Sökning: "shell-element"

Visar resultat 1 - 5 av 14 uppsatser innehållade ordet shell-element.

  1. 1. Implementation and validation of an isogeometric hierarchic shell formulation

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Michael Loibl; [2019]
    Nyckelord :Isogeometric Analysis; Shell; Locking; Kirchho-Love; Reissner-Mindlin; Three-Dimensional Shell I;

    Sammanfattning : Within this thesis, thin walled shell structures are discussed with modern element formulationsin the context of the Isogeometric Analysis (IGA). IGA was designed to achieve a directinterface from CAD to analysis. According to the concept of IGA, Non-Uniform RationalB-Splines (NURBS) are used as shape functions in the design and the analysis. LÄS MER

  3. 2. Parametric Optimization of Foundation Improvements with RC Slabs on Piles

    Master-uppsats, KTH/Betongbyggnad

    Författare :Oliver Kling; Nils Dahlman; [2019]
    Nyckelord :Parametric Design; Parametric Optimization; Concrete Structures; Reinforced Concrete; Foundation Improvements;

    Sammanfattning : Parametric design has proven to be a powerful tool for structural engineers to find innovativesolutions to complex problems more effectively compared to conventional methods. Theflexibility off parametric design is immense since all types of structures depend on a range ofparameters that can be isolated, controlled and altered. LÄS MER

  4. 3. Infuence of the modelling of truss joints made of hollow tube sections in finite element models

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Mattheüs Lucassen; [2019]
    Nyckelord :Truss joints; Circular Hollow Sections CHS ; Fatigue; Finite Element Modelling FEM ; Crane; Boom section; Local joint exibility LJF ; Stress concentration factors SCF ; Fackverksled; Cirkulära ihåliga proler; Utmattning; Finita Elementmetoden FEM ; Kran; Kranarmsektion; Lokal ledexibilitet; Spänningskoncentrationsfaktorer.;

    Sammanfattning : Several boom segments form the crane boom. These segments are often truss structures formed out of circular hollow sections, which are welded together forming the truss joints. A adequate modelling of these truss joints is very important for operational strength and life. LÄS MER

  5. 4. Implementation of Solid Shell Element for Modelling of Paperboard

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Hållfasthetslära

    Författare :Kristofer Robertsson; [2016]
    Nyckelord :Technology and Engineering;

    Sammanfattning : .... LÄS MER

  7. 5. Offset modeling of shell elements : A study in shell element modeling using Nastran

    Master-uppsats, Linköpings universitet/Mekanik och hållfasthetslära

    Författare :David Klarholm; [2016]
    Nyckelord :Offset shell elements; finite element; Nastran; shell element modeling; Rigid body connection; Rigid links; Kirchhoff shells; Multipoint constraint;

    Sammanfattning : At Saab Aerostructures they are manufacturing a lot of parts for Airbus and Boeing. When these components are investigated using finite element analysis four-node Kirchhoff shell elements and a very fine mesh is often used. LÄS MER