Acoustic transmission properties of pressurised and pre-stressed composite structures

Ampatzidis, Theofanis; Chronopoulos, Dimitrios

doi:10.1016/j.compstruct.2016.06.027

Cited by 10 publications

(5 citation statements)

References 31 publications

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“…Using these methods, researchers have the ability to predict the vibroacoustic and dynamic performance of several applications in relatively short times. Application examples are presented with composite panels and shells [9,10], structures with pressurised shells [11], and complex periodic structures [12,13,14,15]. Hussein et al [16] produced an extensive review of developments in band gap technology.…”

Section: Introductionmentioning

confidence: 99%

Band gap behaviour of optimal one-dimensional composite structures with an additive manufactured stiffener

Ampatzidis

Leach

Tuck

et al. 2018

Composites Part B: Engineering

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In this work, the banded behaviour of composite one-dimensional structures with an additive manufactured stiffener is examined. A finite element method is used to calculate the stiffness, mass and damping matrices, and periodic structure theory is used to obtain the wave propagation of one-dimensional structures.A multi-disciplinary design optimisation scheme is developed to achieve optimal banded behaviour and structural characteristics of the structures under investigation. Having acquired the optimal solution of the case study, a representative specimen is manufactured using a carbon fibre cured plate and additive manufactured nylon-based material structure. Experimental measurements of the dynamic performance of the hybrid composite structure are conducted using a laser vibrometer and electrodynamic shaker setup to validate the finite element model.

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Section: Introductionmentioning

confidence: 99%

Band gap behaviour of optimal one-dimensional composite structures with an additive manufactured stiffener

Ampatzidis

Leach

Tuck

et al. 2018

Composites Part B: Engineering

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“…Ampatzidis et al. [254] focused on the noise transmission characteristic of the pressurised and pre-stressed composite structures. Herewith, the WFE approach was used to explain the dispersion properties of two-dimensional layered and double-wall structures.…”

Section: Boundary Effectmentioning

confidence: 99%

Prediction of acoustic wave transmission features of the multilayered plate constructions: A review

Zarastvand

Ghassabi

Talebitooti

2021

Jnl of Sandwich Structures & Materials

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This study collects all of the existent papers in the field of acoustic transmission across multilayered plate constructions. Herewith, a comprehensive source is proposed wherein approximately 410 references are reviewed and described from the first [Formula: see text] to [Formula: see text]. In the first part, in addition to the presentation of a complete explanation about the importance of the acoustic analysis of these structures, appropriate formulations are also provided. Furthermore, an overview of the thematic correspondent is carried out. Since the type of material used in these constructions can be very important in sound insulation, the significance of this subject is remarked. The papers are then classified based on their acoustic excitation fields containing plane wave, diffuse, random, and point source. After analyzing the research approaches according to different environmental properties, the articles are ordered based on their boundaries as finite and infinite. To present reliable outcomes, it is necessary to investigate a proper theory proportional to the structure’s thickness. Herewith, this issue is also discussed in detail. The review is also expanded to focus on the different vibroacoustic solutions. Before concluding remarks, the authors' research works are presented wherein either optimization algorithms or control techniques improve the acoustic performance of these structures.

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“…Using these methods, researchers nowadays have the ability to predict the vibroacoustic and dynamic performance of several applications in relatively short times. Application examples are presented using composite panels and shells [9,10], structures with pressurised shells [11], and complex periodic structures [12,13,14,15].…”

Section: Introductionmentioning

confidence: 99%

Mid-frequency band gap performance of sandwich composites with unconventional core geometries

Ampatzidis

Chronopoulos

2019

Composite Structures

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In this work novel unconventional core architectures are presented which are able to induce flexural band gaps while not being detrimental for structural bending stiffness of the sandwich structures. Two different core schemes are examined with both of them exhibiting low-frequency stop bands. While unconventional, the designs of the core offer a novel solution which can be easily manufactured in high volume parts using two-dimensional automated cutting machine. A hybrid finite element and periodic structure theory scheme is employed for the calculation of the stiffness and mass matrices, and periodic structure theory is used to obtain the wave propagation of the beams. Having acquired the wave dispersion curves and the finite element analysis' results, two specimens are manufactured using carbon fibre cured plates and commercially available PVC foam as core material. Experimental measurements of the dynamic performance of the structures are conducted using a laser vibrometer and electrodynamic shaker setup.

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Acoustic transmission properties of pressurised and pre-stressed composite structures

Cited by 10 publications

References 31 publications

Band gap behaviour of optimal one-dimensional composite structures with an additive manufactured stiffener

Band gap behaviour of optimal one-dimensional composite structures with an additive manufactured stiffener

Prediction of acoustic wave transmission features of the multilayered plate constructions: A review

Mid-frequency band gap performance of sandwich composites with unconventional core geometries

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