Sökning: "Tensile Stress"

Visar resultat 21 - 25 av 163 uppsatser innehållade orden Tensile Stress.

  1. 21. Linear Impact of Bicycle Helmet – Experimental Testing and FE-modelling

    Master-uppsats, KTH/Hållfasthetslära

    Författare :Ludvig Dahlin; Ebba Larsson Regnström; [2022]
    Nyckelord :FEM; Finite element method; bicycle helmet; impact modelling; solid mechanics; FEM; Finita element-metoden; cykelhjälm; islagsmodellering; hållfasthetslära;

    Sammanfattning : The aim with this master thesis was to set up a FE-simulation of an impact test of a bike helmet in LS-DYNA that correlates well with the peak acceleration score of a real life impact test. Furthermore, a parametric study has been performed in LS DYNA to investigate the robustness of the model, as well as to see which parameters have a great influence on the peak acceleration score. LÄS MER

  3. 22. A method for developing stress-strain relationships using Nanoindentations

    Master-uppsats, Lunds universitet/Industriell Produktion

    Författare :Ludvig Lindsjö; Fanny Linander; [2021]
    Nyckelord :Nanoindentation; Material Science; Steel; Solid Mechanics; Technology and Engineering;

    Sammanfattning : This thesis is a material science research collaboration between the Division ofProduction and Materials Engineering at Lund Faculty of Engineering and theComputer-Aided Engineerings group at BorgWarner, Landskrona. The objectiveof the thesis is to explore the convertion of nanoindentation load-depth curves intotensile stress-strain curves, and to provide BorgWarner Landskrona with nanoin-dentation data on materials used in their standard production. LÄS MER

  4. 23. Novel materials from lignocellulosic sources- can they replace thermoplastics?

    Kandidat-uppsats, KTH/Fiber- och polymerteknologi

    Författare :Emmy Albinsson; Helina Tafesse Belachew; Jasmin Swaich; Hannah Juhlin; [2021]
    Nyckelord :Emulisonspolymerisation; Biobaserade plaster; Hållbarhet; Polymerer; Bearbetad halm; Kompositer; PISA-raft;

    Sammanfattning : Plastic waste is a severe environmental problem in today's society which has been noticed and discussed during the last couple of years. A constant increase of production over the last decades hasled to a large amount of plastic waste ending up in oceans as microplastics. LÄS MER

  5. 24. Tensile strength reduction for insufficient thread engagement A FEM study of a wall-shoe assembly

    Master-uppsats, KTH/Hållfasthetslära

    Författare :Henrik Larsson Sevon; [2021]
    Nyckelord :Solid Mechanics; Tensile strength; Wall-shoe; Thread engagement; Hållfasthetslära; Draghållfasthet; Väggsko; Gängingrepp;

    Sammanfattning : The purpose of this master thesis is to determine whether or not it exist, a model that can describethe reduction in strength, due to missing threads in a bond between a bolt and nut. And how thereduction in strength might effect a wall-shoe assembly, used to connect a wall to another wall or aconcrete base plate. LÄS MER

  7. 25. Subject-specific image analysis and computational modelling of the human Achilles tendon

    Master-uppsats, Lunds universitet/Avdelningen för Biomedicinsk teknik

    Författare :Johanna Panzar; Erika Thörn; [2021]
    Nyckelord :image analysis; Achilles tendon; FE model; biomechanics; CT image; Technology and Engineering;

    Sammanfattning : Achilles tendon rupture is becoming more prevalent with an increasing population of middle aged people participating in recreational sports. A torn Achilles tendon will likely not regain its original function, and it is unknown what treatment options are optimal. LÄS MER