Sökning: "triaxiality"

Visar resultat 1 - 5 av 9 uppsatser innehållade ordet triaxiality.

  1. 1. Numerical Modelling of Combined Forming and Punching of Sheet Metal for Heat Exchanger Applications

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Hållfasthetslära; Lunds universitet/Institutionen för byggvetenskaper

    Författare :Erik Stålbrand; [2023]
    Nyckelord :Solid Mechanics; Material Modelling; Damage Modelling; Sheet Metal Damage; Punching Simulation; Forming Simulation; Heat Exchanger; Technology and Engineering;

    Sammanfattning : In this work a strategy for numerical simulation of punching during concurrent pressing of stainless steel sheet metal has been investigated accounting for the stress triaxiality and Lode angle parameter. Modelling of the damage evolution of a sheet metal is a useful tool within the field of engineering and materials science, and can provide useful information regarding material capabilities in a design process. LÄS MER

  3. 2. Modelling and Evaluation of the Methods for Compression Testing of Thermoplastics

    Master-uppsats, KTH/Teknisk mekanik

    Författare :Abdul Rahman Itani; [2021]
    Nyckelord :hermoplastics; polyamide 6; yield criteria; uniaxial stress; compression test; triaxiality; Mohr’s Circle; Lode Parameter; LS-DYNA; ermoplaster; polyamid 6; flyttspänningskriterier; enaxlig spänning; kompressionsprov; triaxialitet; Mohrs Cirkel; Lode Parameter; LS-DYNA;

    Sammanfattning : The application of thermoplastics as load-carrying components in furniture applications is an attractive prospect at IKEA. Thermoplastics can be used instead of metal where advanced geometries and aesthetics are considered. LÄS MER

  4. 3. Theoretical experiment of GISSMO failure model for Advanced High Strength Steel

    Magister-uppsats, Högskolan Väst/Avdelningen för produktionssystem (PS)

    Författare :Yueyue Wang; [2017]
    Nyckelord :Failure model; Theoretical experiment; AHSS; Triaxiality;

    Sammanfattning : When developing an electric vehicle, it is essential to evaluate the deformation in and around the battery box for different crash scenarios, and it is necessary to develop a more advanced model that would take into account all the stress modes. Thanks to the excellent properties of Advanced High Strength Steel (AHSS) combine with high strength for more safety and weight reduction for less exhaust emission, AHSS is more and more commonly used in automobile industry. LÄS MER

  5. 4. Micromechanical study of PFZ in aluminum alloys

    Master-uppsats, KTH/Hållfasthetslära (Inst.)

    Författare :Hossein Shariati; [2016]
    Nyckelord :precipitate-free zones; strain gradient plasticity; mikromekanik;

    Sammanfattning : There are a number of experiments showing that the ductility of aluminum alloys decreases during age-hardening heat treatment. Observing the grains of age-hardened aluminum alloys at the micron scale, one can notice that there are precipitate-free zones (PFZs) along the grain boundaries. LÄS MER

  7. 5. Finite element modeling of straightening of thin-walled seamless tubes of austenitic stainless steel

    Kandidat-uppsats, Högskolan Dalarna/Materialteknik

    Författare :Robert Johansson; [2016]
    Nyckelord :finite element method; FEM; FEA; straightening of tube; arc height; ovalization; roller angle; plastic strain.;

    Sammanfattning : During this thesis work a coupled thermo-mechanical finite element model (FEM) was builtto simulate hot rolling in the blooming mill at Sandvik Materials Technology (SMT) inSandviken. The blooming mill is the first in a long line of processes that continuously or ingotcast ingots are subjected to before becoming finished products. LÄS MER