Amanda Mattos (ESSS), Karoline Ropelato (ESSS), Ricardo Medronho (Universidade Federal do Rio de Janeiro)
Apr 2012 The present work studied the behavior of ejectors which are widely used in industry as substitutes for mechanical compressors or even for vacuum producers in distillation towers. A preliminary study using CFD was validated against experimental data and the effects of geometry on ejector’s performance were investigated. read on Optimization of a Supersonic Ejector Coupled with a CFD Analysis
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Sara Salahi, Graduate School New Brunswick Rutgers, The State University of New Jersey
Jan 2012 The importance of design of an optimized and efficient combustion or gasification system, the complexity of such an optimization problem with conflicting objectives and the inadequacy of traditional optimization methods in searching the entire design space and their intuitive and random nature, presents the significant importance of proposing an automated multi-objective optimization method in the field of combustion and gasification design. read on Automated Process and Geometry Design Optimization of a Coal Combustion Reactor
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P. Cavaliere (Department of innovation engineering, University of Salento)
Mar 2012 Steel fusion welding is characterized by phase transformations influencing the final mechanical properties. Such properties and modifications are strongly related to welding parameters such as speed, current, voltage and heat input. In the present paper an optimization analysis has been performed with modeFRONTIER in order to identify the best welding condition for each kind of steel taking as final goal the fatigue and impact strength of the joints. read on Multi-objective optimization of steel fusion welding
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Le journal du PEP - Centre Technique de la Plasturgie
Dec 2011 The case study presents a multidisciplinary optimization related to the thermoplastic industry. At the PEP technical center for innovation on thermoplastic injection modeFRONTIER was used to combine the optimal choice of the material compositions and volumes. The innovative power of the optimization methodology lies in the possibility to identify solutions which have not even been considered at the first steps of the design process. read on Multidisciplinary Optimization at PolEPlasturgie
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H.E. Radhi, S.M. Barrans (University of Huddersfield)
Oct 2011 The objective of this paper was to perform a comparative study among multiobjective optimization methods on practical problem by using modeFRONTIER optimization software, to determine the efficiency of each method. read on Comparison between Multiobjective Population-Based Algorithms
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Patrick C. Lee, Laura Dietsche, Joseph Dooley, (The Dow Chemical Company), Sumeet Parashar (ESTECO North America)
Sep 2011 This study shows how the flow uniformity from a film die can be improved by modifying the geometry of the die using a three dimensional finite element optimization technique. In this study, various optimization strategies were used to optimize the geometry. read on Improving Film Die Flow Uniformity Using Optimization Methods
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Vincent Gassmann, Dominique Knittel (University of Strasbourg, France)
Sep 2011 Flexible materials such as textiles, papers, polymers and metals are transported on rollers during their processing. Maintaining web tension in the processing line under an expected web speed is a key factor in achieving good product quality. The emphasis of this paper is on the design of linear parameter varying PI controllers to increase closed loop system robustness. read on Robust PI-LPV Tension Control with Elasticity Observer for Roll-to-Roll Systems
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Ida Haglund, Anna Håkansson (School of Engineering, Jönköping - Sweden)
Aug 2011 This thesis describes how a design optimization of a boom structure for drill rigs can be set up and performed where the range is increased and the weight reduced. A program that calculates the coverage area based on the boom angles and dimensions is connected with a finite element analysis of a boom model that is auto-generated by a macro, using modeFRONTIER read on Design Optimization of a Boom for Drill Rigs
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Cavaliere, P; Perrone, A; Tafuro, P; Primavera, V
Aug 2011 The sintering operation in integrated steelworks is one of the main sources for the production of polychlorinated dibenzo-p-dioxins, polychlorinated-dibenzo-furans, NOx and SOx. Using the optimisation software modeFRONTIER (ESTECO), a virtual surface that can reproduce the actual process of sintering was created. read on Reducing emissions of PCDD/F in sintering plant
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Edgard Espinosa, Florida International University
Jul 2011 The purpose of this thesis was to identify the optimal design parameters for a jet nozzle which obtains a local maximum shear stress while maximizing the average shear stress on the floor of a fluid filled system. This research examined how geometric parameters of a jet nozzle, such as the nozzle's angle, height, and orifice, influence the shear stress created on the bottom surface of a tank. read on Design Optimization of Submerged Jet Nozzles for Enhanced Mixing
