Produção Nacional
Revisado por pares
Marcela Machado, Maciej Dutkiewicz, Carlos Frederico Trotta Matt, Daniel A. Castello,
The paper treats a new approach of dynamic analysis of a conductor cable of an overhead transmission line under the theoretical background of spectral element method (SEM). The methodology relies on the analytical solution of the displacement wave equation in the frequency domain; moreover, it both enhances the accuracy of model predictions and reduces the computational efforts when compared to a finite element (FE) model. Two numerical models based on SEM are built for transmission lines taking into ...
Tópico(s): Thermal Analysis in Power Transmission
2019 - Elsevier BV | Mechanical Systems and Signal Processing
Produção Nacional
Revisado por pares
Carlos Frederico Trotta Matt, João Nazareno Nonato Quaresma, Renato M. Cotta,
A hybrid numerical-analytical solution is proposed to analyze MHD (magnetohydrodynamic) natural convection of an electrically-conducting fluid within a square cavity, differentially heated at the sidewalls and subjected to an inclined external magnetic field. The first goal is to expand the spectrum of application of the so called Generalized Integral Transform Technique (GITT), dealing with a multiphysics formulation, while further demonstrating the relative merits of the proposed eigenfunction expansion ...
Tópico(s): Fractional Differential Equations Solutions
2017 - Elsevier BV | International Journal of Heat and Mass Transfer
Produção Nacional
Revisado por pares
Wescley Tiago Batista de Sousa, Alexander Polasek, R. Dias, Carlos Frederico Trotta Matt, R. de Andrade,
Tópico(s): Superconducting Materials and Applications
2014 - Elsevier BV | Cryogenics
Produção Nacional
Revisado por pares
The main purpose of the current work is to employ an integral transform approach based on eigenfunction expansion and on an implicit filter scheme in order to solve the governing equations for the transverse vibrations of a cantilever beam clamped at one end and with an eccentric tip mass in the axial direction at the other end. Numerical results are obtained for both the undamped and damped natural frequencies of the system, as well as for its transverse displacement due to arbitrarily time-varying ...
Tópico(s): Bladed Disk Vibration Dynamics
2013 - Elsevier BV | Applied Mathematical Modelling
Produção Nacional
Revisado por pares
The classical integral transform technique (CITT) is employed to derive an exact analytical solution for the transverse vibrations of a damaged Euler–Bernoulli beam simply supported at both ends. The exact analytical solution derived with the CITT approach requires knowledge of the eigenvalues and eigenfunctions of a related eigenvalue problem, whose hybrid solution is further obtained with the generalized integral transform technique (GITT). Expressions derived for the natural frequencies, mode shapes ...
Tópico(s): Seismic Performance and Analysis
2013 - Elsevier BV | Applied Mathematical Modelling
Produção Nacional
Revisado por pares
Wescley Tiago Batista de Sousa, Alexander Polasek, Carlos Frederico Trotta Matt, R. de Andrade,
In this paper, we investigate the recovery process of resistive superconducting fault current limiters (R-SCFCLs) after fault clearance. The R-SCFCL module consists of an MCP-BSCCO-2212 bulk coil. A short-circuit test showed that an assembly containing 12 R-SCFCL modules is able to limit a prospective fault current of about 99 to just 11 kA peak within the first half-cycle of current (under Vo = 1 kV rms ). The current limiting behavior and the recovery process were analyzed by mean of simulations considering ...
Tópico(s): Superconducting Materials and Applications
2013 - IEEE Council on Superconductivity | IEEE Transactions on Applied Superconductivity
Produção Nacional
Revisado por pares
Abstract The aim of the present paper is to describe the application of the generalized integral transform technique (GITT) for the theoretical analysis of wind‐induced vibrations on overhead conductors. In the mathematical model adopted, the complicated helicoidal geometry of the conductor is simplified by treating it as a homogeneous taut string simple supported at both ends. Solving the governing partial differential equation through the GITT approach, one derives purely analytical or analytical– ...
Tópico(s): Wind and Air Flow Studies
2008 - Wiley | International Journal for Numerical Methods in Engineering
Carlos Frederico Trotta Matt, Manuel E. Cruz,
This article presents a numerical scheme, based on an isoparametric second-order finite-element discretization of the unit cell heat conduction problem, to calculate the effective thermal conductivity of composite materials with general 3-D microstructures and interfacial thermal resistance. Representative numerical results for the effective conductivity of ordered arrays of spheres, prolate ellipsoids of revolution, and finite-length circular cylinders are presented and, when possible, validated ...
