The enriched quadrilateral overlapping finite elements for time-harmonic acoustics

Q Gui, W Li, Y Chai - Applied Mathematics and Computation, 2023 - Elsevier
The pronounced numerical dispersions and numerical anisotropy make solutions from the
finite element model using low-order elements unreliable for the time-harmonic acoustic …

The extrinsic enriched finite element method with appropriate enrichment functions for the Helmholtz equation

Y Chai, K Huang, S Wang, Z Xiang, G Zhang - Mathematics, 2023 - mdpi.com
The traditional finite element method (FEM) could only provide acceptable numerical
solutions for the Helmholtz equation in the relatively small wave number range due to …

The edge-based smoothed FEM with ρ∞-Bathe implicit temporal discretization scheme for the analyses of underwater wave propagation problems

Y Chai, S Wang, Y Wang, W Li, K Huang, Q Zhang - Ocean Engineering, 2023 - Elsevier
The underwater acoustic wave propagation problem is an important issue in ocean
engineering field. The classical finite element approach with edge-based smoothed gradient …

The meshfree radial point interpolation method (RPIM) for wave propagation dynamics in non-homogeneous media

C Liu, S Min, Y Pang, Y Chai - Mathematics, 2023 - mdpi.com
This work presents a novel simulation approach to couple the meshfree radial point
interpolation method (RPIM) with the implicit direct time integration method for the transient …

Meshless generalized finite difference method for two-and three-dimensional transient elastodynamic analysis

W Sun, W Qu, Y Gu, S Zhao - Engineering Analysis with Boundary …, 2023 - Elsevier
In this paper, a meshless collocation method is introduced for two-dimensional (2D) and
three-dimensional (3D) transient elastodynamic problems by applying the generalized finite …

Improved modal analyses using the novel quadrilateral overlapping elements

Q Gui, W Li, Y Chai - Computers & Mathematics with Applications, 2024 - Elsevier
In this work, the novel quadrilateral overlapping element incorporated with the harmonic
trigonometric functions is presented to reduce the efforts in mesh division for modal analysis …

A fast singular boundary method for the acoustic design sensitivity analysis of arbitrary two-and three-dimensional structures

L Lan, S Cheng, X Sun, W Li, C Yang, F Wang - Mathematics, 2022 - mdpi.com
This paper proposes a fast meshless scheme for acoustic sensitivity analysis by using the
Burton–Miller-type singular boundary method (BM-SBM) and recursive skeletonization …

Acoustic sensitivity analysis for 3D structure with constant cross-section using 2.5 D singular boundary method

X Wei, X Cheng, D Chen, S Chen, H Zheng… - Engineering Analysis with …, 2023 - Elsevier
Abstract In this paper, a 2.5 D singular boundary method (SBM) in conjunction with the direct
differentiation method (DDM) and adjoint variable method (AVM) are formulated for the …

A boundary point interpolation method for acoustic problems with particular emphasis on the calculation of Cauchy principal value integrals

L Chen, X Li - Computers & Structures, 2024 - Elsevier
A boundary point interpolation method (BPIM) is presented in this paper for numerical
solving acoustic problems. The BPIM is a boundary-type meshless method that combines …

Transient analyses of underwater acoustic propagation with the modified meshfree radial point interpolation method and newmark time integration techniques

H Xue, X Zhang, J Cheng - Ocean Engineering, 2024 - Elsevier
Underwater acoustic propagation plays a very important role in underwater communication
and ocean engineering field. The radial point interpolation method (RPIM) is an effective …