Towards higher-order accurate mass lum** in explicit isogeometric analysis for structural dynamics

TH Nguyen, RR Hiemstra, S Eisenträger… - Computer Methods in …, 2023 - Elsevier
We present a mass lum** approach based on an isogeometric Petrov–Galerkin method
that preserves higher-order spatial accuracy in explicit dynamics calculations irrespective of …

[HTML][HTML] Critical time-step size analysis and mass scaling by ghost-penalty for immersogeometric explicit dynamics

SKF Stoter, SC Divi, EH van Brummelen… - Computer Methods in …, 2023 - Elsevier
In this article, we study the effect of small-cut elements on the critical time-step size in an
immersogeometric explicit dynamics context. We analyze different formulations for second …

[HTML][HTML] A comparison of smooth basis constructions for isogeometric analysis

HM Verhelst, P Weinmüller, A Mantzaflaris… - Computer Methods in …, 2024 - Elsevier
In order to perform isogeometric analysis with increased smoothness on complex domains,
trimming, variational coupling or unstructured spline methods can be used. The latter two …

[HTML][HTML] Outlier-free spline spaces for isogeometric discretizations of biharmonic and polyharmonic eigenvalue problems

C Manni, E Sande, H Speleers - Computer Methods in Applied Mechanics …, 2023 - Elsevier
We present outlier-free isogeometric Galerkin discretizations of eigenvalue problems related
to the biharmonic and the polyharmonic operator in the univariate setting. These are …

[HTML][HTML] Variationally consistent mass scaling for explicit time-integration schemes of lower-and higher-order finite element methods

SKF Stoter, TH Nguyen, RR Hiemstra… - Computer Methods in …, 2022 - Elsevier
In this paper, we propose a variationally consistent technique for decreasing the maximum
eigenfrequencies of structural dynamics related finite element formulations. Our approach is …

Nonlinear dynamic analysis of shear-and torsion-free rods using isogeometric discretization and outlier removal

TH Nguyen, BA Roccia, RR Hiemstra… - Computational …, 2025 - Springer
In this paper, we present a discrete formulation of nonlinear shear-and torsion-free rods
introduced by Gebhardt and Romero (Acta Mechanica 232 (10): 3825–3847, 2021) that …

Mass lum** and outlier removal strategies for complex geometries in isogeometric analysis

Y Voet, E Sande, A Buffa - Mathematics of Computation, 2025 - ams.org
Mass lum** techniques are commonly employed in explicit time integration schemes for
problems in structural dynamics and both avoid solving costly linear systems with the …

Robust mass lum** and outlier removal strategies in isogeometric analysis

YD Voet, E Sande, A Buffa - 2024 - infoscience.epfl.ch
Mass lum** techniques are commonly employed in explicit time integration schemes for
problems in structural dynamics and both avoid solving costly linear systems with the …

A locking-free isogeometric thin shell formulation based on higher order accurate local strain projection via approximate dual splines

TH Nguyen, RR Hiemstra, D Schillinger - arxiv preprint arxiv:2406.16685, 2024 - arxiv.org
We present a novel isogeometric discretization approach for the Kirchhoff-Love shell
formulation based on the Hellinger-Reissner variational principle. For mitigating membrane …