Results 21 to 30 of about 2,175,809 (315)
Zhongguo Jianchuan Yanjiu, 2023 ObjectiveThis paper aims to study the characteristics and calculation method of the vibration and sound radiation of single ring-stiffened cylindrical shells with porous fiber composite materials installed in the inner wall under acoustic excitation ...
Xinmei YANG +3 more
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Vibration and Sound Radiation of a Plate [PDF]
The Journal of the Acoustical Society of America, 1973 Because of resonances, plates are acoustically soft. The experimental evaluation of the acoustic properties of plates is difficult since they are usually supported at points which act to clamp the plate. To eliminate this, a plate was placed on a cushion of open-cell plastic foam, and the velocity amplitude due to a point force was determined with a ...
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Piano Soundboard Analysis at Radiated Sound
Periodica Polytechnica Electrical Engineering and Computer Science, 2023 The piano is a complex musical instrument consisting of several components influencing vibration and sound production. By understanding the sound production mechanism virtual instruments can be created (physics-based sound synthesis) and the design and manufacturing of soundboards can be supported (virtual prototyping).
Dóra Jenei-Kulcsár, Péter Fiala
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On the Sound Radiation From a Circular Hatchway [PDF]
International Journal of Occupational Safety and Ergonomics, 2009 Low-frequency sound radiation from vibrating plates is a practical problem often found in engineering applications. In this article, the sound radiation from a circular hatchway is examined using a discrete approach based in the acoustic resistance matrix.
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EXPERIMENTAL STUDIES OF NOISE AND VIBRATION IN HYDROELECTROPULSE PRESS WORKING AREA
Advanced Engineering Research, 2013 The experiments supporting theoretical conclusions on the process regularities of the vibration excitation and noise generation are considered. As part of the study, part blanks, such as thin plates and of a complex profile, were machined on the presses ...
Vitaly Victorovich Kozlyuk +1 more
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Acoustics, 2023 Spatially dense operative deflection shapes and receptances, acquired in broad frequency bands, increase the detail in the spatial and frequency domains of the responses of parts in actual dynamic loading, manufacturing and mounting conditions. This work
Alessandro Zanarini
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Nihon Kikai Gakkai ronbunshu, 2014 This paper describes a parameter-free free-form optimization method for reducing the radiated noise from vibrating shell structures in an open space. Squared sound pressure, which is evaluated by solving fully coupled shell-acoustic interaction system ...
Kensuke SHIMOIDE, Masatoshi SHIMODA
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A Study on Sound Radiation Characteristics of Slim Speaker System
IEEE Access, 2023 For ultra-thin TVs, slim speaker enclosures are usually used to reduce the thickness. These slim speaker systems can suffer from acoustic problems such as poor radiated sound performance in a specific frequency range.
Joon-Yeon Park, Je-Heon Han
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Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
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Underwater Radiated Noise Prediction Method of Cabin Structures under Hybrid Excitation
Applied Sciences, 2023 Aiming at the engineering limitations of traditional ship vibration online monitoring and noise prediction methods, this paper proposes a method for online monitoring and underwater radiation noise prediction of cabin structures’ vibration and noise ...
Qiang Guo +3 more
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