European Journal of Computational Mechanics 

About: European Journal of Computational Mechanics is an academic journal published by Taylor & Francis. The journal publishes majorly in the area(s): Finite element method & Extended finite element method. It has an ISSN identifier of 1779-7179. Over the lifetime, 529 publications have been published receiving 4289 citations. The journal is also known as: EJCM & REMN.

Stochastic finite element: a non intrusive approach by regression

Abstract: The stochastic finite element method allows to solve stochastic boundary value problems where material properties and loads are random. The method is based on the expansion of the mechanical response onto the so-called polynomial chaos. In this paper, a non intrusive method based on a least-squares minimization procedure is presented. This method is illustrated by the study of the settlement of a foundation. Different analysis are proposed: the computation of the statistical moments of the response, a reliability analysis and a parametric sensitivity analysis.

A comparative evaluation of genetic and gradient-based algorithms applied to aerodynamic optimization

Abstract: A genetic algorithm is compared with a gradient-based (adjoint) algorithm in the context of several aerodynamic shape optimization problems The examples include singlepoint and multipoint optimization problems, as well as the computation of a Pareto front The results demonstrate that both algorithms converge reliably to the same optimum Depending on the nature of the problem, the number of design variables, and the degree of convergence, the genetic algorithm requires from 5 to 200 times as many function evaluations as the gradientbased algorithm

Méthode asymptotique numérique

Abstract: Cet ouvrage presente une famille de techniques numeriques destinees a resoudre des problemes non lineaires dependant d'un parametre scalaire Ces methodes visent le meme objectif que les methodes de continuation classiques mais avec une strategie differente : les classiques approximations tangentes sont remplacees par des series entieres tronquees a des ordres relativement elevees Parce que ces series contiennent enormement informations, la plupart inaccessible par les algorithmes classiques, le cheminement sur les branches de solutions est simple et robuste, meme pour les problemes difficiles impliquant des bifurcations et des instabilites La premiere partie de ce livre se veut pedagogique et contient de nombreux petits exemples d'illustration Elle s'adresse a tous les chercheurs, ingenieurs, enseignants, etudiants interesses par la resolutions d'equations non lineaires (algebriques, differentielles, derivees partielles) qu'elle qu'en soit la discipline scientifique La seconde partie concerne plus particulierement les problemes issus de la mecanique des milieux continus, et discretises par la methode des elements finis L'objet est notamment de montrer que le calcul des series a des ordres eleves est realisable, aussi bien sur des problemes complexes que sur des problemes de grandes tailles, et que la mise en oeuvre n'est pas beaucoup plus difficile que pour les algorithmes classiques Cet ouvrage fait le point sur 15 annees de recherches effectuees par les auteurs et leurs collaborateurs, sur le mariage des series asymptotiques et des methodes numeriques

An extended and integrated digital image correlation technique applied to the analysis of fractured samples The equilibrium gap method as a mechanical filter

Abstract: To reduce the measurement uncertainty, a measurement technique is proposed for es- timating full displacement fields by complementing digital image correlation with an additional penalization on the distance between the estimated displacement field and its projection onto the space of elastic solutions. The extended finite element method is used for inserting disconti- nuities independently of the underlying mesh. An application to the brittle fracture of a silicon carbide specimen is used to illustrate the application. To complete the analysis, the crack tip location and the stress intensity factors are estimated. This allows for a characterization of the measurement and identification procedure in terms of uncertainty.

Conception optimale de structures

Abstract: (2007). Conception optimale de structures. European Journal of Computational Mechanics: Vol. 16, No. 8, pp. 1073-1074.