Sökning: "fracture zone"

Visar resultat 1 - 5 av 102 avhandlingar innehållade orden fracture zone.

  1. 1. Crack growth and development of fracture zones in plain concrete and similar materials

    Författare :Per-Erik Petersson; Avdelningen för Byggnadsmaterial; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tensile strength; finite element method; test methods; fracture energy; fracture mechanics; concrete; cracking; finita element; brottmekanik; beräkningsmetoder; oarmerad betong; sprickutbredning; sprickor; betong; fracture zone; tensile stress-strain curve;

    Sammanfattning : [abstract missing].... LÄS MER

  3. 2. In-Plane Fracture of Paper

    Författare :Johan Tryding; Institutionen för byggvetenskaper; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Byggnadsteknik; Building construction; Paper; Fracture energy; Strain softening; Localized damage; Fracture mechanics;

    Sammanfattning : The in-plane failure of paper is studied in this work by means of a cohesive crack model from experimental as well as theoretical perspectives. Localized damage at in-plane tension of short paper strips is studied for low strain rates. LÄS MER

  4. 3. Fracture toughness properties of a welded duplex stainless steel

    Författare :Henrik Sieurin; KTH; []
    Nyckelord :duplex stainless steel; fracture toughness; brittle fracture; heat affected zone; austenite reformation;

    Sammanfattning : .... LÄS MER

  5. 4. Behaviour of fracture process zones in concrete influenced by simultaneously applied normal and shear displacements

    Författare :Manouchehr Hassanzadeh; Avdelningen för Byggnadsmaterial; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; softening; mixed mode; fictitious crack model; concrete; deformationer; betong; brottmekanik; hållfasthet; brotthållfasthet; spänningar; skjuvspänningar; sprickor; beräkningsmodeller; brottenergi; teori; laboratorieförsök; interlock; crack path; diagonal crack; microcracking; instability; fracture energy; fracture mechanics; shear; tension; process zone;

    Sammanfattning : The thesis deals with the determination of the post peak behaviour of concrete in pure tension, and combined tension (compression) and shear. A test arrangement has been developed in order to determine the post peak behaviour of concrete expressed as stress - displacement curves. LÄS MER

  7. 5. On the Modelling of Fracture Using Strong Discontinuities

    Författare :Martin Fagerström; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fracture; strong discontinuity; material forces; finite deformations; FEM;

    Sammanfattning : The major concern of this work is the constitutive and numerical modelling of fracture,based on strong discontinuity formulations. More particularly, an extended finiteelement approach is used, where the total displacement is separated in two mutuallyindependent fields, representing the continuous and discontinuous displacement respectively. LÄS MER