Accuracy of the Kirchhoff-approximation and Kirchhoff-ray-mode fish swimbladder acoustic scattering models. [PDF]
PLoS ONE, 2013 The acoustic backscatter from pressure release prolate spheroids and a three-dimensional representation of a fish swimbladder (Chilean jack mackerel, Trachurus symmetricus murphyi) was calculated using four target strength models (Kirchhoff-approximation,
Gavin J Macaulay +4 more
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A Study on the Model of Detecting the Liquid Level of Sealed Containers Based on Kirchhoff Approximation Theory [PDF]
Sensors, 2017 By simulating the sound field of a round piston transducer with the Kirchhoff integral theorem and analyzing the shape of ultrasound beams and propagation characteristics in a metal container wall, this study presents a model for calculating the echo ...
Bin Zhang +4 more
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Defence Technology, 2022 A numerical triangulation and transformation into the time domain of a Kirchhoff approximation (KA) method is proposed for the modeling of bistatic scattering from an underwater non-penetrable target. The time domain solution in this approximation can be
Bin Wang +5 more
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Sparse Constrained Least-Squares Reverse Time Migration Based on Kirchhoff Approximation
Frontiers in Earth Science, 2021 Least-squares reverse time migration (LSRTM) is powerful for imaging complex geological structures. Most researches are based on Born modeling operator with the assumption of small perturbation.
Xu Hong-Qiao +10 more
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Dynamic stability of anisotropic fiber-reinforced plate [PDF]
E3S Web of Conferences, 2021 The dynamic stability problem of an anisotropic fiber-reinforced plate under increasing compressing load is considered in a geometrically nonlinear formulation using the Kirchhoff-Love’s shell theory.
Eshmatov Bakhtiyor +3 more
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Research on the Acoustic Scattering Characteristics of Multi-Sections Conning Tower Geometries in Monostatic Configuration [PDF]
Archives of Acoustics, 2022 The overall acoustic echo of a submarine is greatly dependent on the conning tower. For enhancing the acoustic stealth performance of a submarine, it is necessary to research an innovative design scheme of the conning tower to reduce its target strength (
Lin-Jiang Han +4 more
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Acoustic scattering properties of underwater corner reflector complexes
Zhongguo Jianchuan Yanjiu, 2023 ObjectiveIn order to further improve the speed and accuracy of calculating the acoustic scattering fields of underwater concave targets, the acoustic scattering characteristics of underwater corner reflector complexes are studied.
Pengcheng CHAI +4 more
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Ground state solution for a class of supercritical nonlocal equations with variable exponent
Electronic Journal of Qualitative Theory of Differential Equations, 2021 In this paper, we obtain the existence of positive critical point with least energy for a class of functionals involving nonlocal and supercritical variable exponent nonlinearities by applying the variational method and approximation techniques. We apply
Xiaojing Feng
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Comparison of the Von Kármán and Kirchhoff models for the post-buckling and vibrations of elastic beams [PDF]
Journal of Theoretical, Computational and Applied Mechanics, 2021 We compare different models describing the buckling, post-buckling and vibrations of elastic beams in the plane. Focus is put on the first buckled equilibrium solution and the first two vibration modes around it.
Sébastien Neukirch +3 more
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A fast algorithm to compute shadow areas for Kirchhoff approximation-based underwater acoustic scattering simulation [PDF]
MATEC Web of Conferences, 2019 Kirchhoff approximation method is a fast underwater acoustic scattering numerical method which adaptive to engineering application. Shadow areas calculation is one of the most important factors for computational efficiency.
Jia Lianhui, Zhang Yang, Li Guijuan
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