Search for dissertations about: "Constitutive relations"

Showing result 1 - 5 of 52 swedish dissertations containing the words Constitutive relations.

  1. 1. Cemented Carbide Sintering : Constitutive Relations and Microstructural Evolution

    Author : Anders Petersson; KTH; []
    Keywords : Cemented carbides; Sintering; Constitutive relations; Microstructure; Densification; Modelling;

    Abstract : Cemented carbides based on tungsten carbide and cobalt arecommonly produced by a powder metallurgy route including liquidphase sintering. The pressed compact densifies to almost halfits volume during sintering due to pore elimination. READ MORE

  2. 2. Understanding European Arms Export Controls : Material Interests and Competing Norms

    Author : Mark Bromley; Thomas Jonter; Neil Cooper; Michael Brzoska; Stockholms universitet; []
    Keywords : SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; arms control; arms export controls; defence industry; dual-use export controls; EU; international relations; norms; organization theory; organized hypocrisy; Sweden; International Relations; internationella relationer;

    Abstract : This thesis seeks to better understand the formation and implementation of the restrictions that the EU and EU member states have imposed on exports of military and security equipment. Specifically, the thesis develops two norms-based theoretical frameworks for understanding how and why particular restrictions become integrated in states’ national and collective export controls, why others are rejected, and the different ways this integration occurs. READ MORE

  3. 3. Behaviour and modelling of a natural soft clay : triaxial testing, constitutive relations and finite element modelling

    Author : Bo Westerberg; Luleå tekniska universitet; []

    Abstract : The main objectives if the research project have been to create an experimental basis for a more general theoretical modelling of Swedish clays and to improve the knowledge of the mechanical behaviour of natural soft clays. Another objective has been to investigate the effects of end restraint on the mechanical behaviour obtained in triaxial tests, by means of numerical simulations. READ MORE

  4. 4. Multiresolution Continuum Theory and Dislocation Density Based Constitutive Relations

    Author : Hao Qin; Luleå tekniska universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material Mechanics; Materialmekanik; Centre - Centre for High Performance Steel CHS ; Centrumbildning - Centrum för högpresterande stål CHS ;

    Abstract : In classical description, the mechanical state of a material point depends on the variables defined at this point solely. It can integrate and catch some aspects of the material’s microstructure by conventional homogenization method. READ MORE

  5. 5. Experimental and Modelling Studies on the Spreading of Non-Aqueous Phase Liquids in Heterogeneous Media

    Author : Fritjof Fagerlund; Auli Niemi; Tissa Illangasekare; Karsten Jensen; Uppsala universitet; []
    Keywords : Hydrology; NAPL; Multi-phase flow; Modelling; Experiment design; Heterogeneity; Constitutive relations; Multi-constituent contaminants; Capillary pressure; Relative permeability; Hysteresis; Hydrologi;

    Abstract : Non-Aqueous Phase Liquids (NAPLs) include commonly occurring organic contaminants such as gasoline, diesel fuel and chlorinated solvents. When released to subsurface environments their spreading is a complex process of multi-component, multi-phase flow. READ MORE