Tópico(s): Numerical methods in engineering
2007 - Taylor & Francis | Numerical Heat Transfer Part A Applications
Produção Nacional
Revisado por pares
Bruno Reis Cardoso, Carlos Frederico Trotta Matt, Heloísa Cunha Furtado, Luiz Henrique de Almeida,
Tópico(s): Fatigue and fracture mechanics
2015 - Springer Science+Business Media | Journal of Materials Engineering and Performance
Produção Nacional
Daniel A. Castello, Carlos Frederico Trotta Matt,
The present work is aimed at building a computational model for a typical stranded cable based on the basic principles of Verification and Validation. The model calibration and model tracking are guided based on a pool of validation metrics suitable for data which are commonly used in structural dynamics. The estimator used for the associated inverse problem is the Maximum a Posteriori estimator and the parameter estimation process is performed sequentially over experiments. Experimental tests have ...
Tópico(s): Lightning and Electromagnetic Phenomena
2011 - Springer Science+Business Media | Journal of the Brazilian Society of Mechanical Sciences and Engineering
Produção Nacional
Revisado por pares
C.E.Z. Cordeiro, Leonardo Tavares Stutz, Diego C. Knupp, Carlos Frederico Trotta Matt,
The present work addresses the inverse problem of damage identification within the Bayesian framework. The inverse problem is formulated as a parameter estimation one and it is built on the response of the continuous model of the structure provided by the Generalized Integral Transform technique. The Hamiltonian Monte Carlo (HMC) method is considered for sampling the posterior probability density function of the cohesion parameters, which are the ones considered for the description of the damage ...
Tópico(s): Non-Destructive Testing Techniques
2021 - Elsevier BV | Applied Mathematical Modelling
Produção Nacional
Revisado por pares
Carlos Frederico Trotta Matt, Manuel E. Cruz,
Despite the importance of short-fiber composites in current engineering applications, few numerical studies have focused on their macroscopic heat conduction behavior. In this paper, we apply a finite-element-based methodology to calculate representative results for the effective thermal conductivities of composites reinforced with anisotropic short fibers. The investigated three-dimensional microstructures are ordered and consist of circular cylinders placed at the center of parallelepipedonal ...
Tópico(s): Mechanical Behavior of Composites
2006 - Begell House | Enhanced heat transfer/Journal of enhanced heat transfer
Produção Nacional
Revisado por pares
The current work is concerned with eigenfunction expansion of the transient response of general one-dimensional non-self-adjoint distributed dynamic systems. The main goal of the current work is to propose an alternative eigenfunction expansion approach for transient analysis of general one-dimensional non-self-adjoint systems which avoids complex-valued eigenvalue problems. With the implicit filter scheme proposed here one splits the solution into two additive components, namely, a filtered solution ...
Tópico(s): Fluid Dynamics and Vibration Analysis
2014 - Elsevier BV | Applied Mathematical Modelling
Produção Nacional
Revisado por pares
Wescley Tiago Batista de Sousa, Alexander Polasek, R. Dias, Carlos Frederico Trotta Matt, F A da Silva, R. de Andrade,
A non-adiabatic model for SCFCL has been developed. The model is based on the superconductor EJ curve. Heat transfer is modeled by means of a thermal electrical analogy, making the simulations easier to be implemented, because the coupling between electrical and the heat transfer differential equations becomes a straightforward task. Simulation results agree well with experimental testing.
Tópico(s): Quantum and electron transport phenomena
2014 - IOP Publishing | Journal of Physics Conference Series
Produção Nacional
Revisado por pares
William Hernandez, Daniel A. Castello, Carlos Frederico Trotta Matt,
This work is aimed at building models to predict the bending vibrations of stranded cables used in high-voltage transmission lines. The present approach encompasses model calibration, validation and selection based on a statistical framework. Model calibration is tackled using a Bayesian framework and the Delayed Rejection Adaptive Metropolis (DRAM) sampling algorithm is employed to explore the posterior probability of the unknown model parameters. Two model classes are proposed to predict the bending ...
Tópico(s): Fluid Dynamics and Vibration Analysis
2018 - Taylor & Francis | Inverse Problems in Science and Engineering
Produção Nacional
Revisado por pares
Carlos Frederico Trotta Matt, Manuel E. Cruz,
The goals envisioned for the current chapter are threefold. First, it gives a general overview of heat conduction in two-phase composite materials with three dimensional microstructures and interfacial thermal resistance. Second, it describes the application of homogenization theory to the multiscale heat conduction problem in the composite medium in order to derive the boundary-value problem defined on a representative volume element of the composite microstructure (the cell problem) and an expression ...
