Search Results - "Martins, A. R."

Extensions to the design structure matrix for the description of multidisciplinary design, analysis, and optimization processes by Lambe, Andrew B., Martins, Joaquim R. R. A.

“…While numerous architectures exist for solving multidisciplinary design optimization (MDO) problems, there is currently no standard way of describing these…”
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pyOpt: a Python-based object-oriented framework for nonlinear constrained optimization by Perez, Ruben E., Jansen, Peter W., Martins, Joaquim R. R. A.

“…We present pyOpt, an object-oriented framework for formulating and solving nonlinear constrained optimization problems in an efficient, reusable and portable…”
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Open-source coupled aerostructural optimization using Python by Jasa, John P., Hwang, John T., Martins, Joaquim R. R. A.

“…To teach multidisciplinary design optimization (MDO) to students effectively, it is useful to have accessible software that runs quickly, allowing hands-on…”
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OpenMDAO: an open-source framework for multidisciplinary design, analysis, and optimization by Gray, Justin S., Hwang, John T., Martins, Joaquim R. R. A., Moore, Kenneth T., Naylor, Bret A.

“…Multidisciplinary design optimization (MDO) is concerned with solving design problems involving coupled numerical models of complex engineering systems. While…”
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Understanding the Formation of Deep Eutectic Solvents: Betaine as a Universal Hydrogen Bond Acceptor by Abranches, Dinis O., Silva, Liliana P., Martins, Mónia A. R., Pinho, Simão P., Coutinho, João A. P.

“…The mechanism of formation of betaine‐based deep eutectic solvents (DES) is presented for the first time. Due to its polarity unbalance, it was found that…”
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An evaluation of constraint aggregation strategies for wing box mass minimization by Lambe, Andrew B., Kennedy, Graeme J., Martins, Joaquim R. R. A.

“…Constraint aggregation makes it feasible to solve large-scale stress-constrained mass minimization problems efficiently using gradient-based optimization where…”
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Tunable Hydrophobic Eutectic Solvents Based on Terpenes and Monocarboxylic Acids by Martins, Mónia A. R, Crespo, Emanuel A, Pontes, Paula V. A, Silva, Liliana P, Bülow, Mark, Maximo, Guilherme J, Batista, Eduardo A. C, Held, Christoph, Pinho, Simão P, Coutinho, João A. P

“…Recently, some works claim that hydrophobic deep eutectic solvents could be prepared based on menthol and monocarboxylic acids. Despite of some promising…”
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Minimum lap time trajectory optimisation of performance vehicles with four-wheel drive and active aerodynamic control by de Buck, Pieter, Martins, Joaquim R. R. A

“…As racing vehicles become more complex, optimising the interaction between subsystems becomes critical for racing performance. In this work, we incorporate two…”
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A parallel aerostructural optimization framework for aircraft design studies by Kennedy, Graeme J., Martins, Joaquim R. R. A.

“…Preliminary aircraft design studies use structural weight models that are calibrated with data from existing aircraft. Computing weights with these models is a…”
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Stress-constrained topology optimization with design-dependent loading by Lee, Edmund, James, Kai A., Martins, Joaquim R. R. A.

“…The purpose of this paper is to apply stress constraints to structural topology optimization problems with design-dependent loading. A comparison of…”
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CFD-based design optimization of ducted hydrokinetic turbines by Park, Jeongbin, Knight, Bradford G., Liao, Yingqian, Mangano, Marco, Pacini, Bernardo, Maki, Kevin J., Martins, Joaquim R. R. A., Sun, Jing, Pan, Yulin

“…Hydrokinetic turbines extract kinetic energy from moving water to generate renewable electricity, thus contributing to sustainable energy production and…”
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Liquefying Compounds by Forming Deep Eutectic Solvents: A Case Study for Organic Acids and Alcohols by Abranches, Dinis O, Martins, Renato O, Silva, Liliana P, Martins, Mónia A. R, Pinho, Simão P, Coutinho, João A. P

“…The criterion to distinguish a simple eutectic mixture from a deep eutectic solvent (DES) lies in the deviations to thermodynamic ideality presented by the…”
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The Role of Polyfunctionality in the Formation of [Ch]Cl-Carboxylic Acid-Based Deep Eutectic Solvents by Crespo, Emanuel A, Silva, Liliana P, Martins, Mónia A. R, Bülow, Mark, Ferreira, Olga, Sadowski, Gabriele, Held, Christoph, Pinho, Simão P, Coutinho, João A. P

“…Aiming at providing an extensive characterization of the solid–liquid equilibria (SLE) of deep eutectic solvents (DESs), the phase diagrams of nine eutectic…”
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Characterization and Modeling of the Liquid Phase of Deep Eutectic Solvents Based on Fatty Acids/Alcohols and Choline Chloride by Crespo, Emanuel A, Silva, Liliana P, Martins, Mónia A. R, Fernandez, Luis, Ortega, Juan, Ferreira, Olga, Sadowski, Gabrielle, Held, Christoph, Pinho, Simão P, Coutinho, João A. P

“…The solid–liquid equilibria phase diagrams of eight eutectic systems formed by choline chloride and fatty acids, or fatty alcohols, were measured to…”
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RANS-Based Aerodynamic Shape Optimization of a Wing with a Propeller in Front of the Wingtip by Chauhan, Shamsheer S., Martins, Joaquim R. R. A.

“…Accounting for propeller–wing interaction allows for the design of more efficient propeller aircraft through strategic propulsion integration. In this paper,…”
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A novel approach to discrete truss design problems using mixed integer neighborhood search by Shahabsafa, Mohammad, Mohammad-Nezhad, Ali, Terlaky, Tamás, Zuluaga, Luis, He, Sicheng, Hwang, John T., Martins, Joaquim R. R. A.

“…Discrete truss sizing problems are very challenging to solve due to their combinatorial, nonlinear, non-convex nature. Consequently, truss sizing problems…”
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Human Adipose Stem Cells Cell Sheet Constructs Impact Epidermal Morphogenesis in Full-Thickness Excisional Wounds by Cerqueira, M. T, Pirraco, R. P, Santos, T. C, Rodrigues, D. B, Frias, A. M, Martins, A. R, Reis, R. L, Marques, A. P

“…Among the wide range of strategies to target skin repair/regeneration, tissue engineering (TE) with stem cells at the forefront, remains as the most promising…”
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Multipoint high-fidelity CFD-based aerodynamic shape optimization of a 10 MW wind turbine by Aa Madsen, Mads H, Zahle, Frederik, Sørensen, Niels N, Joaquim R R A Martins

“…The wind energy industry relies heavily on computational fluid dynamics (CFD) to analyze new turbine designs. To utilize CFD earlier in the design process,…”
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The Role of the Anion in Imidazolium-Based Ionic Liquids for Fuel and Terpenes Processing by Zambom, Aline, Vilas-Boas, Sérgio M, Silva, Liliana P, Martins, Mónia A R, Ferreira, Olga, Pinho, Simão P

“…The potentialities of methylimidazolium-based ionic liquids (ILs) as solvents were evaluated for some relevant separation problems-terpene fractionation and…”
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An automated selection algorithm for nonlinear solvers in MDO by Chauhan, Shamsheer S., Hwang, John T., Martins, Joaquim R. R. A.

“…There are two major types of approaches that are used for the multidisciplinary analysis (MDA) of coupled systems: fixed-point-iteration-based approaches and…”
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