Sökning: "damping"

Visar resultat 6 - 10 av 366 avhandlingar innehållade ordet damping.

  1. 6. A study of active-passive damping treatments

    Författare :Hélène Illaire; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; active vibration control; damping mechanisms; active constrained layers;

    Sammanfattning : Active Constrained Layer (ACL) treatment is a vibration-damping treatment which consists of a viscoelastic layer constrained by an actuator. It dissipates energy simultaneously by the shearing of the viscoelastic layer and by the action of the actuator. LÄS MER

  3. 7. Polymeric systems for constrained-layer damping

    Författare :Jonas Öborn; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SEBS blends; metal-polymer-metal laminate; core-shell latex; constrained-layer damping; mechanical loss factor; fillers; glass transition; LIPN;

    Sammanfattning : .... LÄS MER

  4. 8. Vibration mitigation of high-speed railway bridges : Application of damping devices in theory and practice

    Författare :Sarah Tell; Raid Karoumi; Andreas Andersson; Ülker-Kaustell Mahir; José Maria Goicolea; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vibration mitigation; high-speed railway bridges; damping devices; retrofit; numerical analysis; hybrid simulation; field experiment; vibrationsdämpning; järnvägsbroar för höghastighetståg; dämpare; eftermonteringsmetod; numerisk analys; hybridsimulering; fältförsök; Structural Engineering and Bridges; Bro- och stålbyggnad;

    Sammanfattning : The dynamic response of railway bridges is an important aspect to consider, as the repetitive loading from passing trains may result in excessive vibrations of the bridge deck. Several design criteria are developed in order to assure the structural safety and passenger comfort during train crossings of a bridge. LÄS MER

  5. 9. Gilbert damping of doped permalloy from first principles calculations

    Författare :Fan Pan; Lars Bergqvist; Peter Svedlindh; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Gilbert damping; DFT; Permalloy; SPR-KKR; Spin stiffness; Fysik; Physics;

    Sammanfattning : The dynamic process of how fast a spintronic device can be switched from one state to another is characterized by the Gilbert damping parameter. It has been found that the Gilbert damping along with other intrinsic properties in permalloy, can be tuned by different dopants and doping concentration. LÄS MER

  7. 10. Matter and damping effects in neutrino mixing and oscillations

    Författare :Mattias Blennow; Tommy Ohlsson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering physics; Neutrino oscillations; neutrino mixing; matter effects; damping effects; the day-night effect; solar neutrinos; Teknisk fysik; Engineering physics; Teknisk fysik;

    Sammanfattning : This thesis is devoted to the study of neutrino physics in general and the study of neutrino mixing and oscillations in particular. In the standard model of particle physics, neutrinos are massless, and as a result, they do not mix or oscillate. LÄS MER