Sökning: "numerical bond model"

Visar resultat 1 - 5 av 29 avhandlingar innehållade orden numerical bond model.

  1. 1. Structural Behaviour of Concrete Railway Sleepers

    Detta är en avhandling från Chalmers University of Technology

    Författare :Rikard Gustavson; Chalmers tekniska högskola.; Chalmers University of Technology.; [2002]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Samhällsbyggnadsteknik och arkitektur; Civil engineering and architecture; sleeper; dynamic loads; bond; strand; bond mechanism; concrete; three-wire strand; pull-through tests; steel encased; push-in tests; finite element analysis; numerical bond model;

    Sammanfattning : The railway concrete sleeper is an important part of the railway track structure. The sleeper member requires substantial engineering skills during the design and manufacturing process in order to fulfil the requirements set by modern train traffic. LÄS MER

  2. 2. Numerical Complexity Analysis of Weak Approximation of Stochastic Differential Equations

    Detta är en avhandling från Stockholm : KTH

    Författare :Raul Tempone Olariaga; KTH.; [2002]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Adaptive methods; a posteriori error estimates; stochastic differential equations; weak approximation; Monte Carlo methods; Malliavin Calculus; HJM model; option price; bond market; stochastic elliptic equation; Karhunen-Loeve expansion; numerical co; MATHEMATICS Applied mathematics Numerical analysis; MATEMATIK Tillämpad matematik Numerisk analys;

    Sammanfattning : The thesis consists of four papers on numerical complexityanalysis of weak approximation of ordinary and partialstochastic differential equations, including illustrativenumerical examples. Here by numerical complexity we mean thecomputational work needed by a numerical method to solve aproblem with a given accuracy. LÄS MER

  3. 3. Bond and Anchorage of Ribbed Bars in High-Strength Concrete

    Detta är en avhandling från Chalmers University of Technology

    Författare :Jonas Magnusson; Chalmers tekniska högskola.; Chalmers University of Technology.; [2000]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Samhällsbyggnadsteknik och arkitektur; Civil engineering and architecture; high-strength concrete; normal strength concrete; anchorage; bond; ribbed bars; pull-out tests; beam tests; confinement; non-linear finite element analysis;

    Sammanfattning : For structural utilisation of high-strength concrete, a good understanding of the bond and anchorage behaviours of ribbed bars in this specific material is essential. The research project aims to increase the knowledge of bond and anchorage behaviours of ribbed bars in high-strength concrete. LÄS MER

  4. 4. Interaction between shotcrete and rock experimental and numerical study

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Lars Malmgren; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och Berganläggningsteknik;

    Sammanfattning : At LKAB’s underground mines in Malmberget and Kiruna in northern Sweden shotcrete and rock bolts are the main rock support elements. A safe working environment for the miners and high accessibility to the mine are important issues. LÄS MER

  5. 5. Electronic and Vibrational Coherence in Photosynthetic and Model Systems

    Detta är en avhandling från Chemical Physics, Lund University

    Författare :Mirianas Chachisvilis; Lunds universitet.; Lund University.; [1996]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Kemi; Chemistry; Ultrafast relaxation; Porphyrins; Delocalization; Anisotropy; Wavepacket; Vibrational Coherence; Excitons; Electronic coherence; Energy transfer; Femtosecond spectroscopy; Photosynthesis;

    Sammanfattning : Ultrafast optical response and excitation energy dynamics in light harvesting pigment-protein complexes and in a few model systems have been studied both experimentally and theoretically. Femtosecond light pulses were employed to excite the system and monitor the subsequent time evolution of the transient absorption kinetics and anisotropy. LÄS MER