Search for dissertations about: "elasto-plasticity"

Found 4 swedish dissertations containing the word elasto-plasticity.

  1. 1. Co-rotational shell element for elasto-plastic, quasi-static problems

    University dissertation from Stockholm : Mekanik

    Author : Aleksandar Filipovski; KTH.; [2002]
    Keywords : elasto-plasticity; shell element; co-rotational;

    Abstract : .... READ MORE

  2. 2. Plasticity Driven Damage and Void Growth

    University dissertation from Solid Mechanics, Lund University, P O Box 118, SE-221 00 Lund, Sweden

    Author : Mattias Olsson; Lund University.; Lunds universitet.; Lund University.; Lunds universitet.; [2004]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Termisk teknik; termodynamik; Maskinteknik; hydraulik; vakuumteknik; vibrationer; akustik; Thermal engineering; applied thermodynamics; vibration and acoustic engineering; vacuum technology; hydraulics; void growth; Mechanical engineering; damage evolution; elasto-plasticity; thermodynamics;

    Abstract : Plasticity induced damage evolution is considered using a thermodynamical approach. Different postulates on how to include the effects of damage in the constitutive equations have been studied. The results reveal that a mapping, similar to that of the stress, of both the kinematic and isotropic hardening variables is to be preferred. READ MORE

  3. 3. Co-rotational beam elements in instability problems

    University dissertation from Stockholm : KTH

    Author : Jean-Marc Battini; KTH.; [2002]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; instability; co-rotational mehtod; branch-switching; beam element; warping; plastic buckling. post-bifurcation; NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : The purpose of the work presented in this thesis is to implement co-rotational beam elements and branch-switching procedures in order to analyse elastic and elastoplasticinstability problems. For the 2D beam elements, the co-rotational framework is taken from Crisfield [23]. READ MORE

  4. 4. Effects of deep excavations in soft clay on the immediate sourroundings-Analysis of the possibility to predict deformations and reactions against the retaining system

    University dissertation from Stockholm : KTH

    Author : Anders Kullingsjö; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MIT-S1; Sheet pile wall; Soil-structure interaction; Strain; Stress; Ground surface settlement; Finite element method; Case history; Shear test; Shear strength; Pore pressure; Analysis; Constitutive models; Plane strain; Elastoplasticity; Laboratory tests; Factor of safety; Stiffness; e-ADP; Earth pressure; Anisotropy; Soft Clay; Deep excavation; Retaining wall; Shear stress; Deformation;

    Abstract : When excavating in an urban environment, the evaluation of the magnitude and distribution of ground movements is an important part of the design process, since excessive movements can damage adjacent buildings and utilities. In order to minimize movement of the surrounding soil, a retaining wall support system is used for deep excavations to provide lateral support. READ MORE