Tópico(s): Advanced ceramic materials synthesis
2010 - Springer International Publishing | Advanced structured materials
The current work combines the generalized probabilistic approach of uncertainties recently developed by Soize (2010)—with the generalized integral transform technique in order to take into account two types of uncertainties: (i) model-parameter uncertainties and (ii) model uncertainties induced by modelling errors. The generalized integral transform technique (or GITT) is a powerful meshless hybrid analytical-numerical approach based on eigenfunction expansions to solve systems of partial differential ...
Tópico(s): Seismic Performance and Analysis
2021 - Elsevier BV | Applied Mathematical Modelling
Produção Nacional
L.C.S. Nunes, Daniel A. Castello, P. A. M. dos Santos, Carlos Frederico Trotta Matt,
In the present work, the Digital Image Correlation (DIC) measurement method is used to obtain the displacement field of specific regions of a cantilever beam under bending. These fields are used within an inverse analysis scheme in order to obtain the elasticity modulus of the beam material. The parameter estimation is performed by means of the minimization of an error function comprising of the difference between the displacement fields obtained from the experiment and from an appropriate mathematical ...
Tópico(s): Advanced Measurement and Metrology Techniques
2009 - Springer Science+Business Media | Journal of the Brazilian Society of Mechanical Sciences and Engineering
Aloysio Garcia Neto, Eduardo Radespiel, Alessandro Aparecido Zanetti, Daniel Müller, Carlos Vinicius Maranhao Costa, Matheus Henrique Pedrassa, Raffaele Trotta Siciliano, Frederico Rodrigues Minucci, Wanessa Patricia Lins Ferreira,
Tópico(s): Reservoir Engineering and Simulation Methods
2022 - | Technical Papers ... Rio Oil & Gas
Produção Nacional
Revisado por pares
Heloísa Cunha Furtado, Fernanda Santos, Bruno Reis Cardoso, Carlos Frederico Trotta Matt, Luiz Henrique de Almeida,
The present paper describes the development of a monitoring, analysis and diagnosis system of power plant equipments based on strain measurements. The objective is to help companies increase availability and reduce maintenance costs. The aim is the integrity evaluation of a main steam and a hot reheat steam piping through inspection, strain monitoring and computational diagnosis. The benefits are, among others, reduction in the uncertainty of the remaining life prediction and reduction of work, ...
Tópico(s): Sensor Technology and Measurement Systems
2013 - Trans Tech Publications | Key engineering materials
S Trotta, Vivian Iara Strehlau, Frederico De Araujo Turolla,
O objetivo deste trabalho é avaliar a importância da escolha de uma cidade para hospedar um grande evento internacional para imagem desta cidade sede e a manifestação em uma esfera positiva ou negativa, levando em conta a qualificação do teor das notícias analisadas. São analisadas as cidades de Curitiba – sede da copa do mundo da FIFA de 2014 e de Florianópolis – cidade para comparativo de pesquisa após o anúncio da escolha da primeira como cidade-sede. Este estudo contém um referencial teórico sobre ...
Tópico(s): Consumer Behavior in Brand Consumption and Identification
2015 - UNIVERSIDADE DO VALE DO ITAJAÍ | Turismo - Visão e Ação
Produção Nacional
Revisado por pares
A. C. Aguilar, Z. Ahmed, C. Aidala, Salina Ali, V. Andrieux, J. Arrington, Adnan Bashir, В. В. Бердников, Daniele Binosi, Lei Chang, Chen Chen, Muyang Chen, J. P. B. C. de Melo, Markus Diefenthaler, M. Ding, R. Ent, T. Frederico, Fei Gao, R. W. Gothe, Mohammad Hattawy, T. J. Hobbs, T. Horn, G. M. Huber, Shaoyang Jia, C. Keppel, G. Krein, Huey-Wen Lin, Cédric Mezrag, V. Mokeev, R. Montgomery, H. Moutarde, Pavel Nadolsky, Joannis Papavassiliou, Kijun Park, Ian L. Pegg, Jen-Chieh Peng, S. Platchkov, Si-xue Qin, Khépani Raya, P. E. Reimer, David Richards, Craig D. Roberts, J. Rodrı́guez-Quintero, N. Sato, Sebastian Schmidt, Jorge Segovia, A.S. Tadepalli, Richard Trotta, Z. Ye, Rikutaro Yoshida, Shu-Sheng Xu,
Understanding the origin and dynamics of hadron structure and in turn that of atomic nuclei is a central goal of nuclear physics. This challenge entails the questions of how does the roughly 1GeV mass-scale that characterizes atomic nuclei appear; why does it have the observed value; and, enigmatically, why are the composite Nambu-Goldstone (NG) bosons in quantum chromodynamics (QCD) abnormally light in comparison? In this perspective, we provide an analysis of the mass budget of the pion and proton ...
