Sökning: "dislocation"

Visar resultat 11 - 15 av 212 avhandlingar innehållade ordet dislocation.

  1. 11. Simulation of lattice defacts im metals

    Författare :Mattias Forsblom; KTH; []
    Nyckelord :lattice defect; dislocation; stacking fault; face-centered cubic structure; molecular dynamics; vibrational entropy;

    Sammanfattning : .... LÄS MER

  3. 12. Urban renewal planning versus local values : a study of modern urban policy and renewal processes and of their impact on a local community : with reference to the case of Gröna Gatan in Göteborg

    Författare :A. Reza Kazemian; Chalmers tekniska högskola; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Town planning; rationalism; dislocation; building act; architecture; urbanization; urban culture; conservation; demolition; urban renewal; functionalism; local community; modernism; social values;

    Sammanfattning : .... LÄS MER

  4. 13. Constitutive models based on dislocation density : formulation and implementation into finite element codes

    Författare :Konstantin Domkin; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Datorstödd maskinkonstruktion; Computer Aided Design;

    Sammanfattning : Correct description of the material behaviour is an extra challenge in simulation of the materials processing and manufacturing processes such as metal forming. Material models must account for varying strain, strain rate and temperature, and changing microstructure. LÄS MER

  5. 14. Numerical Modeling of Plasticity in FCC Crystalline Materials Using Discrete Dislocation Dynamics

    Författare :Arash Hosseinzadeh Delandar; Pavel Korzhavyi; Rolf Sandström; Mikko Alava; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Dislocations; crystal plasticity; discrete dislocation dynamics; Cu single crystal; high strain rate deformation; strain rate sensitivity; plastic anisotropy; slip band formation; Teknisk materialvetenskap; Materials Science and Engineering;

    Sammanfattning : Plasticity in crystalline solids is controlled by the microscopic line defects known as “dislocations”. Decisive role of dislocations in crystal plasticity in addition to fundamentals of plastic deformation are presented in the current thesis work. LÄS MER

  7. 15. Modelling of Dislocation Bias in FCC Materials

    Författare :Zhongwen Chang; Pär Olsson; Christophe Domain; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Irradiation induced void swelling is problematic for the application of austenitic steels under high dose irradiation. In this thesis, the swelling is characterized by dislocation bias. The dislocation bias is obtained using the finite element method, accounting for fcc copper and nickel under electron irradiation. LÄS MER