Concept
Méthodes de Runge-Kutta
Publications associées (262)
Concrete dam AAR numerical modelling and stress relief measures
In Switzerland, the peak period for the construction of large hydropower plants dates back than 50 years ago. Only in the '80s a reaction was discovered, which generates internal swelling of the concrete and causes permanent damage to the structures. The r ...
2021A hybrid collocation-perturbation approach for PDEs with random domains
Consider a linear elliptic PDE defined over a stochastic stochastic geometry a function of N random variables. In many application, quantify the uncertainty propagated to a quantity of interest (QoI) is an important problem. The random domain is split into ...
2021Modeling Supply Chain Disruptions: A Network Flow Approach
Globalization, outsourcing and cost optimization have all contributed to increased supply chain vulnerability, yet our understanding of effective mitigation strategies remains limited. In our research, we study the effects of disruptions on supply chain ne ...
EPFL2021Nonlinear study on a rigid rotor supported by herringbone grooved gas bearings: Theory and validation
Jürg Alexander Schiffmann, Patrick Hubert Wagner, Philipp Kaspar Bättig, Wanhui Liu
The nonlinear behavior of a rigid rotor supported by herringbone grooved journal gas bearings (HGJBs) was investigated in this study. The two-dimensional narrow groove theory (2D-NGT) was adopted to model the HGJBs. A set of integrated rotor-bearing state ...
2021Regret Minimization in Stochastic Non-Convex Learning via a Proximal-Gradient Approach
Volkan Cevher, Shaul Nadav Hallak
This paper develops a methodology for regret minimization with stochastic first-order oracle feedback in online, constrained, non-smooth, non-convex problems. In this setting, the minimization of external regret is beyond reach for first-order methods, and ...
JMLR-JOURNAL MACHINE LEARNING RESEARCH2021Design and fabrication of a reusable kit of parts for diverse structures
Corentin Jean Dominique Fivet, Gennaro Senatore, Jan Friedrich Georg Brütting
Reusing structural components for multiple service cycles has potential to lower building structures environmental impact because it reduces material resource use, energy consumption, and waste production. One strategy to reuse structural components is to ...
2021Interactive, Real Time Structural Simulation
The aim of this thesis is to develop a model that provides a fast analysis of structures subjected to large displacements. This is done by transforming the structure in a set of nite particles and by applying a method called dynamic relaxation to it. The l ...
2020A Study of Several Artificial Viscosity Models within the Discontinuous Galerkin Framework
Dealing with strong shocks while retaining low numerical dissipation traditionally has been one of the major challenges for high order methods like discontinuous Galerkin (DG). In the literature, shock capturing models have been designed for DG based on va ...
GLOBAL SCIENCE PRESS2020High-order essentially nonoscillatory methods based on radial basis functions
Essentially nonoscillatory (ENO) and weighted ENO (WENO) methods on equidistant Cartesian grids are widely employed to solve partial differential equations with discontinuous solutions. However, stable ENO/WENO methods on unstructured grids are less well s ...
EPFL2020MATHICSE technical Report : Stabilized explicit multirate methods for stiff differential equations
Assyr Abdulle, Giacomo Rosilho De Souza
Stabilized Runge–Kutta (aka Chebyshev) methods are especially efficient for the numerical solution of large systems of stiff differential equations because they are fully explicit; hence, they are inherently parallel and easily accommodate nonlinearity. Fo ...
MATHICSE2020