Sökning: "vibrationer och obehag"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden vibrationer och obehag.

  1. 1. Comfort of children in cycle carriers

    Master-uppsats, KTH/Väg- och spårfordon samt konceptuell fordonsdesign

    Författare :Yunqi Liu; [2022]
    Nyckelord :Bicycle carrier; Child comfort; Laboratory experiment; ISO 2631-1; Cykelsläp; Barns komfort; Laboratorieförsök; ISO 2631-1;

    Sammanfattning : Carriers attached as bicycle trailers that can transport small children are becoming increasingly popular in recent years. They replace cars as a convenient and sustainable way to travel for families in commuting and other everyday activities. LÄS MER

  3. 2. Test Equipment for Physical Testing of Vibration Isolator

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

    Författare :ADAM ALVETEG; MARKUS JOHANSSON; [2021]
    Nyckelord :Test rig; vibration isolator; hysteresis; Testrigg; vibrationsisolator; hysteres;

    Sammanfattning : Vibrations is a phenomenon that can cause problems to systems if not dealt with. In heavy duty trucks, vibrations are mainly caused by uneven roads and from the combustion engine. Vibrations can damage components, reduce their service life and cause discomfort for the driver. LÄS MER

  4. 3. 3D Printed Lattice Structure for Driveline Applications

    Master-uppsats, KTH/Materialvetenskap

    Författare :Boyu Xue; [2021]
    Nyckelord :Lattice structure; AM Additive Manufacturing ; topology optimization; lattice optimization; NVH noise; vibration and harshness ; mechanical performance; lightweight; driveline; natural frequency; Gitterstruktur; AM additiv tillverkning ; topologioptimering; optimering av gitter; NVH buller; vibrationer och obehag ; mekanisk prestanda; lättvikt; drivlina; egenfrekvens;

    Sammanfattning : Lattice structures have received a lot of attention as cellular materials in recent years because of their outstanding properties, such as high strength-to-weight ratio, heat transfer, energy absorption, and capability of improving noise, vibration and harshness (NVH) behavior. This type of structure received a boost from additive manufacturing (AM) technology, which can fabricate geometries in practically any shape. LÄS MER

  5. 4. Undersökning av konsolideringens inverkan på skjuvvågshastighet med SCPT i svensk finkornig jord : Med jämförelse mot empiriskt samband

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Geoteknologi

    Författare :Markus Lindström; Oldgren Martin; [2020]
    Nyckelord :Geoteknik; SCPT; vibrationer; konsolidering; svensk finkornig jord; skjuvvågshastighet;

    Sammanfattning : Att kunna utvärdera dynamiska parametrar i finkornig jord har blivit allt mer aktuellt i Sverige, inte minst på grund av de nya höghastighetsbanorna som ska byggas inom snar framtid. Tågens höga hastigheter kommer skapa dynamiska vågor som breder ut sig i den underliggande jorden. LÄS MER

  7. 5. Modelling cross-laminated timber floors in dynamic analysis - Eigenfrequency prediction

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

    Författare :Johannes Wetterholt; [2019]
    Nyckelord :finite element method; FEM; dynamic analysis; Eigenfrequency; CLT; cross-laminated timber; cross-laminated timber floors; wooden floors; Technology and Engineering;

    Sammanfattning : In the late 1990s cross-laminated timber (CLT) was developed. The development of CLT was a project aimed to produce a structural product that could compete with the concrete industry and contribute to a reduced effect on the environment, due to the low environmental impact of timber in relation to other building materials. LÄS MER