Results 21 to 30 of about 651,142 (275)

The nonconforming virtual element method [PDF]

open access: yesESAIM: Mathematical Modelling and Numerical Analysis, 2016
We introduce the nonconforming Virtual Element Method (VEM) for the approximation of second order elliptic problems. We present the construction of the new element in two and three dimensions, highlighting the main differences with the conforming VEM and the classical nonconforming finite element methods. We provide the error analysis and establish the
Ayuso De Dios, B   +2 more
openaire   +5 more sources

The Virtual Element Method for the Dam Foundation With Joint

open access: yesFrontiers in Earth Science, 2022
The contact is a typical non-linear problem that exists in various projects. For traditional three-node triangular mesh and four-node quadrilateral mesh, the accuracy and convergence of the calculation results are affected by the quality of the mesh. The
Yinghao Sun   +7 more
doaj   +1 more source

AN IMPROVED DISTINCT ELEMENT METHOD FOR HIGH PACKING FRACTION STOCHASTIC MEDIA MODELING [PDF]

open access: yesEPJ Web of Conferences, 2021
Due to the generality and flexibility of Monte Carlo method in geometric modeling, Monte Carlo method plays an important role in accurate simulation of random media.
Feng Zhiyuan, An Nan, Wang Kan
doaj   +1 more source

Virtual Elements on polyhedra with a curved face

open access: yesBulletin of Mathematical Sciences, 2023
We revisit classical Virtual Element approximations on polygonal and polyhedral decompositions. We also recall the treatment proposed for dealing with decompositions into polygons with curved edges.
Franco Brezzi, L. Donatella Marini
doaj   +1 more source

Virtual element method for quasilinear elliptic problems [PDF]

open access: yesIMA Journal of Numerical Analysis, 2019
Abstract A virtual element method for the quasilinear equation $-\textrm{div} ({\boldsymbol \kappa }(u)\operatorname{grad} u)=f$ using general polygonal and polyhedral meshes is presented and analysed. The nonlinear coefficient is evaluated with the piecewise polynomial projection of the virtual element ansatz.
Cangiani A.   +3 more
openaire   +3 more sources

An AR Map Virtual–Real Fusion Method Based on Element Recognition

open access: yesISPRS International Journal of Geo-Information, 2023
The application of AR to explore augmented map representation has become a research hotspot due to the growing application of AR in maps and geographic information in addition to the rising demand for automated map interpretation.
Zhangang Wang
doaj   +1 more source

Superconvergent gradient recovery for virtual element methods [PDF]

open access: yesMathematical Models and Methods in Applied Sciences, 2019
Virtual element method is a new promising finite element method using general polygonal meshes. Its optimal a priori error estimates are well established in the literature. In this paper, we take a different viewpoint. We try to uncover the superconvergent property of virtual element methods by doing some local post-processing only on the degrees of ...
Guo, Hailong, Xie, Cong, Zhao, Ren
openaire   +3 more sources

Basic principles of mixed Virtual Element Methods [PDF]

open access: yesESAIM: Mathematical Modelling and Numerical Analysis, 2014
The aim of this paper is to give a simple, introductory presentation of the extension of the Virtual Element Method to the discretization of H(div)-conforming vector fields (or, more generally, of (n-1)-Cochains). As we shall see, the methods presented here can be seen as extensions of the so-called BDM family to deal with more general element ...
F Brezzi, RS Falk, LD Marini
openaire   +4 more sources

A free‐cutting mesh strategy for optimal shape synthesis in magnetics

open access: yesIET Science, Measurement & Technology, 2022
The authors propose an innovative technique for dealing with optimal shape design problems that exploits the flexibility of the virtual element method in generating meshes composed of general polygonal and polyhedral elements.
F. Dassi, P. Di Barba, A. Russo
doaj   +1 more source

Some error analysis on virtual element methods [PDF]

open access: yesCalcolo, 2018
Some error analysis on virtual element methods including inverse inequalities, norm equivalence, and interpolation error estimates are presented for polygonal meshes which admits a virtual quasi-uniform triangulation.
Chen, Long, Huang, Jianguo
openaire   +4 more sources

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