Sökning: "beam-to-beam contact"

Hittade 2 avhandlingar innehållade orden beam-to-beam contact.

  1. 1. Robust Formulations for Beam-to-Beam Contact

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Hamid Reza Motamedian; KTH.; [2016]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Structures; Finite Element Methods; Solid Mechanics; Hållfasthetslära;

    Sammanfattning : Contact between beam elements is a specific category of contact problems which was introduced by Wriggers and Zavarise in 1997 for normal contact and later extended by Zavarise and Wriggers to include tangential and frictional contact. In these works, beam elements are assumed to have rigid circular cross-sections and each pair of elements cannot have more than one contact point. LÄS MER

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

    Detta är en avhandling från KTH Royal Institute of Technology

    Författare :Hamid Reza Motamedian; KTH.; [2018]
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER