[HTML][HTML] Deterministic and stochastic phase-field modeling of anisotropic brittle fracture

S Nagaraja, U Römer, HG Matthies… - Computer Methods in …, 2023 - Elsevier
We investigate variational phase-field formulations of anisotropic brittle fracture to model
zigzag crack patterns in cubic materials. Our objective is twofold:(i) to analytically derive and …

Quasi-Monte Carlo based uncertainty analysis: Sampling efficiency and error estimation in engineering applications

T Hou, D Nuyens, S Roels, H Janssen - Reliability Engineering & System …, 2019 - Elsevier
In this paper, the potential benefits of quasi-Monte Carlo (QMC) methods for uncertainty
propagation are assessed via two applications: a numerical case study and a realistic and …

On the convergence of the Laplace approximation and noise-level-robustness of Laplace-based Monte Carlo methods for Bayesian inverse problems

C Schillings, B Sprungk, P Wacker - Numerische Mathematik, 2020 - Springer
The Bayesian approach to inverse problems provides a rigorous framework for the
incorporation and quantification of uncertainties in measurements, parameters and models …

A quasi-Monte Carlo method for optimal control under uncertainty

PA Guth, V Kaarnioja, FY Kuo, C Schillings… - SIAM/ASA Journal on …, 2021 - SIAM
We study an optimal control problem under uncertainty, where the target function is the
solution of an elliptic partial differential equation with random coefficients, steered by a …

Innovative digital stochastic methods for multidimensional sensitivity analysis in air pollution modelling

V Todorov, I Dimov - Mathematics, 2022 - mdpi.com
Nowadays, much of the world has a regional air pollution strategy to limit and decrease the
pollution levels across governmental borders and control their impact on human health and …

On dropping the first Sobol'point

AB Owen - International conference on Monte Carlo and quasi …, 2020 - Springer
Abstract Quasi-Monte Carlo (QMC) points are a substitute for plain Monte Carlo (MC) points
that greatly improve integration accuracy under mild assumptions on the problem. Because …

Parabolic PDE-constrained optimal control under uncertainty with entropic risk measure using quasi-Monte Carlo integration

PA Guth, V Kaarnioja, FY Kuo, C Schillings… - Numerische …, 2024 - Springer
We study the application of a tailored quasi-Monte Carlo (QMC) method to a class of optimal
control problems subject to parabolic partial differential equation (PDE) constraints under …

Multi-fidelity microstructure-induced uncertainty quantification by advanced Monte Carlo methods

A Tran, P Robbe, H Lim - Materialia, 2023 - Elsevier
Quantifying uncertainty associated with the microstructure variation of a material can be a
computationally daunting task, especially when dealing with advanced constitutive models …

Quantum quasi-Monte Carlo technique for many-body perturbative expansions

M Maček, PT Dumitrescu, C Bertrand, B Triggs… - Physical Review Letters, 2020 - APS
High order perturbation theory has seen an unexpected recent revival for controlled
calculations of quantum many-body systems, even at strong coupling. We adapt integration …

Approximation of high-dimensional periodic functions with Fourier-based methods

D Potts, M Schmischke - SIAM Journal on Numerical Analysis, 2021 - SIAM
We propose an approximation method for high-dimensional 1-periodic functions based on
the multivariate ANOVA decomposition. We provide analysis of classical ANOVA …