Sökning: "nonlinear finite element method"

Visar resultat 26 - 30 av 43 uppsatser innehållade orden nonlinear finite element method.

  1. 26. Progressive failure analyses of concrete buttress dams : Influence of crack propagation on the structural dam safety

    Master-uppsats, KTH/Betongbyggnad

    Författare :Chaoran Fu; Bjartmar Hafliðason; [2015]
    Nyckelord :concrete buttress dams; cracked concrete; failure modes; safety factor; finite element analysis; nonlinear material properties; betong; lamelldammar; uppsprucken betong; brottmoder; säkerhetsfaktor; finita element analyser; icke-linjära material modeller;

    Sammanfattning : Concrete buttress dams are the most common type of concrete dams for hydropower production in Sweden. Cracks have been observed in some of the them. However, only limited research has been made concerning the influence of these cracks on the structural dam safety. LÄS MER

  3. 27. Simplified finite element bearing modeling : with NX Nastran

    Uppsats för yrkesexamina på grundnivå, Uppsala universitet/Tillämpad mekanik

    Författare :Erik Adolfsson; [2015]
    Nyckelord :ball bearing; simplified; model; FEM;

    Sammanfattning : This report was produced at the request of ABB Robotics and the work was conducted at their facilities in Västerås, Sweden. In the development of industrial robots the structures are slimmed to increase the accuracy and speed. LÄS MER

  4. 28. Development and analysis of a new component test for a sliding door system

    Magister-uppsats, Linnéuniversitetet/Institutionen för maskinteknik (MT)

    Författare :Minghao Sun; Xianyang Chen; Le Kuai; [2015]
    Nyckelord :test rigs; sliding door system; finite element analysis; simulation-driven design;

    Sammanfattning : The IKEA sliding door system is widely employed on IKEA’s wardrobes. In view of the massive usage of it, any optimization for reducing production costs is crucial. This work attempts to develop a special static test rig for a component of IKEA’s sliding door system. It will be used to check the quality of the component in production. LÄS MER

  5. 29. Modelling and Simulation of Electrostatic Precipitators with a Dust Layer

    Master-uppsats, Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

    Författare :Yevhen Ivanenko; [2015]
    Nyckelord :electrostatic precipitator; ESP; precipitation process; dust layer; resistivity of the dust layer; COMSOL Multiphysics;

    Sammanfattning : A dust layer, especially based on high-resistivity dust, at the collecting electrodes may cause a back corona discharge in electrostatic precipitators (ESP). It can significantly reduce the ESP efficiency and as a result cause ecological damages. LÄS MER

  7. 30. A Comparison of Linear and Nonlinear Finite Element Stabilization Techniques for Fluid Problems

    Kandidat-uppsats, Uppsala universitet/Institutionen för informationsteknologi

    Författare :Anton Segerkvist; [2015]
    Nyckelord :;

    Sammanfattning : The standard Galerkin, entropy viscosity (EV) and streamline upwind Petrov Galerkin (SUPG) methods were implemented for the advection equation and the Navier-Stokes equations for an incompressible fluid to determine which of the methods is better in terms of accuracy and time requirements. For the advection equation a disk with a rotating stream was modeled for both a continuous and a discontinuous initial condition. LÄS MER