Search for dissertations about: "element erosion"

Showing result 1 - 5 of 22 swedish dissertations containing the words element erosion.

  1. 1. On failure modelling in finite element analysis : material imperfections and element erosion

    Author : Mattias Unosson; Larsgunnar Nilsson; Kjell Simonsson; Lars Olovsson; Anders Eriksson; Linköpings universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; finite element method; element erosion; material failure; material imperfections; crack-tip; Solid mechanics; Fastkroppsmekanik;

    Abstract : This dissertation concerns failure modelling with material imperfections and element erosion in finite element analyses. The aim has been to improve the element erosion technique, which is simple to use and implement and also computationally inexpensive. READ MORE

  2. 2. An Experimental Study to Measure And Improve the Grout Penetrability

    Author : Ali Nejad Ghafar; Stefan Larsson; Almir Draganovic; Ulf Erik Lindblom; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Penetrability; Filtration; Erosion; Cement-based grout; Grout spread; Grout penetrability measurement; Dynamic grouting; Instantaneous variable pressure; Civil and Architectural Engineering; Byggvetenskap;

    Abstract : An essential demand in any underground facility is to seal it against the water ingress to reduce the time and cost of the construction and the corresponding environmental hazards. To achieve this, obtaining sufficient grout spread is of great importance. READ MORE

  3. 3. Numerical analyses of stability of a gradually raised tailings dam

    Author : Muhammad Auchar Zardari; Luleå tekniska universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tailings dams; consolidation; rockfill berms; slope stability; corner; internal erosion; finite element analysis; Civil engineering and architecture - Geoengineering and mining engineering; Samhällsbyggnadsteknik och arkitektur - Geoteknik och gruvteknik; Soil Mechanics; Geoteknik;

    Abstract : Numerical analyses are presented in this thesis to address potential stability problems that may occur during gradual raisings and under seismic loading conditions of Aitik tailings dam in northern Sweden. The dam is mainly raised using upstream construction method. It is planned to raise the dam gradually in several stages. READ MORE

  4. 4. The soil as a source material in archaeology. : Theoretical considerations and pragmatic applications

    Author : Johan Linderholm; Roger Engelmark; Martin Bell; Umeå universitet; []
    Keywords : HUMANITIES; HUMANIORA; HUMANIORA; HUMANITIES; Environmental archaeology; Geoarchaeology; Prehistory; Soil phosphate; Magnetic susceptibility; Soil chemistry; Site formation processes; Soil erosion; Archaeology subjects; Arkeologiämnen; Archaeology; arkeologi;

    Abstract : This thesis deals with questions on various applications using soils and sediments as sources of information in archaeological research. Human environmental impact on soils and sediments, in terms of pollution, is a well known phenomenon as the industrialisation intensified during historical times and onwards and has left strong pollutive marks. READ MORE

  5. 5. Design of Microstructures in Thermal Barrier Coatings - A Modelling Approach

    Author : Mohit Gupta; Chalmers University of Technology; []
    Keywords : microstructure; thermal conductivity; Young‘s modulus; design; finite element modelling; lifetime; thermal barrier coatings;

    Abstract : Plasma sprayed Thermal Barrier Coating systems (TBCs) are commonly used for thermal protection of components in modern gas turbine application such as power generation, marine and aero engines. The material that is most commonly used in these applications is Yttria Stabilized Zirconia (YSZ) because of this ceramic‘s favourable properties, such as low thermal conductivity, phase stability to high temperature, and good erosion resistance. READ MORE