Results 21 to 30 of about 198 (145)
Localized MFS for three‐dimensional acoustic inverse problems on complicated domains
International Journal of Mechanical System Dynamics, Volume 2, Issue 1, Page 143-152, March 2022., 2022 Abstract This paper proposes a semi‐analytical and local meshless collocation method, the localized method of fundamental solutions (LMFS), to address three‐dimensional (3D) acoustic inverse problems in complex domains. The proposed approach is a recently developed numerical scheme with the potential of being mathematically simple, numerically accurate,
Zengtao Chen +3 more
wiley +1 more source
Energy‐Based Aerodynamic Analysis on the Blended‐Wing‐Body Aircraft with Boundary Layer Ingestion
International Journal of Aerospace Engineering, Volume 2022, Issue 1, 2022., 2022 This study is aimed at evaluating the energy saving benefit and its limitation of the boundary layer ingestion (BLI) applied to a transonic blended‐wing‐body (BWB) aircraft. The power balance method is adopted in the aerodynamic performance analysis of the aircraft.
Wenyuan Zhao +3 more
wiley +1 more source
For Most Frequencies, Strong Trapping Has a Weak Effect in Frequency‐Domain Scattering
Communications on Pure and Applied Mathematics, Volume 74, Issue 10, Page 2025-2063, October 2021., 2021 It is well‐known that when the geometry and/or coefficients allow stable trapped rays, the outgoing solution operator of the Helmholtz equation grows exponentially through a sequence of real frequencies tending to infinity. In this paper we show that, even in the presence of the strongest possible trapping, if a set of frequencies of arbitrarily small ...
David Lafontaine +2 more
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Mathematical Problems in Engineering, Volume 2021, Issue 1, 2021., 2021 A new mixed four‐node quadrilateral element (MiQ4) is established in this paper to investigate functionally graded material (FGM) plates with variable thickness. The proposed element is developed based on the first‐order shear deformation and mixed finite element technique, so the new element does not need any selective or reduced numerical integration.
Pham Van Vinh, Francisco J. Martos
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FEM with Trefftz trial functions on polyhedral elements
Journal of Computational and Applied Mathematics, 2014 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Sergej Rjasanow, Steffen Weißer
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Trefftz discontinuous Galerkin basis functions for a class of Friedrichs systems coming from linear transport [PDF]
Advances in Computational Mathematics, 2020 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Buet, Christophe +2 more
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Trefftz Functions for Nonlocal Electrostatics
CoRR, 2020 17 pages, 6 figures.
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A Mixed Stress/Displacement Approach Model of Homogeneous Shells for Elastodynamic Problems
Mathematical Problems in Engineering, Volume 2020, Issue 1, 2020., 2020 This paper presents the development of a model of homogeneous, moderately thick shells for elastodynamic problems. The model is obtained by adapting and modifying SAM‐H model (stress approach model of homogeneous shells) developed by Domínguez Alvarado and Díaz in (2018) for static problems.
Axel Fernando Domínguez Alvarado +2 more
wiley +1 more source
Shock and Vibration, Volume 2020, Issue 1, 2020., 2020 Spectral methods have previously been applied to analyze a multitude of vibration and acoustic problems due to their high computational efficiency. However, their application to interior structural acoustics systems has been limited to the analysis of a single plate coupled to a fluid‐filled cavity. In this work, a general multidomain spectral approach
Zhenguo Zhang +4 more
wiley +1 more source
First- and second-order sensitivity analysis schemes by collocation-type Trefftz method
Computer Assisted Methods in Engineering and Science, 2023 This paper presents the boundary-type schemes of the first- and the second-order sensitivity analyses by Trefftz method. In the Trefftz method, physical quantities are approximated by the superposition of the T-complete functions satisfying the ...
Eisuke Kita, Norio Kamiya, Youichi Ikeda
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