Zobrazeno 1 - 10
of 189
pro vyhledávání: '"Guoyong JIN"'
Publikováno v:
Zhongguo Jianchuan Yanjiu, Vol 17, Iss Supp1, Pp 10-18 (2022)
ObjectivesThis paper aims to solve the problem of the prediction and control of the bow sonar self-noise. MethodsA self-noise simulation model of the ship's sonar platform based on the entire ship is established by statistical energy analysis (SEA).
Externí odkaz:
https://doaj.org/article/7025c0b1d8d24c439ecfa1b4df65d895
Publikováno v:
Journal of Marine Science and Engineering, Vol 11, Iss 12, p 2373 (2023)
The acoustic absorption characteristics of anechoic coatings attached to the surface of underwater vehicles are closely related to their acoustic stealth. Owing to the essential property of local resonance, the narrow sound-absorption band cannot mee
Externí odkaz:
https://doaj.org/article/a590c4d8ecb349e9a53fdc9c65ba4120
Publikováno v:
Journal of Low Frequency Noise, Vibration and Active Control, Vol 41 (2022)
The underwater anechoic coating with local resonant units is an effective method to achieve low-frequency sound absorption. However, the structure obtained in this way is not satisfactory in the sound absorption effect of mid-high frequency bands. Ca
Externí odkaz:
https://doaj.org/article/7b96dcb4bc434f459f378ae042eba97a
Publikováno v:
Shock and Vibration, Vol 2022 (2022)
An analytical solution for the vibro-acoustic behavior analysis of a stiffened double panel-cavity coupled system is presented. Unlike existing methods, this method is flexible with parameter analysis and can simulate the elastic boundary conditions
Externí odkaz:
https://doaj.org/article/75f970b0fe3b4a2ab38a4693f7d1ada4
Publikováno v:
Results in Physics, Vol 31, Iss , Pp 104915- (2021)
The eigenmodes and vibro-acoustic responses for the box structural–acoustic coupling system composed of a box structure and an acoustic cavity are predicted using the energy principle and improved Fourier series. The improved Fourier series are ado
Externí odkaz:
https://doaj.org/article/c90bab6f6901463dbab1fd92179102d8
Publikováno v:
Results in Physics, Vol 12, Iss , Pp 132-142 (2019)
Although the conventional locally resonant acoustic metamaterials (LRAMs) have shown better sound absorption performance in the low frequency band, the effective frequency range of the sound absorption performance is quite narrow relatively. To overc
Externí odkaz:
https://doaj.org/article/5d008da808374d138071afa61edf1524
Publikováno v:
Shock and Vibration, Vol 2021 (2021)
A theoretical solution method for the in-plane vibration characteristics of the plate with cutouts is proposed in this paper. The energy principle in conjunction with the Rayleigh–Ritz solution technique is adopted for the theoretical modeling of t
Externí odkaz:
https://doaj.org/article/04db8d90bdf84427a4740056501ca4c1
Publikováno v:
Shock and Vibration, Vol 2021 (2021)
This paper presents a dynamic stiffness formulation for the free vibration analysis of truncated conical shell and its combinations with uniform boundary restraints. The displacement fields are expressed as power series, and the coefficients of the s
Externí odkaz:
https://doaj.org/article/a3450af3c8a64ba6940686993a4ca12d
Publikováno v:
Results in Physics, Vol 16, Iss , Pp 102889- (2020)
An isogeometric numerical procedure based on non-uniform rational B-splines is applied to solve the free vibration of carbon nanotubes reinforced and functionally graded material sector cylindrical shells. A typical isogeometric analysis cylindrical
Externí odkaz:
https://doaj.org/article/148a2b25e796458291435b2a54a2a3cd
Publikováno v:
Results in Physics, Vol 11, Iss , Pp 712-725 (2018)
This paper presents the natural vibration and transient response of functionally graded piezoelectric materials (FGPMs) curved beam with a numerical method. The unknown fields, geometry and material properties are described by the isogeometric method
Externí odkaz:
https://doaj.org/article/24269403330f4487b794839fc85230dd