Exploració per autor "Roca Cazorla, David"
Ara es mostren els items 1-11 de 11
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A computational multiscale homogenization framework accounting for inertial effects: application to acoustic metamaterials modelling
Roca Cazorla, David; Lloberas Valls, Oriol; Cante Terán, Juan Carlos; Oliver Olivella, Xavier (2018-03)
Article
Accés obertA framework, based on an extended Hill–Mandel principle accounting for inertial effects (Multiscale Virtual Work principle), is developed for application to acoustic problems in the context of metamaterials modelling. The ... -
Broadband and Intense Sound Transmission Loss by a Coupled-Resonance Acoustic Metamaterial
Roca Cazorla, David; Hussein, Mahmoud (2021-11-01)
Article
Accés obertThe advent of acoustic metamaterials has opened up an emerging frontier in the control of sound transmission. A key limitation, however, is that an acoustic metamaterial based on a single local resonator in the unit cell ... -
Coiled phononic crystal with periodic rotational locking: subwavelength bragg band gaps
Willey, Carson L.; Chen, Vincent W.; Roca Cazorla, David; Kianfar, Armin; Hussein, Mahmoud I.; Juhl, Abigail T. (American Physical Society (APS), 2022-07-15)
Article
Accés obertPhononic crystals (PnC) are spatially periodic materials with band gaps that form by Bragg scattering of elastic waves. Within the frequency range of a band gap, wave propagation is not admitted. A long-standing limitation ... -
Computational design of locally resonant acoustic metamaterials
Roca Cazorla, David; Yago Llamas, Daniel; Cante Terán, Juan Carlos; Lloberas Valls, Oriol; Oliver Olivella, Xavier (2019-03)
Article
Accés obertThe so-called Locally Resonant Acoustic Metamaterials (LRAM) are considered for the design of specifically engineered devices capable of stopping waves from propagating in certain frequency regions (bandgaps), this making ... -
Computational Material design study of acoustic metamaterials and structures by topology optimization
Roca Cazorla, David (Universitat Politècnica de Catalunya, 2016-06)
Projecte Final de Màster Oficial
Accés restringit per decisió de l'autorAcoustic metamaterials are artificially designed and manufactured structures with dy-namical properties that are not typically found in naturally-occurring materials. The design of acoustic metamaterials is considered to ... -
Estudi de la resolució numèrica de les equacions de conservació de massa, moment i energia, orientat a diversos problemes d'enginyeria: energia solar concentrada.
Roca Cazorla, David (Universitat Politècnica de Catalunya, 2014-06)
Treball Final de Grau
Accés restringit per decisió de l'autorAprofitant els grans avenços tecnològics dels darrers anys en eines computacional, en aquest treball es pretén desenvolupar un codi en C++ per a dur a terme càlculs CFD senzills de manera que serveixi d’introducció al camp ... -
Experimental and numerical assessment of local resonance phenomena in 3D-printed acoustic metamaterials
Roca Cazorla, David; Pàmies Gómez, Teresa; Cante Terán, Juan Carlos; Lloberas Valls, Oriol; Oliver Olivella, Xavier (2020-04)
Article
Accés obertThe so called Locally Resonant Acoustic Metamaterials (LRAM) are a new kind of artificially engineered materials capable of attenuating acoustic waves. As the name suggests, this phenomenon occurs in the vicinity of internal ... -
Multiresonant Layered Acoustic Metamaterial (MLAM) solution for broadband low-frequency noise attenuation through double-peak sound transmission loss response
Roca Cazorla, David; Cante Terán, Juan Carlos; Lloberas Valls, Oriol; Pàmies Gómez, Teresa; Oliver Olivella, Xavier (Elsevier, 2021-08)
Article
Accés obertThe problem of noise control and attenuation is of interest in a broad range of applications, especially in the low-frequency range, below 1000 Hz. Acoustic metamaterials allow us to tackle this problem with solutions that ... -
Numerical tools for computational design of acoustic metamaterials
Roca Cazorla, David (Universitat Politècnica de Catalunya, 2020-09-07)
Tesi
Accés obertThe notion of metamaterials as artificially engineered structures designed to obtain specific material properties, typically unachievable in naturally occurring materials, has captured the attention of the scientific and ... -
Numerical tools for computational design of acoustic metamaterials
Roca Cazorla, David; Cante Terán, Juan Carlos; Lloberas Valls, Oriol; Oliver Olivella, Xavier (International Centre for Numerical Methods in Engineering (CIMNE), 2020)
Llibre
Accés obertThe notion of metamaterials as artificially engineered structures designed to obtain specific material properties, typically unachievable in naturally occurring materials, has captured the attention of the scientific and ... -
Optimal design of Multiresonant Layered Acoustic Metamaterials (MLAM) via a homogenization approach
Sal Anglada, Gaston; Yago Llamas, Daniel; Cante Terán, Juan Carlos; Oliver Olivella, Xavier; Roca Cazorla, David (Elsevier, 2023-10)
Article
Accés obertBroadband sound attenuation at low frequency ranges (below 500 Hz) has been a challenge in the acoustics field which cannot be solved, via conventional materials, unless impractical amounts of mass are employed. Multiresonant ...