Numerical homogenization beyond scale separation

R Altmann, P Henning, D Peterseim - Acta Numerica, 2021 - cambridge.org
Numerical homogenization is a methodology for the computational solution of multiscale
partial differential equations. It aims at reducing complex large-scale problems to simplified …

A one-shot overlapping Schwarz method for component-based model reduction: application to nonlinear elasticity

A Iollo, G Sambataro, T Taddei - Computer Methods in Applied Mechanics …, 2023 - Elsevier
We propose a component-based (CB) parametric model order reduction (pMOR) formulation
for parameterized nonlinear elliptic partial differential equations (PDEs) based on …

[HTML][HTML] An overlapping domain decomposition method for the solution of parametric elliptic problems via proper generalized decomposition

M Discacciati, BJ Evans, M Giacomini - Computer Methods in Applied …, 2024 - Elsevier
A non-intrusive proper generalized decomposition (PGD) strategy, coupled with an
overlapping domain decomposition (DD) method, is proposed to efficiently construct …

Localized model reduction for nonlinear elliptic partial differential equations: localized training, partition of unity, and adaptive enrichment

K Smetana, T Taddei - SIAM Journal on Scientific Computing, 2023 - SIAM
We propose a component-based (CB) parametric model order reduction (pMOR) formulation
for parameterized nonlinear elliptic partial differential equations. CB-pMOR is designed to …

A new certified hierarchical and adaptive RB-ML-ROM surrogate model for parametrized PDEs

B Haasdonk, H Kleikamp, M Ohlberger… - SIAM Journal on …, 2023 - SIAM
We present a new surrogate modeling technique for efficient approximation of input-output
maps governed by parametrized PDEs. The model is hierarchical as it is built on a full order …

[HTML][HTML] A reduced order model for geometrically parameterized two-scale simulations of elasto-plastic microstructures under large deformations

T Guo, O Rokoš, K Veroy - Computer Methods in Applied Mechanics and …, 2024 - Elsevier
In recent years, there has been a growing interest in understanding complex microstructures
and their effect on macroscopic properties. In general, it is difficult to derive an effective …

Non-intrusive data-driven model reduction for differential–algebraic equations derived from lifting transformations

P Khodabakhshi, KE Willcox - Computer Methods in Applied Mechanics …, 2022 - Elsevier
This paper presents a non-intrusive data-driven approach for model reduction of nonlinear
systems. The approach considers the particular case of nonlinear partial differential …

Localized model order reduction and domain decomposition methods for coupled heterogeneous systems

N Discacciati, JS Hesthaven - International Journal for …, 2023 - Wiley Online Library
We propose a model order reduction technique to accurately approximate the behavior of
multi‐component systems without any a‐priori knowledge of the coupled model. In the …

Adaptive experimental design for multi‐fidelity surrogate modeling of multi‐disciplinary systems

JD Jakeman, S Friedman, MS Eldred… - International Journal …, 2022 - Wiley Online Library
We present an adaptive algorithm for constructing surrogate models of multi‐disciplinary
systems composed of a set of coupled components. With this goal we introduce “coupling” …

[HTML][HTML] Multiscale modeling of prismatic heterogeneous structures based on a localized hyperreduced-order method

A Giuliodori, JA Hernández, E Soudah - Computer Methods in Applied …, 2023 - Elsevier
This work aims at deriving special types of one-dimensional Finite Elements (1D FE) for
efficiently modeling heterogeneous prismatic structures, in the small strains regime, by …