Tópico(s): High-Energy Particle Collisions Research
2019 - Springer Science+Business Media | The European Physical Journal A
Produção Nacional
Revisado por pares
J. Arrington, C. Ayerbe Gayoso, Patrick Barry, В. В. Бердников, Daniele Binosi, Lei Chang, Markus Diefenthaler, M. Ding, R. Ent, T. Frederico, Yulia Furletova, T. J. Hobbs, T. Horn, G. M. Huber, S. Kay, C. Keppel, H-W Lin, Cédric Mezrag, R. Montgomery, Ian L. Pegg, Khépani Raya, P. E. Reimer, David Richards, Craig D. Roberts, J. Rodrı́guez-Quintero, D. Romanov, G. Salmè, N. Sato, Jorge Segovia, P. S. Stepanov, A.S. Tadepalli, R. Trotta,
How the bulk of the Universe's visible mass emerges and how it is manifest in the existence and properties of hadrons are profound questions that probe into the heart of strongly interacting matter. Paradoxically, the lightest pseudoscalar mesons appear to be the key to the further understanding of the emergent mass and structure mechanisms. These mesons, namely the pion and kaon, are the Nambu-Goldstone boson modes of QCD. Unravelling their partonic structure and the interplay between emergent ...
Tópico(s): High-Energy Particle Collisions Research
2021 - IOP Publishing | Journal of Physics G Nuclear and Particle Physics
Rabah Abdul Khalek, Alberto Accardi, J. Adam, Daniel Adamiak, W. Akers, M. Albaladejo, A. Baty, M. Alexeev, F. Ameli, P. Antonioli, N. Armesto, W. Armstrong, M. Arratia, J. Arrington, A. Asaturyan, M. Asai, E. C. Aschenauer, S. Aune, Harutyun Avagyan, C. Ayerbe Gayoso, B. Azmoun, Alessandro Bacchetta, M. D. Baker, Fernando Barbosa, L. Barion, K. N. Barish, Patrick Barry, M. Battaglieri, A. Bazilevsky, N. K. Behera, F. Benmokhtar, В. В. Бердников, J. C. Bernauer, Valerio Bertone, Shohini Bhattacharya, Chiara Bissolotti, Daniël Boer, M. Boglione, M. Bondì, Priyanka Boora, Ignacio Borsa, F. Bossú, Giuseppe Bozzi, J. D. Brandenburg, Nathan Brei, A. Bressan, W. K. Brooks, S. Bufalino, M. H. S. Bukhari, Volker Burkert, N.H. Buttimore, A. Camsonne, A. Celentano, Francesco Giovanni Celiberto, W. C. Chang, C. Chatterjee, Kai Chen, T. Chetry, T. Chiarusi, Yang-Ting Chien, M. Chiosso, X. Chu, E. Chudakov, G. Cicala, E. Cisbani, Ian C. Cloët, Christopher Cocuzza, P. L. Cole, D. Colella, J.L. Collins, M. Constantinou, M. Contalbrigo, G. Contin, R. Corliss, Wim Cosyn, Aurore Courtoy, J. Crafts, R. Cruz-Torres, R.C. Cuevas, U. D’Alesio, S. Dalla Torre, D. Das, S. Dasgupta, C. Da Silva, W. Deconinck, M. Defurne, W. Degraw, K. Dehmelt, A. Del Dotto, Filippo Delcarro, A. Deshpande, William Detmold, R. De Vita, Markus Diefenthaler, C. Dilks, Dhruv Utpalkumar Dixit, Sayipjamal Dulat, Adrian Dumitru, R. Dupré, J. M. Durham, Miguel G. Echevarría, L. El Fassi, D. Elia, R. Ent, R. Esha, Jacob Ethier, O. Evdokimov, O. Eyser, C. Fanelli, R. Fatemi, S. Fazio, C. Fernández-Ramírez, M. Finger, M. Finger, D. S. Fitzgerald, Carlo Flore, T. Frederico, I. Friščić, Sara Fucini, S. Furletov, Yulia Furletova, C. Gal, Leonard Gamberg, H. Gao, P. Garg, D. Gaskell, K. Gates, M. B. Gay Ducati, Michael Gericke, G. G. Da