Search Results - "Lenzi, Arcanjo"

Metamaterial based on labyrinthine tubes loaded periodically and ultra-low phase velocity to the low-frequency energy control by Almeida, G. N., Vergara, E. F., Lenzi, Arcanjo

“…Sound energy control at low frequencies ( ≤ 1000 Hz) is necessary and very important in acoustics, especially when considering scientific and technological…”
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Acoustic analysis of a metasurface for normal and random incidence sound waves by do N. Almeida, Gildean, Vergara, Erasmo F., Barbosa, Leandro R., Lenzi, Arcanjo, Mareze, Paulo H., Birch, Robert S.

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Broadband vibration attenuation from a one-dimensional acoustic black hole resonator for plate-on-plate structures by Souza, Marcos R., Fabro, Adriano T., Lenzi, Arcanjo

“…This paper investigates the vibrational behaviour and attenuation performance of a plate connected to a plate-like resonator equipped with a 1D acoustic black…”
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Excitation of pipe bending modes by internal pressure: A phenomenon present in refrigerators with skin condenser by Schaefer, Ricardo Luís, Lenzi, Arcanjo

“…The concept of skin condenser refrigerators has been increasingly explored for its capacity to provide a larger internal cabinet volume. However, the discharge…”
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Sound absorption performance of a labyrinthine metamaterial with arbitrary cross-sectional microperforations by Almeida, Gildean do N., Vergara, Erasmo F., Barbosa, Leandro R., Lenzi, Arcanjo, Cassettari, Iago, Mikulski, Robson Z.

“…Studies on acoustic metamaterials (AMM) with coiled spaces as a solution for low-medium frequency sound absorption are regularly presented. However, the…”
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A low-frequency sound absorber based on micro-slit and coiled cavity by Almeida, Gildean do N., Vergara, Erasmo F., Barbosa, Leandro R., Lenzi, Arcanjo, Birch, Robert S.

“…The design of a compact low-frequency acoustic absorber whose thickness is less than the operating frequency wavelength is a difficult challenge. However,…”
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Estimation and minimization of errors caused by sample size effect in the measurement of the normal absorption coefficient of a locally reactive surface by Brandão, Eric, Lenzi, Arcanjo, Cordioli, Julio

“…In this paper the effects of the finite size of a sample on the measurement of the normal absorption coefficient are explored with the aid of a BEM model. Both…”
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Identification of Three-Dimensional Equivalent Material Properties for Laminated Disks Pack of Electric Machine Stators: Application in Reciprocal Compressors by Lenzi, Arcanjo, Fiorentin, Thiago A., Silva, Olavo M., Marcon, Jean C.

“…Laminated structures can be represented computationally by the finite element method (FEM) using the homogenization procedure, which consists of the adjustment…”
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On a Stochastic Regularization Technique for Ill-Conditioned Linear Systems by Moura, Henrique Gomes, Junior, Edson Costa, Lenzi, Arcanjo, Rispoli, Vinicius Carvalho

“…Knowledge about the input–output relations of a system can be very important in many practical situations in engineering. Linear systems theory comes from…”
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A critical analysis of using the dynamic compliance as objective function in topology optimization of one-material structures considering steady-state forced vibration problems by Silva, Olavo M., Neves, Miguel M., Lenzi, Arcanjo

“…Material based models for topology optimization in harmonic vibration problems present some inconveniences, especially when the goal is to obtain low vibration…”
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On the use of active and reactive input power in topology optimization of one-material structures considering steady-state forced vibration problems by Silva, Olavo M., Neves, Miguel M., Lenzi, Arcanjo

“…As studied by the authors in a previous work, applying topology optimization to minimize overall dynamic response of structures under time-harmonic loads may…”
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Suspension optimization for a compressor assembled on a refrigerator by Pescador Sarda, Alexandre A., Lenzi, Arcanjo

“…Noise annoyance generated by electrical machines is evaluated based on the sound power level (SPL) parameter measured in a reverberationroom or using a…”
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Effect of flow on the acoustic length correction factor of a Helmholtz resonator neck at high Strouhal number: A symmetric three-dimensional numerical parametric study by Tuozzo, Diego M., Lenzi, Arcanjo, Silva, Olavo M.

“…The effect of flow on the acoustic length correction factor (ALCF) of a Helmholtz resonator (HR) neck is investigated numerically in order to achieve an…”
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An efficient model order reduction of frequency-dependent double panel systems by Cavalheiro, Thiago, Lenzi, Marcos S., Martins, Gustavo C., Lenzi, Arcanjo

“…This paper treats a typical industrial vibroacoustic problem, consisting of a double panel under forced vibration which radiates to the far-field. A finite…”
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On the use of metamaterials with negative effective parameters for dual sound energy control by Almeida, Gildean do N., Vergara, Erasmo F., Barbosa, Leandro R., Lenzi, Arcanjo, Silva, Olavo M.

“…This study investigates the comprehensive control of sound energy through a acoustic metamaterial. The unit cell is composed of a main waveguide periodically…”
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Time-harmonic analysis of acoustic pulsation in gas pipeline systems using the Finite Element Transfer Matrix Method: Theoretical aspects by Tuozzo, Diego M., Silva, Olavo M., Kulakauskas, Lucas V.Q., Vargas, Jacson G., Lenzi, Arcanjo

“…Structural vibration of gas pipeline systems can be strongly affected by the response of the acoustic domain represented by the gas being transported through…”
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Sound absorption metasurface with symmetrical coiled spaces and micro slit of variable depth by N. Almeida, Gildean do, Vergara, Erasmo F., Barbosa, Leandro R., Lenzi, Arcanjo, Birch, Robert S.

“…An acoustic metasurface (AMS) is proposed comprising a panel containing a micro slit of variable depth coupled to a thin cavity of symmetrical coiled spaces…”
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Psychoacoustic model for detecting the sensation of impulsivity in acoustic signals from refrigerators by Silveira, Henrique Alende da, Vergara, Erasmo Felipe, Lenzi, Arcanjo, Santos, Gabriel Brandão

“…This study investigates the perception of impulsivity in audio signals specifically caused by thermal expansion (cracking noise) in domestic refrigerators. It…”
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Corrigendum to “A critical analysis of using the dynamic compliance as objective function in topology optimization of one-material structures considering steady-state forced vibration problems” [J. Sound Vib. 444 (2019) 1–20] by Silva, Olavo M., Neves, Miguel M., Lenzi, Arcanjo

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Corrigendum to “On the use of active and reactive input power in topology optimization of one-material structures considering steady-state forced vibration problems” [J. Sound Vib. 464 (2020) 114989] by Silva, Olavo M., Neves, Miguel M., Lenzi, Arcanjo

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