RSS 1.0Departamento de Engenharia Mecânica
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Thermal efficiency of open-cell metal foams: impact of foam thickness by comparing correlations and numerical modeling
; Oliveira, Iago Lessa
; Cardoso, Elaine Maria (Applied Thermal Engineering, 2022) [Artigo]
Engineered surfaces are increasingly used to cool electronic devices with dielectric fluids in two-phase change. A common type of such surfaces is the open-cell metal foam. In this work, our goal was two-fold, to assess ... -
Non-newtonian blood modeling in intracranial aneurysm hemodynamics: impact on the WSS and OSI metrics for ruptured and unruptured cases
Oliveira, Iago Lessa; Santos, Gabriel Bertacco ; Gasche, José Luiz ; ; (Journal of Biomechanical Engineering, 2021) [Artigo]
When simulating blood flow in intracranial aneurysms (IAs), the Newtonian model seems to be ubiquitous. However, analyzing the results from the few studies on this subject, the doubt remains on whether it is necessary to ... -
Experimental study of the cavitation on bio-inspired hydrofoils with leading-edge protuberances
(Brazilian Congress of Thermal Sciences and Engineering, 2022) [Artigo]Devices that suffer from cavitation can have their lifetime and efficiency decreased. A possible alternative found in the literature to mitigate the cavitation is the use of bio-inspired devices such as leading-edge ... -
Exact general solutions for the mode shapes of longitudinally vibrating non-uniform rods via Lie symmetries
Nunes, Afonso W.; da Silva, Samuel ; (Journal of Sound and Vibration, 2022) [Artigo]
A Lie symmetry method-based approach is proposed for systematically computing general solutions in closed-form for the mode shape equation of non-uniform and unconventional vibrating rods. The mode shape equation is modeled ... -
A new approach to suppressing the Sommerfeld effect in vibrating structures
Brogin, João Angelo Ferres; Bueno, Douglas D. ; ; (Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2022) [Artigo]
The Sommerfeld effect is a non-linear phenomenon which occurs due to the interaction between non-ideal sources of energy and a mechanical system operating in the non-stationary regime. In certain conditions, this leads to ... -
Dynamic modeling and control of a spherical pendulum with a VSCMG
; ; da Silva, Samuel; (Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2022) [Artigo]
The study of inverted pendulum configurations has attracted the attention of researchers during many decades. One of the main reasons is that inverted-pendulum models have the feature of approximating the dynamics of many ... -
Chaotic and stochastic dynamics of epileptiform-like activities in sclerotic hippocampus resected from patients with pharmacoresistant epilepsy
; ; Brogin, João A.F.; Bueno, Douglas D. ; ; ; (PLoS Computational Biology, 2022) [Artigo]
The types of epileptiform activity occurring in the sclerotic hippocampus with highest incidence are interictal-like events (II) and periodic ictal spiking (PIS). These activities are classified according to their event ... -
Optimal placement of piezoelectric sensor/actuators for smart structures vibration control
Lopes, Vicente; ; (Dynamical Systems and Control, 2016) [Capítulo de livro]
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Stable computation of mode shapes of uniform Euler-Bernoulli beams subject to classical and non-classical boundary conditions via Lie symmetries
Nunes, Afonso Willian; Silva, Samuel da ; ; Gonçalves, Paulo José Paupitz (Proceedings of the 8th International Symposium on Solid Mechanics, 2022) [Artigo]
Studying structural elements undergoing transverse vibration is crucial for scientific and industrial applications' design, safety, and efficiency. The Euler-Bernoulli beam model addresses a broad class of slender beam-like ... -
Invariant mode shape solutions of Kirchhoff uniform rectangular plates
Nunes, Afonso Willian; Silva, Samuel da ; (Proceedings of the XIX International Symposium on Dynamic Problems of Mechanics, 2023) [Artigo]
The present work derives exact --- invariant --- solutions to the mode shape equation of uniform rectangular Kirchhoff plates via enhanced group analysis techniques. The study of the optimal system of the finite-dimensional ... -
Exact general solutions for the mode shapes of longitudinally vibrating non-uniform rods via Lie symmetries
Nunes, Afonso Willian; Silva, Samuel da ; (Journal of Sound and Vibration, 2022) [Artigo]
