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Acoustic Response of an Isotropic Beam Under Axially Variable Loads Using Ritz and Rayleigh Integral Methods [PDF]

open access: yesArchives of Acoustics, 2022
Vibro-acoustic response of an isotropic beam under the action of variable axial loads (VALs), is presented in the study. Effects of six different types of VALs and three types of end conditions on buckling, free vibration and sound radiation ...
Somi Naidu Balireddy   +3 more
doaj   +1 more source

Simulation Analysis of Acoustic Radiation from Force Excitation of Foam-Filled Stiffened Sandwich Panels

open access: yesApplied Sciences, 2023
To tackle the influence of foam filling on the sound radiation performance of reinforced sandwich panels, this study employs a combined approach of experiments and simulations to investigate the factors that impact the sound radiation performance in the ...
Bin Li   +5 more
doaj   +1 more source

Design of constrained-layer damping on plates to sound radiation based on isogeometric analysis and non-negative intensity

open access: yesFrontiers in Physics, 2023
Non-negative intensity (NNI) is a quantity which avoids near-field cancellation effects in sound intensity and provides direct visualization of the surface contributions to the radiated sound power.
Xinyan Zhang, Yanming Xu, Yanming Xu
doaj   +1 more source

Use of the Normalized Design Parameters for Designing a Strip Speaker Operated by the Traveling-Wave Control Method

open access: yesIEEE Access, 2022
A strip speaker is the simplified panel speaker adopting a thin beam as the radiator, which is operated under the traveling-wave control method (TCM) with three actuators. The structural resonances are suppressed fundamentally by nullifying the reflected
Ki-Ho Lee, Jeong-Guon Ih
doaj   +1 more source

Sound Enhancement of Orthotropic Sound Radiation Plates Using Line Loads and Considering Resonance Characteristics

open access: yesAcoustics, 2021
A new vibro-acoustic method is presented to analyze the sound radiation behavior of orthotropic panel-form sound radiators using strip-type exciters to exert line loads to the panels for sound radiation.
Ahmad Nayan, Tai Yan Kam
doaj   +1 more source

Prediction of Sound Radiation from Submerged Cylindrical Shell Based on Dominant Modes

open access: yesApplied Sciences, 2020
A sound radiation calculation method by using dominant modes is proposed to predict the sound radiation from a cylindrical shell. This method can provide an effective way to quickly predict the sound radiation of the structure by using as few ...
Chao Zhang   +4 more
doaj   +1 more source

An analysis of low-frequency propeller vibration and sound radiation characteristics: The Jellyfish effect

open access: yesZhongguo Jianchuan Yanjiu, 2020
Objectives Arousing the "Jellyfish mode" of a propeller can lead to strong low-frequency, narrow band sound radiation. On this basis, the second sound radiation mechanism of the "Jellyfish mode" has been investigated.
WU Chongjian   +4 more
doaj   +1 more source

Analytical Investigation of Sound Radiation from Functionally Graded Thin Plates Based on Elemental Radiator Approach and Physical Neutral Surface

open access: yesApplied Sciences, 2022
This paper analyzes the sound radiation behavior of a clamped thin, functionally graded material plate using the classical plate theory and Rayleigh Integral with the elemental radiator approach.
Baij Nath Singh   +5 more
doaj   +1 more source

Radiation Sounds [PDF]

open access: yes, 2021
On March 1, 1954, the US military detonated “Castle Bravo,” its most powerful nuclear bomb, at Bikini Atoll in the Marshall Islands. Two days later, the US military evacuated the Marshallese to a nearby atoll where they became part of a classified study, without their consent, on the effects of radiation on humans.
openaire   +3 more sources

A Method for Predicting Radiated Acoustic Field in Shallow Sea Based on Wave Superposition and Ray

open access: yesApplied Sciences, 2020
The traditional free-space and half-space analysis method ignore the reflection of the upper and lower boundaries of shallow sea and are not suitable for analyzing shallow sea problems especially at high frequency.
Chao Zhang   +3 more
doaj   +1 more source

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