Sökning: "first natural frequency"

Visar resultat 6 - 10 av 71 uppsatser innehållade orden first natural frequency.

  1. 6. Vibrations in a high frequency clt floor panel - Measurement, prediction and evaluation

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

    Författare :André Wirthig; [2023]
    Nyckelord :Vibrations; High frequency floors; Sensitive equipment; Technology and Engineering;

    Sammanfattning : There is an increased need for floors that can accommodate different type of sensitive equipment [1]. Further, it is recommended to design these floors as high frequency floors (HFF) to be able to meet the stringent vibration criteria [1]. LÄS MER

  3. 7. Forced response numerical investigation of a transonic compressor rotor

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Mariana Pires Gonçalves Toco Dias; [2023]
    Nyckelord :Compressor; rotor; blisk; aeroelasticity; aerodynamic damping; CFD; transient; forced response;

    Sammanfattning : The present thesis discusses the forced response of a rotor’s bladed-disk when excited by the periodic force produced by a wake generator, or Inlet Guide Vane (IGV),with 8 equally-spaced blades. These components are part of an axial transonic compressor rig, moreover the Transonic Compressor Darmstadt 1 (TCD1), located at the Technical University of Darmstadt. LÄS MER

  4. 8. Utilisation of hardwood in cross-laminated timber - A numerical study on vibrations in floors

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

    Författare :Johannes Jonasson; Olle Karlsson; [2022]
    Nyckelord :hardwood; birch; beech; clt; cross-laminated timber; vibrations; floors; footfall; accelerations; Technology and Engineering;

    Sammanfattning : Cross-laminated timber (CLT) is an engineered wood product consisting of several layers of laminations bonded together with adhesives. In contrast to heavier construction materials, timber and other lightweight building materials are more prone to serviceability issues due to vibrations. LÄS MER

  5. 9. Predicting Location-Dependent Structural Dynamics Using Machine Learning

    Master-uppsats, KTH/Industriell produktion

    Författare :Markus Zink; [2022]
    Nyckelord :machine learning; artificial intelligence; gradient boosting; LightGBM; multilayer perceptron; prediction; chatter; vibration; structural dynamics; modal parameters; machine tool; tool centre point; work envelope;

    Sammanfattning : Machining chatter is an undesirable phenomenon of material removal processes and hardly to control or avoid. Its occurrence and extent essentially depend onthe kinematic, which alters with the position of the Tool Centre Point, of the machine tool. LÄS MER

  7. 10. Kunskap och förväntningar hos kaninägare i Sverige

    Uppsats för yrkesexamina på grundnivå, SLU/Dept. of Animal Environment and Health

    Författare :Frida Persson; Unni Stenmark; [2022]
    Nyckelord :omvårdnad; utfodring; sjukdom; skötsel; sällskaplighet; beteende; naturliga behov; välfärd;

    Sammanfattning : Det blir allt vanligare i Sverige och resten av världen att kaniner hålls som sällskapsdjur. Bristande kunskap om kaninens naturliga behov, beteende, omvårdnad och utfodring är trots detta inte ovanligt. LÄS MER