Search for dissertations about: "Numerical Simulation extrusion"

Showing result 1 - 5 of 7 swedish dissertations containing the words Numerical Simulation extrusion.

  2. 1. Simulation of Stainless Steel Tube Extrusion

    Author : Sofia Hansson; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Extrusion; finite element method; stainless steel; physically based material model; dislocation density; Simulering av extrusion av rostfria rör; Material Mechanics;

    Abstract : The simulation of hot extrusion processes is a difficult and challenging problem in process modeling. This is due to very large deformations, high strain rates and large temperature changes during the process. READ MORE

  4. 2. A Lagrangian-Eulerian simulation method for viscoelastic flows applied to adhesive joining

    Author : Simon Ingelsten; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; volume of fluid; computational fluid dynamics; immersed boundary methods; viscoelastic flow; adhesive joining;

    Abstract : Viscoelastic flows are important for many industrial processes, such as adhesive joining, polymer extrusion and additive manufacturing. Numerical simulations enable virtual evaluation and product realization, which can support the design phase and reduce the amount of costly physical testing. However, such applications are challenging to simulate. READ MORE

  5. 3. Ultra high-pressure compaction of powder

    Author : Sven Berg; Javier Oliver; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hållfasthetslära; Solid Mechanics;

    Abstract : Sintering at high-pressure improves the properties of the material, either through new sintering aids becoming available or through improving intergranular bonding. This gives the manufactured products potential advantages like faster cut rates, and more precise and cleaner production methods that add up to cost efficiency and competitive edge. READ MORE

  6. 4. Chromium martensitic hot-work tool steels : damage, performance and microstructure

    Author : Johnny Sjöström; Jens Bergström; Farhad Rezai-Aria; Karlstads universitet; []
    Keywords : Hot-work tool steel; thermal fatigue; microstructure; Materialteknik; Materials Engineering;

    Abstract : Chromium martensitic hot-work tool steel (AISI H13) is commonly used as die material in hot forming techniques such as die casting, hot rolling, extrusion and hot forging. They are developed to endure the severe conditions by high mechanical properties attained by a complex microstructure. READ MORE

  7. 5. Constitutive models based on dislocation density : formulation and implementation into finite element codes

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

    Abstract : 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. READ MORE