Silveira, F. X. Girod, D. I. Glazier, K. Gnanvo, V. P. Gonçalves, L. Gonella, J. O. Gonzalez-Hernandez, Y. Goto, F. Grancagnolo, L. Greiner, W. Guryn, V. Guzey, Yoshitaka Hatta, M. Hattawy, F. Hauenstein, X. He, T. K. Hemmick, O. Hen, W.G. Heyes, D. W. Higinbotham, A. N. Hiller Blin, T. J. Hobbs, M. Hohlmann, T. Horn, Tie-Jiun Hou, J. Huang, Q. Huang, G. M. Huber, C. E. Hyde-Wright, G. Iakovidis, Y. Ilieva, B. Jacak, Peter Martin Jacobs, M. B. Jadhav, Z. Janoška, A. Jentsch, Tomáš Ježo, Xiaoxian Jing, Paul Jones, K. Joo, S. Joosten, V. Kafka, N. Kalantarians, G. Kalicy, Daekyoung Kang, Zhong-Bo Kang, K. Kauder, S. Kay, C. Keppel, Jihoon Kim, A. Kiselev, Michael Klasen, S. R. Klein, H. T. Klest, O. Korchak, A. Kostina, Piotr Kotko, Yuri V. Kovchegov, M. Krelina, S. Kuleshov, S. Kumano, K.S. Kumar, R. Kumar, L. Kumar, Krešimir Kumerički, A. Kusina, Krzysztof Kutak, Y. S. Lai, K. Lalwani, T. Lappi, J. Lauret, M. Lavinsky, David Lawrence, D. Lednický, Christopher Lee, Kyle Lee, S.H. Lee, S. Levorato, H. Li, Shirley Weishi Li, W. Li, X. Li, X. Li, W.B. Li, T. Ligonzo, H. Liu, M. X. Liu, X. Liu, Simonetta Liuti, N. Liyanage, Cédric Lorcé, Z. H. Lu, Gonzalo Lucero, N. S. Lukow, Enrico Lunghi, R. Majka, Yiannis Makris, I. Mandjavidze, Sonny Mantry, Heikki Mäntysaari, Frank Marhauser, P. Markowitz, L. Marsicano, A. Mastroserio, V. Mathieu, Yacine Mehtar-Tani, Wally Melnitchouk, L. Cunqueiro, Andreas Metz, Z.-E. Meziani, Cédric Mezrag, M. Mihovilovič, R. Milner, M. Mirazita, H. Mkrtchyan, A. Mkrtchyan, В. В. Мочалов, V. V. Moiseev, M. M. Mondal, A. Morreale, D. Morrison, Leszek Motyka, H. Moutarde, C. Muñoz Camacho, F. Murgia, M. Murray, P. Musico, P. Nadel-Turoński, Pavel Nadolsky, J. D. Nam, P. R. Newman, D. Neyret, D. Nguyen, Emanuele R. Nocera, F. Noferini, F. Noto, A. S. Nunes, V. Okorokov, Fred Olness, J. D. Osborn, B. S. Page, S. Park, Asia Parker, K. Paschke, B. Pasquini, Hannu Paukkunen, Sebouh J. Paul, C. Pecar, Ian L. Pegg, C. Pellegrino, C. Peng, L. Pentchev, R. Perrino, F. Petriello, R. Petti, A. Pilloni, C. Pinkenburg, B. Pire, Cristian Pisano, Daniel Pitonyak, A. Poblaguev, Tomas Polakovic, M. Posik, M. Potekhin, R. Preghenella, Sean Preins, Alexei Prokudin,
This report describes the physics case, the resulting detector requirements, and the evolving detector concepts for the experimental program at the Electron-Ion Collider (EIC). The EIC will be a powerful new high-luminosity facility in the United States with the capability to collide high-energy electron beams with high-energy proton and ion beams, providing access to those regions in the nucleon and nuclei where their structure is dominated by gluons. Moreover, polarized beams in the EIC will give ...
Elsevier BV
Produção Nacional
Assis da Costa Oliveira, Erika Macedo Moreira, Carlos Frederico Marés de Souza Filho, Marianna Dellalana Quintans Trotta, Ricardo Prestes Pazello, Alexandre Bernardino Costa, Diego Augusto Diehl, Talita Tatiana Dias Rampin,
InSURgência: revista de direitos e movimentos sociais. Brasília: IPDMS; PPGDH/UnB; Lumen Juris, vol. 1, n. 2, julho-dezembro de 2015, p. 1-5.
Tópico(s): Brazilian Legal Issues
2016 - | InSURgência revista de direitos e movimentos sociais