[HTML][HTML] Robust numerical integration on curved polyhedra based on folded decompositions

P Antolin, X Wei, A Buffa - Computer Methods in Applied Mechanics and …, 2022 - Elsevier
We present a novel method to perform numerical integration over curved polyhedra
enclosed by high-order parametric surfaces. Such a polyhedron is first decomposed into a …

High-order quadrature on multi-component domains implicitly defined by multivariate polynomials

RI Saye - Journal of Computational Physics, 2022 - Elsevier
A high-order quadrature algorithm is presented for computing integrals over curved surfaces
and volumes whose geometry is implicitly defined by the level sets of (one or more) …

[HTML][HTML] Fast immersed boundary method based on weighted quadrature

B Marussig, R Hiemstra, D Schillinger - Computer Methods in Applied …, 2023 - Elsevier
Combining sum factorization, weighted quadrature, and row-based assembly enables
efficient higher-order computations for tensor product splines. We aim to transfer these …

High order unfitted finite element discretizations for explicit boundary representations

PA Martorell, S Badia - Journal of Computational Physics, 2024 - Elsevier
When modeling scientific and industrial problems, geometries are typically modeled by
explicit boundary representations obtained from computer-aided design software. Unfitted …

Quadrature-free immersed isogeometric analysis

P Antolin, T Hirschler - Engineering with Computers, 2022 - Springer
This paper presents a novel method for solving partial differential equations on three-
dimensional CAD geometries by means of immersed isogeometric discretizations that do not …

Stabilized isogeometric formulation of the Stokes problem on overlapping patches

X Wei, R Puppi, P Antolin, A Buffa - Computer Methods in Applied …, 2023 - Elsevier
We present a novel stabilized isogeometric formulation for the Stokes problem, where the
geometry of interest is obtained via overlapping NURBS (non-uniform rational B-spline) …

High-order numerical integration on domains bounded by intersecting level sets

L Beck, F Kummer - arXiv preprint arXiv:2308.10698, 2023 - arxiv.org
We present a high-order method that provides numerical integration on volumes, surfaces,
and lines defined implicitly by two smooth intersecting level sets. To approximate the …

Interpolation-based immersogeometric analysis methods for multi-material and multi-physics problems

JE Fromm, N Wunsch, K Maute, JA Evans… - Computational …, 2024 - Springer
Immersed boundary methods are high-order accurate computational tools used to model
geometrically complex problems in computational mechanics. While traditional finite …

Adaptive quadrature/cubature rule: Application to polytopes

B Boroomand, N Niknejadi - Computer Methods in Applied Mechanics and …, 2023 - Elsevier
A new quadrature rule for 2D/3D domains is proposed. We first embed the domain in a
circumscribing square/cube and then distribute a set of Gauss points in the square/cube. A …

[PDF][PDF] High-order quadrature on multi-component domains implicitly defined by

RI Saye - 2022 - scholar.archive.org
A high-order quadrature algorithm is presented for computing integrals over curved surfaces
and volumes whose geometry is implicitly defined by the level sets of (one or more) …