Results 11 to 20 of about 3,427 (254)
Static stability of higher order functionally graded beam under variable axial load
Alexandria Engineering Journal, 2020 This article investigates effects of axial load distribution on buckling loads and their modes of functionally graded (FG) beams including a shear effect for the first time, since all previous studies focused on constant axial load.
A. Melaibari +3 more
doaj +1 more source
Model Test and Back Analysis of Shield Tunnel Load Distribution in Soft Clay
Advances in Materials Science and Engineering, 2021 Combined with the soft clay layer of Foshan metro, a back-analysis method combining model test and numerical simulation is developed. First, the similitude criterion for the model used in this study was derived from similarity theory and elasticity ...
Haoshuang Niu +3 more
doaj +1 more source
Mathematical modeling of an optimal oncotherapy for malignant tumors [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2021 The paper presents a mathematical model of the optimal treatment for malignant neoplasms. The neoplasm is considered as a distributed parameter object. The scheme for an optimal oncotherapy using a system of partial differential equations of parabolic ...
Igor A. Narkevich +3 more
doaj +1 more source
Analysis of black hole solutions in parabolic class using neural networks
European Physical Journal C: Particles and Fields, 2023 In this paper, we introduce a numerical method based on Artificial Neural Networks (ANNs) for the analysis of black hole solutions to the Einstein-axion-dilaton system in a high dimensional parabolic class.
Ehsan Hatefi +2 more
doaj +1 more source
Uniform stress field inside a non-parabolic open inhomogeneity interacting with a mode III crack
Archives of Mechanics, 2021 Using conformal mapping techniques, analytic continuation and the theory of Cauchy singular integral equations, we prove that a non-parabolic open inhomogeneity embedded in an elastic matrix subjected to a uniform remote anti-plane stress nevertheless ...
X. Wang, P. Schiavone
doaj +1 more source
Estimating Sound Exposure Levels Due to a Broadband Source over Large Areas of Shallow Sea
Journal of Marine Science and Engineering, 2022 3D sound propagation modeling in the context of acoustic noise monitoring problems is considered. A technique of effective source spectrum reconstruction from a reference single-hydrophone measurement is discussed, and the procedure of simulation of ...
Denis Manul’chev +3 more
doaj +1 more source
Journal of Marine Science and Engineering, 2021 Numerous sound propagation models in underwater acoustics are based on the representation of a sound field in the form of a decomposition over normal modes.
Alena Zakharenko +2 more
doaj +1 more source
Journal of Marine Science and Engineering, 2021 Three-Dimensional (3-D) sound propagation in a shallow-water waveguide with a constant depth and inhomogeneous bottom is studied through numerical simulations.
Andrey Lunkov +2 more
doaj +1 more source
A Chebyshev Spectral Method for Normal Mode and Parabolic Equation Models in Underwater Acoustics [PDF]
Mathematical Problems in Engineering, 2020 In this paper, the Chebyshev spectral method is used to solve the normal mode and parabolic equation models of underwater acoustic propagation, and the results of the Chebyshev spectral method and the traditional finite difference method are compared for an ideal fluid waveguide with a constant sound velocity and an ideal fluid waveguide with a deep ...
Houwang Tu +5 more
openaire +1 more source
The collision dynamics between double-hump solitons in two mode optical fibers
Results in Physics, 2021 In this paper, the coupled Manakov equations with variable coefficients, governing the orthogonally polarized pulses transmission in two mode optical fibers, are studied via the Hirota method. The double-hump one- and two-soliton solutions of the Manakov
Weitian Yu +3 more
doaj +1 more source