Two multifidelity kriging-based strategies to control discretization error in reliability analysis exploiting a priori and a posteriori error estimators

L Mell, V Rey, F Schoefs - Computers & Structures, 2023 - Elsevier
This paper presents two approaches to tackle the issue of discretization error in the reliability
assessment of structures. The first method (AGSK-MCS for Adaptive Guaranteed State …

Support vectors machines for the estimation of probability of failure: Multifidelity classifiers built from a posteriori discretization error estimators

L Mell, V Rey, F Schoefs - Structural Safety, 2023 - Elsevier
This article proposes two algorithms to compute the probability of failure using Support
Vector Machine (SVM) classifiers and Monte Carlo estimator in the context of structural …

A strict error bound with separated contributions of the discretization and of the iterative solver in non-overlapping domain decomposition methods

V Rey, C Rey, P Gosselet - Computer Methods in Applied Mechanics and …, 2014 - Elsevier
This paper deals with the estimation of the distance between the solution of a static linear
mechanic problem and its approximation by the finite element method solved with a non …

Multifidelity adaptive kriging metamodel based on discretization error bounds

L Mell, V Rey, F Schoefs - International Journal for Numerical …, 2020 - Wiley Online Library
This article presents an approach to build a multifidelity kriging metamodel from finite
element computations on different meshes for stuctural reliability assessment. The proposed …

Computable upper and lower bounds on eigenfrequencies

L Wang, L Chamoin, P Ladevèze, H Zhong - Computer methods in applied …, 2016 - Elsevier
This paper is a revisit of the work [Ladevèze and Pelle, Int. J. Numer. Methods Engrg. 28
(1989)] where the goal here is to acquire guaranteed, accurate and computable bounds of …

Strict bounding of quantities of interest in computations based on domain decomposition

V Rey, P Gosselet, C Rey - Computer Methods in Applied Mechanics and …, 2015 - Elsevier
This paper deals with bounding the error on the estimation of quantities of interest obtained
by finite element and domain decomposition methods. The proposed bounds are written in …

A new equilibrated residual method improving accuracy and efficiency of flux-free error estimates

N Parés, P Díez - Computer Methods in Applied Mechanics and …, 2017 - Elsevier
This paper presents a new methodology to compute guaranteed upper bounds for the
energy norm of the error in the context of linear finite element approximations of the reaction …

Improved recovery of admissible stress in domain decomposition methods—application to heterogeneous structures and new error bounds for FETI‐DP

A Parret‐Fréaud, V Rey, P Gosselet… - International Journal for …, 2017 - Wiley Online Library
This paper investigates the question of the building of admissible stress field in a
substructured context. More precisely, we analyze the special role played by multiple points …

Strict lower bounds with separation of sources of error in non‐overlapping domain decomposition methods

V Rey, P Gosselet, C Rey - International Journal for Numerical …, 2016 - Wiley Online Library
This article deals with the computation of guaranteed lower bounds of the error in the
framework of finite element and domain decomposition methods. In addition to a fully …

Uncertainty Propagation of Structural Computation for Fatigue Assessment

L Mell, V Rey, F Schoefs, B Rocher - Journal of Marine Science and …, 2022 - Springer
Offshore wind substations are subjected to uncertain loads from waves, wind and currents.
Sea states are composed of irregular waves which statistics are usually characterized …