Search for dissertations about: "Kjell Simonsson"

Showing result 1 - 5 of 22 swedish dissertations containing the words Kjell Simonsson.

  1. 1. Finite element simulation of transformation plasticity in martensitic transformation

    Author : Kjell Simonsson; Sören Sjöström; Linköpings universitet; []
    Keywords : Phase transformations. transformation plasticity; micromechanical models; martensitic transformation; finite element simulations. thermodynamics; moving interface; mechanical dissipation; TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : This study is concerned with the simulation of transformation plasticity in martensitic transformation. In the first paper the concept of a transformation plasticity strain is introduced from a phenomenological point of view. READ MORE

  2. 2. Micro-mechanical FE-simulations of the plastic behaviour of steels undergoing martensitic transformation

    Author : Kjell Simonsson; Sören Sjöström; Marcel Berveiller; Linköpings universitet; []
    Keywords : Steel; martensitic transformation; grain constitution; finite element simulations; plastic behaviour; transformation kinetics; TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : This thesis is concerned with the mechanical behaviour of steels undergoing martensitic transformation. More specifically, the aim has been to develop a method to numerically stimulate the mean strain (or stress) response associated with a prescribed temperature and mean stress (or strain) variation. READ MORE

  3. 3. A Co-Simulation Approach for Hydraulic Percussion Units

    Author : Håkan Andersson; Daniel Leidermark; Kjell Simonsson; Daniel Hilding; Mikael Schill; Magnus Eek; Linköpings universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ENGINEERING AND TECHNOLOGY;

    Abstract : This Licentiate of Engineering thesis concerns modelling and simulation of hydraulic percussion units. These units are often found in equipment for breaking or drilling in rock and concrete, and are also often driven by oil hydraulics, in which complex fluid-structure couplings are essential for their operation. READ MORE

  4. 4. Robust optimisation of structures : Evaluation and incorporation of variations in simulation based design

    Author : David Aspenberg; Larsgunnar Nilsson; Kjell Simonsson; Niels Olhoff; Linköpings universitet; []
    Keywords : TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : This thesis concerns the robustness of structures considering various uncertainties. The overall objective is to evaluate and develop simulation based design methods in order to find solutions that are optimal both in the sense of handling typical load cases and minimising the variability of the response, i.e. robust optimal designs. READ MORE

  5. 5. High-Temperature Fatigue in a Steam Turbine Steel : Modelling of Cyclic Deformation and Crack Closure

    Author : Ahmed Azeez; Robert Eriksson; Kjell Simonsson; Daniel Leidermark; Magnus Hörnqvist Colliander; Linköpings universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Existing conventional thermal power plants are retrofitted for flexible operations to assist the transition toward more renewable energies. The deployment of many renewable energy power plants is necessary to achieve a clean environment with less pollution. READ MORE