Journal ArticleDOI
Directivity-Based Passive Barrier for Local Control of Low-Frequency Noise
Gyani Shankar Sharma,Abhijit Sarkar +1 more
- Vol. 26, Iss: 04, pp 1850012
TLDR
In this article, the authors proposed a novel concept of local mitigation of the transmitted transmission loss offered by a noise barrier separating two acoustic spaces in the low-frequency range, which can improve the transmission loss.Abstract:
This work concerns with improving the transmission loss offered by a noise barrier separating two acoustic spaces in the low-frequency range. A novel concept of local mitigation of the transmitted ...read more
Citations
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Journal ArticleDOI
Buckling Sensitivity of Tow-Steered Plates Subjected to Multiscale Defects by High-Order Finite Elements and Polynomial Chaos Expansion.
TL;DR: In this paper, the buckling response of variable stiffness composite (VSC) plates subjected to spatially varying fiber volume content as well as fibre misalignments, yielding a multiscale sensitivity analysis.
Journal ArticleDOI
A theoretical analysis on the active structural acoustical control of a vibration isolation system with a coupled plate-shell foundation
TL;DR: In this article, an analytical description of active structural acoustical control of vibration isolation with a plate-shell coupled foundation is presented, which is composed of a two-stage isolation and a flexible supporting plate coupled with an elastic cylindrical shell, which are connected via passive active mounts.
Journal ArticleDOI
Free Vibration Analysis of a Graphene-Reinforced Porous Composite Plate with Different Boundary Conditions
TL;DR: In this article, a free vibration porous composite plate is constructed with a multi-layer model in a metal matrix containing uniform or non-uniformly distributed open-cell internal pores.
Journal ArticleDOI
Broadband Vibration Attenuation Achieved by 2D Elasto-Acoustic Metamaterial Plates with Rainbow Stepped Resonators
TL;DR: In this article, the influence of non-periodic rainbow resonators on the vibration attenuation of two-dimensional metamaterial plates is investigated and compared with periodic metammaterial plates.
Journal ArticleDOI
Nonlocal Vibration Analysis of a Nonuniform Carbon Nanotube with Elastic Constraints and an Attached Mass.
TL;DR: In this paper, the free vibration of a tapered beam modeling non-uniform single-walled carbon nanotubes was considered, and the differential quadrature method (DQM) was applied to compute the natural frequencies.
References
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Journal ArticleDOI
Nonlinear dynamics of a three-beam structure with attached mass and three-mode interactions
Fengxia Wang,Anil K. Bajaj +1 more
TL;DR: In this paper, a three-beam structural system with attached mass is considered, and its multidegree-of-freedom discretized model for the structure undergoing planar motions is carefully studied.
Journal ArticleDOI
Development of a directivity-controlled piezoelectric transducer for sound reproduction
Magella Bédard,Alain Berry +1 more
TL;DR: In this article, a transducer consisting of four piezoelectric elemental sources made from curved PVDF films is used to generate a target directivity pattern in the horizontal plane, in the frequency range of 5-20 kHz.
Journal ArticleDOI
The directivity of railway noise at different speeds
TL;DR: In this paper, a model of perpendicular dipole pair is proposed to interpret the measurement specified directivity characters of wheel/rail radiation, which naturally explains why a vibrating railway wheel does not present dipole directivity character and why rail radiation is of different vertical and horizontal directivities characters.
Journal ArticleDOI
Maximization of the directivity ratio with the desired audible gain level for broadband design of near field loudspeaker arrays
TL;DR: In this paper, a broadband directivity control is proposed for multi-objective optimization, which maximizes the directivity with the desired gain, where both the directivities and the gain are commonly used array performance measures.
Journal ArticleDOI
Influence of source directivity on noise levels in industrial halls: Simulation and experiments
TL;DR: In this article, the directivities of three wood-working machines have been characterized with a simple and fast acoustical intensity mapping which meets the constraints of industrial areas, and its influence on the noise field in industrial halls can be assessed.