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Fanjuan Meng, Carl Labergere, and Pascal Lafon (University of Technology of Troyes, France)
May 2011 In metal forming process, the forging die design is the most important step for products quality control. To develop this metal forming process optimization system several numerical tools are required: geometric modelling (CATIA V5TM), FEM analysis (ABAQUS), work-flow control and optimization computation (modeFRONTIER). read on Initial billet and forging dies shape optimization
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Jean-David Caprace, Philippe Rigo (University of Liège - Belgium), Clarice Trevisani Da Silva, Floriano Carlos Martins Pires (University Federal of Rio de Janeiro- Brazil)
May 2011 The block erection scheduling of a gantry crane has thus far been manually performed by a manager of a shipyard. To improve the overall process, block erection discrete event
simulations have been developed in this study by using techniques of optimization, using modeFRONTIER. read on Optimisation of Ship Block Erection Process
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Pankaj Rajak, Baidurya Bhattachary, Nirupam Chakraborti (Indian Institute of Technology, Kharagpur, India), Ujjal Tewary and Sumitesh Das (TATA Steel, Jamshedpur, India)
Apr 2011 Various interfaces in Zn coated steel are examined for their stability on the basis of two conflicting requirements of minimum deformation at a maximum absorption of shear energy. Simultaneous optimization of deformation and energy absorption is conducted with a Predator–prey Genetic Algorithm and the resulting Pareto frontiers are analyzed and discussed. read on Phases in Zn-coated Fe analyzed using modeFRONTIER
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HBM nCode is a powerful tool used for fatigue and durability analysis, and this presentation illustrates some integration cases with modeFRONTIER, for multi-objective optimisation design. The first case is relative to the Robust Design, or Design under Uncertainties, of an aluminium carter. The second application is relative to the Multi-Objective Design Optimization of a Connecting Rod. read on Design Optimization and Robust Design for Fatigue
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David Taylor, Andrew Kelly (Engineering School, Trinity College, Dublin - Ireland), Matteo Tosoa, Luca Susmel (Department of Engineering, University of Ferrara - Italy)
Dec 2010 Geometrical features such as notches and corners give rise to stress concentrations. In industrial components these features are often designed with a constant radius. modeFrontier has been used to carry out a more systematic search of possible variable-radius designs using multiple finite element models. read on Two new methods for reducing stress concentration
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Cem C. Tutum, Henrik B. Schmidt, Jesper H. Hattel (Technical University of Denmark)
Apr 2008 The numerical optimization problem of welding process parameters is implemented in modeFRONTIER and solved using the Multi-Objective Genetic Algorithm (MOGA-II). In this case, numerical optimization, i.e. tool rotation speed and traverse speed, aiming minimization of the two conflicting objectives, i.e. the residual stresses and welding time, subjected to process-specific thermal constraints in friction stir welding, is investigated. read on Optimization of the Process Parameters in Friction Stir Welding
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Federico Urban, Carlo Poloni
Gas assisted injection molding is a processing technique used to produce hollow sections in plastic parts. This is achieved by injecting a gas into a tool cavity partially filled with resin, while the resin injection continues to prevent a hesitation of the flow front. After the resin injection is completed, the gas injection continues, forming a gas bubble that keeps the resin flow front moving until the resin skin reaches the end of the mold. read on Gas Assisted Injection Molding
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Bogdan Cranganu-Cretu, Jasmin Smajic (ABB Schweiz AG)
Nov 2008 Simulation of multi-physics phenomena in power devices is becoming crucial for power industry. Industry demands for energy efficiency and cost savings make optimization a logical next step after field analysis. Challenges of numerical technologies from this industrial perspective are presented hereafter. read on “New” opportunities in an “old” industry: Power Product
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M. Spagnol (University of Trieste)
May 2011 Nella loro costruzione base, le molle ad aria non sono altro che involucri in gomma contenenti al loro interno aria compressa, che si comportano appunto come molle e presentano anche uno smorzamento. Per poter caratterizzare sperimentalmente la molla ad aria, oltre che testare differenti strategie di isolamento dalle vibrazioni e leggi di controllo, è stato costruito un’apparecchiatura di prova ad un grado di libertà. read on Applicazione air-spring modeFRONTIER (in Italian)
Esteco
