Search for dissertations about: "ductile fracture"

Showing result 1 - 5 of 61 swedish dissertations containing the words ductile fracture.

  2. 1. Microstructural aspects of the ductile-to-brittle transition in pressure vessel steels

    Author : Torbjörn Narström; KTH; []
    Keywords : dectile-to-brittele transition; cleavage fracture; ductile fracture; fracture mechanics; constraint; initiation; pressure vessel steel; cleavage fracture stress;

    Abstract : .... READ MORE

  4. 2. Experiments and modelling of fracture initiation at impact

    Author : Ola Wall; Hållfasthetslära; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vibration and acoustic engineering; vacuum technology; hydraulics; Viscoplasticity; Mechanical engineering; Ductile; Brittle; Dynamic; Fracture; Maskinteknik; hydraulik; vakuumteknik; vibrationer; akustik; Material technology; Materiallära; materialteknik;

    Abstract : The thesis addresses different questions, each necessary in the understanding of dynamic fracture initiation and crack propagation in steel. Emphasis lays on dynamic crack propagation experiments performed in the ductile to brittle transition region and possible conclusions, that can be drawn from them. READ MORE

  5. 3. Numerical models of ductile crack growth

    Author : Annika Trädegård; KTH; []
    Keywords : solid mechanics; nonlinear fracture mechanics; elastic-plastic fracture; finite element method; remeshing; constraint; two-parameter characterisation; stable ductile crack growth; cleavage; weibull stress; void growth;

    Abstract : .... READ MORE

  6. 4. Ductile damage modeling of the machining process

    Author : SENAD RAZANICA; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mesh dependence; Johnson-Cook; Ductile fracture; Thermodynamics; Machining simulation; Damage driving energy; Damage evolution; Damage threshold criterion;

    Abstract : Machining processes are among the most common manufacturing processes for producing components used on a daily basis. It is a complex material removal process. Today, the research and development within the manufacturing industry is addressed by cost efficient numerical simulation strategies rather than by costly experimental procedures. READ MORE

  7. 5. Computational modelling of machining - Mesh objective ductile damage modelling

    Author : SENAD RAZANICA; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ductile damage; fracture modeling; Mesh dependence; machining process; visco-plastic Johnson- Cook; simulation tool; FEM;

    Abstract : AbstractTo strengthen the competitiveness the manufacturing industry strives for a continuousdevelopment of cost efficient manufacturing processes and improved product quality.These research and development issues are addressed by increasing the implementationof simulation tools based on finite element method (FEM). READ MORE