A coupled FE-Meshfree triangular element for acoustic radiation problems

W Li, Q Zhang, Q Gui, Y Chai - International Journal of …, 2021 - World Scientific
To improve the accuracy of the standard finite element (FE) solutions for acoustic radiation
computation, this work presents the coupling of a radial point interpolation method (RPIM) …

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 …

A truly meshfree method for solving acoustic problems using local weak form and radial basis functions

X You, W Li, Y Chai - Applied Mathematics and Computation, 2020 - Elsevier
It has been known that numerical solutions to Helmholtz problems obtained using several
numerical methodologies (eg finite element approach) are always plagued by the pollution …

On generation of lumped mass matrices in partition of unity based methods

H Zheng, Y Yang - International Journal for Numerical Methods …, 2017 - Wiley Online Library
The partition of unity based methods, such as the extended finite element method and the
numerical manifold method, are able to construct global functions that accurately reflect local …

A node-based partly smoothed point interpolation method (NPS-PIM) for dynamic analysis of solids

G Zhang, H Lu, D Yu, Z Bao, H Wang - Engineering analysis with boundary …, 2018 - Elsevier
Traditional finite element method (FEM) using linear triangular element is overly-stiff and
generally natural frequencies calculated would be too high. The newly developed node …

An efficient algorithm to analyze wave propagation in fluid/solid and solid/fluid phononic crystals

E Li, ZC He, G Wang, GR Liu - Computer Methods in Applied Mechanics …, 2018 - Elsevier
The paper presents an efficient and accurate algorithm to analyze the fluid/solid and
solid/fluid phononic crystals (PCs) with fluid structure interaction (FSI). In the proposed mass …

A finite element method with cover functions for underwater acoustic propagation problems

Q Gui, G Zhang, Y Chai, W Li - Ocean Engineering, 2022 - Elsevier
To improve the performance of the classical finite element method (FEM) in acoustic
analyses, in this work the interpolation cover functions are incorporated into the standard …

Dispersion reduction for the wave propagation problems using a coupled “FE-Meshfree” triangular element

Y Chai, X You, W Li - International Journal of Computational …, 2020 - World Scientific
As is known to all, there always exists the numerical dispersive effects of the standard finite
element (FE) for the wave propagation problems and the corresponding FE solutions are …

Analysis of the interior acoustic wave propagation problems using the modified radial point interpolation method (M-RPIM)

J Qu, S Dang, Y Li, Y Chai - Engineering Analysis with Boundary Elements, 2022 - Elsevier
Although the radial point interpolation method (RPIM), which is a typical meshless numerical
technique, usually behaves much better than the conventional FEM in addressing the …

[HTML][HTML] Analysis of three-dimensional interior acoustic fields by using the localized method of fundamental solutions

W Qu, CM Fan, Y Gu, F Wang - Applied Mathematical Modelling, 2019 - Elsevier
The traditional method of fundamental solutions has a full interpolation matrix, and thus its
solution is computationally expensive, especially for large-scale problems with complicated …