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 …
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 …
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 …
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
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 …
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
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 …
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
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 …
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 …
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 …
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
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 …
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
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 …
time domain using an explicit time integration scheme. Plane wave enrichment functions are …