Sökning: "Vibration isolator"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Vibration isolator.

  1. 1. Magneto-sensitive rubber in the audible frequency range

    Författare :Peter Blom; Leif Kari; Luigi Bregant; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Magneto-sensitivity; Rubber; Audible frequency range; Amplitude dependence; Vibration isolator; Fletcher-Gent effect; Stiffness; Acoustics; Akustik;

    Sammanfattning : The dynamic behaviour in the audible frequency range of magneto-sensitive (MS) rubber is the focus of this thesis consisting of five papers A-E. Paper A presents results drawn from experiments on samples subjected to different constant shear strains over varying frequencies and magnetic fields. LÄS MER

  3. 2. Magneto-sensitive elastomers in vibration isolation

    Författare :Ane Alberdi-Muniain; Leif Kari; N Gil-Negrete; Luigi Bregant; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Järnvägsgruppen - Effektiva tågsystem för godstrafik; Järnvägsgruppen - Effektiva tågsystem för godstrafik;

    Sammanfattning : Vibration isolators made of rubber are used in numerous engineeringapplications to isolate structures from undesirable effects of vibrations.However, once a vibration isolator is installed in an application, it is not possible to modify its characteristics to adjust to changing conditions. LÄS MER

  4. 3. Constitutive models of magneto-sensitive rubber under a continuum mechanics basis and the application in vibration isolation

    Författare :Bochao Wang; Leif Kari; Ines Lopez Arteaga; Vincent Coveney; KTH; []
    Nyckelord :Magneto-sensitive rubber; magnetic dependency; frequency dependency; amplitude dependency; temperature dependency; vibration isolation; Engineering Mechanics; Teknisk mekanik;

    Sammanfattning : Due to its durability, stretchability, relatively low stiffness and high damping, rubber is widely used in engineering anti-vibration fields. However, a major deficiency is that once installed, the mechanical properties of traditional rubber-based devices are fixed where its adaptability to various loading conditions is poor. LÄS MER

  5. 4. Structure-borne sound properties of vibration isolators

    Författare :Leif Kari; KTH; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : This thesis consists of four papers concerning the audibledynamic stiffness of a vibration isolator; includingmeasurements and theoretical modeling. The study focus isrubber isolators, being the most popular material in theaudible frequency domain - though the measurement principlealso applies to other resilient elements. LÄS MER

  7. 5. Exploring the vibration control potential of magneto-sensitive rubber

    Författare :Peter Blom; Leif Kari; James Busfield; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Applied mechanics; magneto-sensitive rubber; Teknisk mekanik; Engineering mechanics; Teknisk mekanik;

    Sammanfattning : Two new aspects of the dynamic behaviour in the audible frequency range of magneto-sensitive (MS) rubber are highlighted: the existence of an amplitude dependence of the shear modulus—referred to as the Fletcher–Gent effect—for even small displacements, and the appearance of large MS effects. These results have been obtained experimentally and are subsequently used to model two examples of magneto-sensitive rubber isolators to show how by means of MS rubber they can be improved. LÄS MER