Search for dissertations about: "Constitutive modelling"

Showing result 1 - 5 of 107 swedish dissertations containing the words Constitutive modelling.

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

    University dissertation from Stockholm : Materialvetenskap

    Author : Anders Petersson; KTH.; [2004]
    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. Behaviour and modelling of a natural soft clay triaxial testing, constitutive relations and finite element modelling

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Bo Westerberg; Luleå tekniska universitet.; [1999]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Soil Mechanics; Geoteknik;

    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

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

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Fritjof Fagerlund; Uppsala universitet.; [2006]
    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

  4. 4. Simulation of welding and heat treatment modelling and validation

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Henrik Alberg; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Datorstödd maskinkonstruktion; Computer Aided Design;

    Abstract : Many aerospace components with complex geometry are fabricated from smaller parts using joining techniques such as welding. Welding and the heat treatment which usually follows, can result in unwanted deformation and stresses. READ MORE

  5. 5. Hydro-mechanical forming of aluminium tubes on constitutive modelling and process design

    University dissertation from Institutionen för konstruktions- och produktionsteknik

    Author : Mikael Jansson; Larsgunnar Nilsson; Odd Sture Hopperstad; [2006]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hydroforming; Aluminium Extrusions; Anisotropic material; TECHNOLOGY Engineering mechanics Solid mechanics; TEKNIKVETENSKAP Teknisk mekanik Fastkroppsmekanik;

    Abstract : Tube hydroforming is a forming method which has several advantages. By using pressure in combination with material feeding it is possible to manufacture products with high structural integration and tight dimensional tolerances. The forming method is especially suited for aluminium alloys which have a relatively low ductility. READ MORE