Sökning: "finite-element simulations."

Visar resultat 21 - 25 av 459 avhandlingar innehållade orden finite-element simulations..

  1. 21. Finite Element simulations: computations and applications to aerodynamics and biomedicine

    Författare :Massimiliano Leoni; Johan Hoffman; David Kamensky; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; radiofrequency ablation; finite elements; numerical simulations; partial differential equations; biomedical applications; HPC; Computer Science; Datalogi;

    Sammanfattning :   Partial Differential Equations describe a large number of phenomena of practical interest and their solution usually requires running huge simulations on supercomputing clusters.  Especially when dealing with turbulent flows, the cost of such simulations, if approached naively, makes them unfeasible, requiring modelling intervention. LÄS MER

  3. 22. Modelling of Granular Materials

    Författare :Aylin Ahadi; Mekanik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hydraulic engineering; Civil engineering; materialteknik; Materiallära; Material technology; binary mixture model; simulations; material modelling; finite element; granular materials; offshore technology; soil mechanics; Väg- och vattenbyggnadsteknik;

    Sammanfattning : The aim of this doctoral study is to develop and implement a material model for granular materials. The course of this work was concentrated upon a non-associated plasticity model with yield surface and the flow potential expressed in terms of the mean stress p and the third stress invariants I3. LÄS MER

  4. 23. On the Arbitrary Lagrangian-Eulerian Finite Element Method

    Författare :Lars Olovsson; Kenneth Runesson; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; large deformation plasticity; FEM; ALE; multi-material Euler; machining simulations;

    Sammanfattning : This thesis has been devoted to the study and development of algorithms for Finite Element (FE) simulations of mechanical processes involving large deformations. Aspects of three different formulations have been considered:(i) The single material Arbitrary Lagrangian-Eulerian (ALE) formulation is a method where the FE mesh is allowed to move independently to the material flow. LÄS MER

  5. 24. Applications of Finite Element Simulation and Mixed Reality in Architecture and Built Environment

    Författare :Carl Lundholm; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; augmented reality; FEniCS; multimesh; CutFEM; multi-objective optimization; mixed reality; HoloLens; virtual reality; view computation; finite element method;

    Sammanfattning : This thesis presents applications in architecture and built environment that are based on the finite element method and mixed reality. The work consists of two main components: two projects presented in three papers. The first project (presented in Paper I) concerns an application in urban design, thus built environment on a larger scale. LÄS MER

  7. 25. Cut finite element methods for interface problems

    Författare :Thomas Frachon; Sara Zahedi; Anders Logg; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Tillämpad matematik och beräkningsmatematik; Applied and Computational Mathematics;

    Sammanfattning : Interface problems modeled by Partial Differential Equations (PDEs) appear in a wide range of fields such as biology, fluid dynamics, micro and nano-technologies. In computer simulations of such problems a fundamental task is to numerically solve PDEs in/on domains defined by deformable interfaces/geometries. LÄS MER