Sökning: "force constants"

Visar resultat 1 - 5 av 52 avhandlingar innehållade orden force constants.

  1. 1. Modelling of muscular force induced by non-isometric contraction

    Författare :Natalia Kosterina; Anders Eriksson; Michael Günther; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Skeletal muscle; Muscular force; Concentric contractions; Eccentric con- tractions; History effect; Force modification; Muscle model; Musculoskeletal model;

    Sammanfattning : The main objective of the study was to investigate and simulate skeletal muscleforce production during and after isometric contractions, active muscle lengtheningand active muscle shortening. The motivation behind this work was to improve thedominant model of muscle force generation based on the theories of Hill from 1938. LÄS MER

  3. 2. Development and application of techniques for predicting and analysing phonon-derived materials properties

    Författare :Fredrik Eriksson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Lattice Thermal Conductivity; Force Constants; Green- Kubo; Peierls-Boltzmann Transport; Molecular Dynamics;

    Sammanfattning : The thermodynamic properties of materials are of great interest for both scientists and engineers. A large contribution to many properties stems from the vibrational motion of the atoms in the material. An understanding of the dynamics of the vibrating atoms is therefore important for many other areas as well, including, e.g. LÄS MER

  4. 3. Aerodynamics of Vertical Axis Wind Turbines : Development of Simulation Tools and Experiments

    Författare :Eduard Dyachuk; Hans Bernhoff; Sandra Eriksson; Anders Goude; Mac Gaunaa; Uppsala universitet; []
    Nyckelord :wind power; vertical axis turbine; H-rotor; simulations; streamtube model; vortex model; dynamic stall; measurements; blade; force; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Sammanfattning : This thesis combines measurements with the development of simulation tools for vertical axis wind turbines (VAWT). Numerical models of aerodynamic blade forces are developed and validated against experiments. The studies were made on VAWTs which were operated at open sites. LÄS MER

  5. 4. Atomic-scale investigation of interfacial structures in WC-Co at finite temperatures

    Författare :Erik Fransson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; complexions; phase diagrams; interfaces; force constants; cluster expansions; atomic-scale modeling; free energies; cemented carbides; WC--Co;

    Sammanfattning : WC-Co cemented carbides combine superb hardness with high toughness making them ideal for usage in high-speed machining of steels and in wear resistance tools. These excellent mechanical properties are to a large extent dependent on the microstructure and thus the interfacial properties of the material. LÄS MER

  7. 5. Beyond Perturbation: Modeling Anharmonicity in Materials

    Författare :Fredrik Eriksson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Molecular Dynamics; Force Constants; Lattice Thermal Conductivity; Green-Kubo; Peierls-Boltzmann Transport Equation; Lattice dynamics; Phonons; Anharmonicity;

    Sammanfattning : The vibrational motion of atoms is essential for understanding condensed matter systems. It directly influences numerous thermodynamic properties with significant technological implications. LÄS MER