Multi-level hp-adaptivity: high-order mesh adaptivity without the difficulties of constraining hanging nodes

N Zander, T Bog, S Kollmannsberger… - Computational …, 2015 - Springer
The implementation of hp hp-adaptivity is challenging as hanging nodes, edges, and faces
have to be constrained to ensure compatibility of the shape functions. For this reason, most …

Theoretical and numerical investigation of the finite cell method

M Dauge, A Düster, E Rank - Journal of Scientific Computing, 2015 - Springer
We present a detailed analysis of the convergence properties of the finite cell method which
is a fictitious domain approach based on high order finite elements. It is proved that …

Finite and spectral cell method for wave propagation in heterogeneous materials

M Joulaian, S Duczek, U Gabbert, A Düster - Computational Mechanics, 2014 - Springer
In the current paper we present a fast, reliable technique for simulating wave propagation in
complex structures made of heterogeneous materials. The proposed approach, the spectral …

A moment-fitted extended spectral cell method for structural health monitoring applications

S Nicoli, K Agathos, P Kudela, E Chatzi - Applied Sciences, 2023 - mdpi.com
The spectral cell method has been shown as an efficient tool for performing dynamic
analyses over complex domains. Its good performance can be attributed to the combination …

On variationally consistent versus heuristic mass formulations in cut and extended finite element methods

S Nicoli, K Agathos, E Chatzi - Computer Methods in Applied Mechanics …, 2024 - Elsevier
While performing explicit dynamic analyses in a finite element context, engineers must often
balance the accuracy and robustness of a model against the computational savings offered …

[HTML][HTML] From geometric design to numerical analysis: a direct approach using the finite cell method on constructive solid geometry

B Wassermann, S Kollmannsberger, T Bog… - … & Mathematics with …, 2017 - Elsevier
During the last ten years, increasing efforts were made to improve and simplify the process
from Computer Aided Design (CAD) modeling to a numerical simulation. It has been shown …

FCMLab: A finite cell research toolbox for MATLAB

N Zander, T Bog, M Elhaddad, R Espinoza, H Hu… - … in engineering software, 2014 - Elsevier
Abstract The recently introduced Finite Cell Method combines the fictitious domain idea with
the benefits of high-order finite elements. Although previous publications demonstrated the …

Efficient integration method for fictitious domain approaches

S Duczek, U Gabbert - Computational Mechanics, 2015 - Springer
In the current article, we present an efficient and accurate numerical method for the
integration of the system matrices in fictitious domain approaches such as the finite cell …

The finite and spectral cell methods for smart structure applications: transient analysis

S Duczek, S Liefold, U Gabbert - Acta Mechanica, 2015 - Springer
This article introduces a robust and efficient numerical tool that is well suited for the
simulation of ultrasonic guided waves and can be especially helpful when dealing with …

The finite cell method for polygonal meshes: poly-FCM

S Duczek, U Gabbert - Computational Mechanics, 2016 - Springer
In the current article, we extend the two-dimensional version of the finite cell method (FCM),
which has so far only been used for structured quadrilateral meshes, to unstructured …