Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Elfverson, Daniel"'
In this work we propose an adaptive multilevel version of subset simulation to estimate the probability of rare events for complex physical systems. Given a sequence of nested failure domains of increasing size, the rare event probability is expresse
Externí odkaz:
http://arxiv.org/abs/2208.05392
We design and analyze a hybridized cut finite element method for elliptic interface problems. In this method very general meshes can be coupled over internal unfitted interfaces, through a skeletal variable, using a Nitsche type approach. We discuss
Externí odkaz:
http://arxiv.org/abs/1810.12078
Cut Topology Optimization for Linear Elasticity with Coupling to Parametric Nondesign Domain Regions
We develop a density based topology optimization method for linear elasticity based on the cut finite element method. More precisely, the design domain is discretized using cut finite elements which allow complicated geometry to be represented on a s
Externí odkaz:
http://arxiv.org/abs/1809.07503
Publikováno v:
Computer Methods in Applied Mechanics and Engineering, 2019, Vol. 349, Pages 1-16
We derive a new stabilized symmetric Nitsche method for enforcement of Dirichlet boundary conditions for elliptic problems of second order in cut isogeometric analysis (CutIGA). We consider $C^1$ splines and stabilize the standard Nitsche method by a
Externí odkaz:
http://arxiv.org/abs/1804.05654
Publikováno v:
Adv. Model. and Simul. in Eng. Sci. (2018) 5: 6
We consider a cut isogeometric method, where the boundary of the domain is allowed to cut through the background mesh in an arbitrary fashion for a second order elliptic model problem. In order to stabilize the method on the cut boundary we remove ba
Externí odkaz:
http://arxiv.org/abs/1801.00673
Autor:
Elfverson, Daniel
In this thesis we consider two great challenges in computer simulations of partial differential equations: multiscale data, varying over multiple scales in space and time, and data uncertainty, due to lack of or inexact measurements. We develop a mul
Externí odkaz:
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-262354
Autor:
Lejon, Christian, Vågberg, Daniel, Schönfeldt, Fredrik, Liljedahl, Birgitta, Persson, Leif, Burman, Jan, Elfverson, Daniel, Rydman, Joakim Eriksson, Sjöström, Jan, Björnham, Oscar
Publikováno v:
Air Quality, Atmosphere & Health; Oct2024, Vol. 17 Issue 10, p2077-2089, 13p
Publikováno v:
Computer Methods in Applied Mechanics and Engineering Volume 328, 1 January 2018, Pages 242-261
We present a cut finite element method for shape optimization in the case of linear elasticity. The elastic domain is defined by a level-set function, and the evolution of the domain is obtained by moving the level-set along a velocity field using a
Externí odkaz:
http://arxiv.org/abs/1611.05673
We develop a cut finite element method for the Bernoulli free boundary problem. The free boundary, represented by an approximate signed distance function on a fixed background mesh, is allowed to intersect elements in an arbitrary fashion. This leads
Externí odkaz:
http://arxiv.org/abs/1609.02836
Autor:
Elfverson, Daniel
In this thesis a new multiscale method, the discontinuous Galerkin multiscale method, is proposed. The method uses localized fine scale computations to correct a global coarse scale equation and thereby takes the fine scale features into account. We
Externí odkaz:
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-200260