A finite element method enriched for wave propagation problems

S Ham, KJ Bathe - Computers & structures, 2012 - Elsevier
An enriched finite element method is presented to solve various wave propagation
problems. The proposed method is an extension of the procedure introduced by Kohno …

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 …

Pollution studies for high order isogeometric analysis and finite element for acoustic problems

GC Diwan, MS Mohamed - Computer Methods in Applied Mechanics and …, 2019 - Elsevier
It is well known that Galerkin finite element methods suffer from pollution error when solving
wave problems. To reduce the pollution impact on the solution different approaches were …

[HTML][HTML] High-order finite elements for the solution of Helmholtz problems

K Christodoulou, O Laghrouche, MS Mohamed… - Computers & …, 2017 - Elsevier
In this paper, two high-order finite element models are investigated for the solution of two-
dimensional wave problems governed by the Helmholtz equation. Plane wave enriched …

Partition of unity finite element method for the modelling of acoustic black hole wedges

T Zhou, JD Chazot, E Perrey-Debain… - Journal of Sound and …, 2020 - Elsevier
Abstract The Acoustic Black Hole (ABH) phenomenon can be exploited to manipulate and
mitigate flexural wave propagation in thin-walled structures. ABH structures feature unique …

A partition of unity finite element method for three-dimensional transient diffusion problems with sharp gradients

M Malek, N Izem, MS Mohamed, M Seaid… - Journal of …, 2019 - Elsevier
An efficient partition of unity finite element method for three-dimensional transient diffusion
problems is presented. A class of multiple exponential functions independent of time …

Overview of the discontinuous enrichment method, the ultra‐weak variational formulation, and the partition of unity method for acoustic scattering in the medium …

D Wang, R Tezaur, J Toivanen… - International Journal for …, 2012 - Wiley Online Library
The efficient finite element discretization of the Helmholtz equation becomes challenging in
the medium frequency regime because of numerical dispersion, or what is often referred to …

A partition of unity FEM for time‐dependent diffusion problems using multiple enrichment functions

M Shadi Mohamed, M Seaid… - International Journal …, 2013 - Wiley Online Library
An enriched partition of unity FEM is developed to solve time‐dependent diffusion problems.
In the present formulation, multiple exponential functions describing the spatial and temporal …

Some numerical aspects of the PUFEM for efficient solution of 2D Helmholtz problems

MS Mohamed, O Laghrouche, A El-Kacimi - Computers & structures, 2010 - Elsevier
The Partition of Unity Finite Element Method is used to solve wave scattering problems
governed by the Helmholtz equation, involving one or more scatterers, in two dimensions …

[HTML][HTML] Explicit time integration with lumped mass matrix for enriched finite elements solution of time domain wave problems

M Drolia, MS Mohamed, O Laghrouche, M Seaid… - Applied Mathematical …, 2020 - Elsevier
We present a partition of unity finite element method for wave propagation problems in the
time domain using an explicit time integration scheme. Plane wave enrichment functions are …