A Lie symmetry method-based approach is proposed for systematically computing general solutions in closed-form for the mode shape equation of non-uniform and unconventional vibrating rods. The mode shape equation is modeled ... -
The Finite Element Method applied in the viscoelastic constitutive model of Kelvin-Voigt for characterization of the soil dynamic response to water leakage simulation
Proenca, Matheus S.; Paschoalini, Amarildo T. ; Silva, Joao B. C. ; Souza, Adriano ; Obata, Daniel H. S. ; Lima, Luis P. M. ; Boaventura, Otavio D. Z. (Journal Of The Brazilian Society Of Mechanical Sciences And Engineering, 2022) [Artigo]
Sustainable water management is a highly relevant global topic; the existing problems in the area affect the human, social, environmental and economic development in any country. In Brazil, water distribution networks lose, ... -
Damage Detection Approach for Bridges under Temperature Effects using Gaussian Process Regression Trained with Hybrid Data
Silva, Samuel da; ; (Journal Of Bridge Engineering, 2022) [Artigo]
The success of detecting damage robustly relies on the availability of long periods of past data covering multiple weather scenarios and on the information contained in the data used during the learning process. Thus, the ... -
On a Qualitative and Lie Symmetry Analysis for a Pendulum with Two Reaction Wheels
; ; ; Da Silva, S. (Quarterly Journal Of Mechanics And Applied Mathematics, 2022) [Artigo]
In this article, it is studied the mechanical system formed by a pendulum with two reaction wheels in which the friction torque is assumed to follow a Coulomb law. A qualitative analysis of the system is performed for the ... -
A numerical investigation of the mechanics of intracranial aneurysms walls: Assessing the influence of tissue hyperelastic laws and heterogeneous properties on the stress and stretch fields
(Journal of the Mechanical Behavior of Biomedical Materials, 2022) [Artigo]Numerical simulations have been extensively used in the past two decades for the study of intracranial aneurysms (IAs), a dangerous disease that occurs in the arteries that reach the brain and affect overall 3.2 % of a ... -
Pulsed Nd:YAG laser welding of UNS S 32205 duplex stainless steel
Crespo, Gillian da S.; Padilha, Josiel L. ; Sokei, Celso R. ; Tokimatsu, Ruis C. ; Gallego, Juno ; Ventrella, Vicente A. (Materials Science Forum, 2016) [Trabalho apresentado em evento]
This paper reports an experimental study of laser welding on duplex stainless steel UNS S32205 employed in the oil and natural gas industries. A pulsed Nd:YAG laser was used to weld the specimens. Bead on plate condition ... -
The Effect of Periodic Maintenance on Pervious Concrete Pavements
Da Silva, Rodrigo Garozi; De Albuquerque, Maria Da Consolação Fonseca ; Bortoletto, Marcelo ; De Spósito, Felipe Almeida ; Gonçalves, Aparecido Carlos ; De Morais Alcântara, Marco Antonio (Revista Materia, 2021) [Artigo]
Pervious concrete pavements are interesting from an environmental and social viewpoint. However, this type of pavement has as the main disadvantage of losing permeability over time by the clogging process. The aim of this ... -
Analysis of the Influence of Contamination in Lubricant by Biodiesel in a Pin-On-Disk Equipment
; Gonçalves, Aparecido Carlos; Da Consolação Fonseca de Albuquerque, Maria ; Chavarette, Fábio Roberto ; ; De Almeida, Estevão Fusaro (Materials Research, 2022) [Artigo]
The introduction of biodiesel to commercial diesel is being increased every year. The need to check this addition to the engine and lubricant is important for automakers and internal combustion engine manufacturers. The ... -
Design, construction and evaluation of a device for the manufacture of ferrogram for analytical ferrography
; Gonçalves, Aparecido Carlos; Ribeiro, Victor Hugo ; Chavarette, Fábio Roberto ; (Lubrication Science, 2022) [Artigo]
The dynamism of the reliability of machines and equipment has the objective of availability, leading to the development of several techniques of predictive maintenance, to define the ideal point for the intervention. Among ... -
Reliability analysis using experimental statistical methods and ais: Application in continuous flow tubes of gaseous medium
; Chavarette, Fábio Roberto; Gonçalves, Aparecido Carlos ; ; ; Panosso, Alan Rodrigo ; (Acta Scientiarum - Technology, 2021) [Artigo]
The motivation for the development of this work arose from the observation of maintenance in pressure vessels, which are categorized as highly hazardous security risk products. The costs of detecting failures in the ...