Sökning: "forming simulation"

Visar resultat 16 - 20 av 149 avhandlingar innehållade orden forming simulation.

  1. 16. Macro-Geometric Defects, A numerical and experimental study of springback and surface defects

    Författare :Alf Andersson; Industriell Produktion; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Simulation; Sheet-metal forming; Finite element analysis; Information exchange; Springback; Surface defects; Drawbead; Process analyse; Optimisation; materialteknik; Materiallära; Material technology;

    Sammanfattning : Today, shortened lead-times in the automotive industry have dramatically increased the need for more efficient development methods at every stage of the process development chain. In order to decrease the long lead-time for producing a forming tool, sheet-metal-forming simulation was introduced. LÄS MER

  3. 17. Grid-forming wind power plants

    Författare :Anant Narula; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wind power plants WPPs ; grid-forming GFM ; inertia; Ancillary services; frequency support; coordination; current limitation; energy storage systems ESS ; transient stability;

    Sammanfattning : With growing concerns over climate change, the power system is witnessing an unprecedented growth in electricity generation from intermittent renewable energy sources (RES) such as wind and solar, which are commonly interfaced to the grid by power-electronic converters. However, increasing the penetration level of converter-interfaced generation units reduces the number of synchronous generators (SGs) in the grid that provide system services to support voltage and frequency, either inherently or through mandatory requirements and market products. LÄS MER

  4. 18. Concepts for hot sheet metal forming of titanium alloys

    Författare :Eva-Lis Odenberger; Roger Reed; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hot sheet metal forming; Titanium; FE simulation; Validation; Springback; HCP; Varmforming; Titan; FE simulering; Validering; Återfjädring; HCP; Hållfasthetslära; Solid Mechanics;

    Sammanfattning : To increase the competitiveness of the Swedish aero engine industry alternative manufacturing methods for load carrying aero engine structures are desired, in order to reduce product cost and enable weight reduction and thereby fuel consumption. Traditionally, these structures mainly consist of large-scaled single castings of e.g. LÄS MER

  5. 19. Modelling and simulation of the roll forming process

    Författare :Michael Lindgren; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material Mechanics; Materialmekanik;

    Sammanfattning : One of the first decisions to make when a new roll forming line is designed is the number of forming steps needed to produce a profile. This is dependent on the material properties, the cross-section geometry and the tolerance requirements. LÄS MER

  7. 20. Simulation of Material Behavior in Metal Forming Processes

    Författare :Håkan Hallberg; Hållfasthetslära; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Constitutive models regarding the behavior of metallic materials during forming processes are formulated and implemented. Mechanisms such as phase transformation, large deformations, plastic dissipation in form of heat and viscoplastic behavior in the material is adressed... LÄS MER