Stability and conditioning of immersed finite element methods: analysis and remedies

F de Prenter, CV Verhoosel, EH van Brummelen… - … Methods in Engineering, 2023 - Springer
This review paper discusses the developments in immersed or unfitted finite element
methods over the past decade. The main focus is the analysis and the treatment of the …

Galerkin formulations of isogeometric shell analysis: Alleviating locking with Greville quadratures and higher-order elements

Z Zou, TJR Hughes, MA Scott, RA Sauer… - Computer Methods in …, 2021 - Elsevier
We propose new quadrature schemes that asymptotically require only four in-plane points
for Reissner–Mindlin shell elements and nine in-plane points for Kirchhoff–Love shell …

[PDF][PDF] The p-version of the finite element and finite cell methods

A Düster, E Rank, B Szabó - Encyclopedia of computational …, 2017 - researchgate.net
In the first part of this chapter the basic algorithmic structure and performance characteristics
of the p-version of the finite element method are surveyed with reference to elliptic problems …

Phase-field modeling of brittle fracture with multi-level hp-FEM and the finite cell method

S Nagaraja, M Elhaddad, M Ambati… - Computational …, 2019 - Springer
The difficulties in dealing with discontinuities related to a sharp crack are overcome in the
phase-field approach for fracture by modeling the crack as a diffusive object being described …

Non-negative moment fitting quadrature for cut finite elements and cells undergoing large deformations

W Garhuom, A Düster - Computational Mechanics, 2022 - Springer
Fictitious domain methods, such as the finite cell method, simplify the discretization of a
domain significantly. This is because the mesh does not need to conform to the domain of …

[HTML][HTML] Efficient CAD-integrated isogeometric analysis of trimmed solids

M Meßmer, T Teschemacher, LF Leidinger… - Computer Methods in …, 2022 - Elsevier
This publication presents a robust and efficient approach for fully CAD-integrated analyses
of solids, which aims to reduce the current modeling effort for static and transient problems …

Higher-order meshing of implicit geometries—Part I: Integration and interpolation in cut elements

TP Fries, S Omerović, D Schöllhammer… - Computer Methods in …, 2017 - Elsevier
An accurate implicit description of geometries is enabled by the level-set method. Level-set
data is given at the nodes of a higher-order background mesh and the interpolated zero …

Efficient and robust quadratures for isogeometric analysis: Reduced Gauss and Gauss–Greville rules

Z Zou, TJR Hughes, MA Scott, D Miao… - Computer Methods in …, 2022 - Elsevier
This work proposes two efficient quadrature rules, reduced Gauss quadrature and Gauss–
Greville quadrature, for isogeometric analysis. The rules are constructed to exactly integrate …

Surrogate modeling for interactive tunnel track design using the cut finite element method

HG Bui, BT Cao, S Freitag, K Hackl… - Engineering with …, 2023 - Springer
Abstract The Cut Finite Element Method (CutFEM) is recently shown to be a versatile
approach for tunnel construction modeling and settlement analysis. The CutFEM can …

[HTML][HTML] Octree-based integration scheme with merged sub-cells for the finite cell method: Application to non-linear problems in 3D

M Petö, W Garhuom, F Duvigneau… - Computer methods in …, 2022 - Elsevier
Fictitious domain methods, such as the Finite Cell Method (FCM), allow for an efficient and
accurate simulation of complex geometries by utilizing higher-order shape functions and an …