Search for dissertations about: "Paper mechanics"

Showing result 1 - 5 of 311 swedish dissertations containing the words Paper mechanics.

  1. 1. A Novel Fiber Interaction Method for Simulation of Early Paper Forming

    University dissertation from Göteborg : Chalmers University of Technology

    Author : Gustav Kettil; Göteborgs universitet.; Gothenburg University.; [2016]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fiber suspension flow model; object-object interaction model; contact forces; lay down simulations; paper forming; immersed boundary methods;

    Abstract : In the forming section of a paper machine, a fiber suspension is flowing down onto a forming fabric, and a paper structure is formed. By using computer simulations this process can be studied, attaining new knowledge helping to improve paper quality and machine efficiency. READ MORE

  2. 2. Beam-to-Beam Contact and Its Application to Micromechanical Simulation of Fiber Networks

    University dissertation from KTH Royal Institute of Technology

    Author : Hamid Reza Motamedian; KTH.; [2018]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fiber network; beam-to-beam contact; rotational contact; non-consistent; simulation; finite element; multiscale; microscale; micromechanics; paper; refining; beating; fine; hygroexpansion; shrinkage; drying; Solid Mechanics; Hållfasthetslära;

    Abstract : This doctoral thesis covers the topic of modeling the three-dimensional fiber net- works with the finite element method. It contains the part addressing the numerical aspects of the modeling, namely, the contact formulation and application of the developed methods to the fundamental questions such as the effect of randomness in fiber properties and effect of fines and hygroexpansion. READ MORE

  3. 3. Modelling Damage Evolution and Fracture of Paper Materials

    University dissertation from Division of Solid Mechanics

    Author : Rickard Hägglund; Lunds universitet.; Lund University.; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Paper material; Fracture mechanics; Tensile strength; Fibre network; Continuum damage mechanics; Non-local theory;

    Abstract : This thesis contains six papers dealing with different aspects of damage and fracture in paper. The work addresses the problem of material length scales in the context of deformation and fracture of paper materials. READ MORE

  4. 4. Analytical and Parametric Study of Damped Vibrations in Gough-Stewart Platforms

    University dissertation from Division of Solid Mechanics

    Author : Behrouz Afzali Far; Lunds universitet.; Lund University.; [2014]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : This work establishes a comprehensive and fully parametric model for the damped vibrations of Gough-Stewart Platforms (GSPs) at symmetric configurations. It is noteworthy that in the literature a complete solution to this problem has not been presented. This work has been carried out in three stages which are the subjects of Papers I, II and III. READ MORE

  5. 5. Elastic Properties of Nanowires - an Atomistic Evaluation

    University dissertation from Division of Solid Mechanics

    Author : Pär Olsson; Lunds universitet.; Lund University.; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Popular Abstract in Swedish Stora framsteg har gjort det möjligt att, med dagens teknik, inte bara visualisera enskilda atomer, utan även utföra olika typer av operationer och manipulationer på atomskalan med stor precision rent experimentellt. Detta har möjliggjort tillverkning av komplexa nanostrukturer genom montering av komponenter av nanostorlek till större sammansatta system, vilket i sin tur har gett upphov till en rad nya banbrytande praktiska tillämpningar inom vitt skilda områden och discipliner. READ MORE