Search for dissertations about: "critical plane approach"

Showing result 1 - 5 of 26 swedish dissertations containing the words critical plane approach.

  2. 1. Towards a Scalable and Low-Latency Softwarized Mobile Packet Core Network

    Author : Van-Giang Nguyen; Anna Brunström; Karl-Johan Grinnemo; Javid Taheri; Christian Esteve Rothenberg; Karlstads universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mobile Packet Core; Evolved Packet Core; 5G; SDN; NFV; Scalability; Control Plane; User Plane; MME; UPF; VPP; Load Balancing; Auto-Scaling; Time-Critical; Low-Latency; Smart Grid; GOOSE; Computer Science; Datavetenskap;

    Abstract : The mobile packet core – a central part of the overall mobile cellular network – has a long history of evolution. Through the years, its architecture has been drastically changed to meet the demand coming from the fast growth in the number of devices as well as the introduction of new types of applications and services. READ MORE

  4. 2. Modelling of constitutive and fatigue behaviour of a single-crystal nickel-base superalloy

    Author : Daniel Leidermark; Kjell Simonsson; Johan Moverare; Sören Sjöström; Roger C. Reed; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Single-crystal nickel-base superalloys; crystal plasticity; tension compression asymmetry; rafting; fatigue initiation; critical plane approach; Engineering mechanics; Teknisk mekanik;

    Abstract : In this licentiate thesis the work done in the project KME410 will be presented. The overall objective of this project is to evaluate and develop tools for designing against fatigue in single-crystal nickel-base superalloys in gas turbines. READ MORE

  5. 3. Rolling Contact Fatigue of Railway Rails with Emphasis on Crack Initiation

    Author : Jonas Ringsberg; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; variable amplitude; crack closure; rolling contact fatigue; crack propagation; railway rails; damage accumulation; critical plane approach; crack initiation; plasticity; multiaxial fatigue;

    Abstract : Increased traffic density and the heavier axle loads of modern trains have led to severe problems with rolling contact fatigue (RCF) which cause initiation of surface cracks in railheads. In this thesis, a specific type of surface crack, the head check, is studied numerically with emphasis on fatigue crack initiation. READ MORE

  6. 4. Crystal plasticity and crack initiation in a single-crystal nickel-base superalloy : Modelling, evaluation and applications

    Author : Daniel Leidermark; Kjell Simonsson; Johan Moverare; Sören Sjöström; Hannu Hänninen; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Single-crystal superalloy; Crystal plasticity; Fatigue crack initiation; Critical plane model; Theory of critical distance; Rafting; Tension compression asymmetry;

    Abstract : In this dissertation the work done in the projects KME-410/502 will be presented.The overall objective in these projects is to evaluate and develop tools for designingagainst fatigue in single-crystal nickel-base superalloys in gas turbines. READ MORE

  7. 5. Micromechanics approach to stiffness characterization of woven composites

    Author : Normunds Jekabsons; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymera konstruktionsmaterial; Polymeric Composite Materials;

    Abstract : Thesis consider the stiffness of woven composites, methods of its calculation and stiffness reduction due to damage accumulation during the service. First, reliable methods for stiffness calculation of undamaged woven composites are considered. There are a large amount of simple approximate methods available in literature. READ MORE