Sökning: "Paperboard modelling"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden Paperboard modelling.

  1. 1. Validation of An Iteration Free Material Model for Paperboard (NEO)

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

    Författare :Samuel Thomas Staines; [2022]
    Nyckelord :Paperboard; orthotropic; Constitutive equilibrium free; Non-linear; Curve fit constitutive relation; switch-wise history dependence; total formulation; explicit constitutive relation; In-plane; Elastic-plastic; Technology and Engineering;

    Sammanfattning : The NEO model, developed by Lindström (2019) for paperboard, is a non-linear material model that utilizes empirically based constitutive relations with switches to mimic elastic-plastic responses. Due to the explicit definition of the constitutive relations, the NEO model does not require a constitutive equilibrium loop. LÄS MER

  3. 2. Prediction of paperboard thickness and bending stiffness based on process data

    Master-uppsats, KTH/Hållfasthetslära (Avd.)

    Författare :Sacha Vandenbossche; [2019]
    Nyckelord :;

    Sammanfattning : Bending stiness is one of the most important mechanical properties in paperboard making,giving rigidity to panels and boxes. This property is currently only possible to measure bydestructive measure o the production line. LÄS MER

  4. 3. Sharp Edge Cutting through Paperboard

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Hållfasthetslära

    Författare :Daniel Jern; August Leek; [2017]
    Nyckelord :Slitting; Cutting; Fracture mechanics; Fracture modelling; Crack propagation modelling; Paperboard modelling; Technology and Engineering;

    Sammanfattning : The aim of this thesis is to investigate the micro mechanical damage and the failure of paperboard during sharp edge cutting. Tetra Pak is at the very forefront of the food packaging industry and in order to keep this market position, continuous improvements are of great importance. LÄS MER

  5. 4. Factors affecting the Relative Crease Strength of paperboard

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Hållfasthetslära

    Författare :Oskar Smedman; [2017]
    Nyckelord :paperboard; paper mechanics; creasing; solid mechanics; design of experiments; simulation; Technology and Engineering;

    Sammanfattning : Paperboard is frequently used as a base material in packages. There is folding involved in the conversion process, where a package is formed from a paperboard sheet. However, because direct folding causes undesirable effects such as wrinkles, it must first be creased. LÄS MER

  7. 5. 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