Sökning: "Anisotropy"

Visar resultat 1 - 5 av 381 avhandlingar innehållade ordet Anisotropy.

  1. 1. Transverse anisotropy in softwoods Modelling and experiments

    Detta är en avhandling från Stockholm : KTH

    Författare :Carl S. Modén; KTH.; [2006]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Softwood; Cellular solid; Anisotropy; Deformation mechanisms; TECHNOLOGY Materials science; TEKNIKVETENSKAP Teknisk materialvetenskap;

    Sammanfattning : Transverse anisotropy is an important phenomenon of practical and scientific interest. Although the presence of ray tissue explains the high radial modulus in many hardwoods, experimental data in the literature shows that this is not the case for pine. LÄS MER

  2. 2. Fatigue Anisotropy in Forged Components

    Detta är en avhandling från Chalmers University of Technology

    Författare :Cornelius Temmel; Chalmers tekniska högskola.; Chalmers University of Technology.; [2007]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Konstruktionsmaterial; Construction materials; Anisotropy; Steel; Forging; Inclusion; Manganese Sulfide; Inclusion Cluster; Quenching Crack; Machinability; Low Sulfur; Isotropic Quality;

    Sammanfattning : Ever-growing requirements on combustion engine efficiency of motor vehicles demand increasing service loads in powertrain components. Optimization of component material is therefore inevitable. A major detriment with many forged transmission components is their anisotropic mechanical behavior, not least during cyclic loading. LÄS MER

  3. 3. Determination of Coefficient of Friction and Anisotropy in Metalworking

    Detta är en avhandling från Stockholm : Industriell produktion

    Författare :Han Han; KTH.; [2003]
    Nyckelord :Coefficient of Friction; anisotropy; flow stress; modified two-specimen method MTSM and FE-analysis;

    Sammanfattning : The work material in metal working operations always showssome kind of anisotropy. To simplify the theoretical analysis,anisotropy is usually neglected and the material is assumed tobe isotropic, especially in determination of coefficients offriction. LÄS MER

  4. 4. On the modeling of large ratcheting strains and anisotropy in pearlitic steel

    Detta är en avhandling från Chalmers University of Technology

    Författare :Göran Johansson; Chalmers tekniska högskola.; Chalmers University of Technology.; Chalmers tekniska högskola.; Chalmers University of Technology.; [2006]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fastkroppsmekanik; Solid mechanics; Large strains; Kinematic hardening; Ratcheting; Anisotropy; Plasticity;

    Sammanfattning : Thermodynamically consistent constitutive material models for describing the large strain response of polycrystalline metals are proposed. Emphasis is put on the multiaxial ratcheting under cyclic loading and the evolution of anisotropy in pearlitic steel. LÄS MER

  5. 5. Anisotropy in pearlitic steel subjected to rolling contact fatigue - modelling and experiments

    Detta är en avhandling från Chalmers University of Technology

    Författare :Nasim Larijani; Chalmers tekniska högskola.; Chalmers University of Technology.; [2014]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Anisotropy; plasticity; pearlitic steel; Rolling Contact Fatigue; crack propagation; High Pressure Torsion;

    Sammanfattning : In rails and wheels subjected to severe rolling/sliding contact, large plastic deformations accumulate in the surface layer. This decreases the fatigue resistance of components and makes this layer prone to formation of common rolling contact related defects. LÄS MER