Sökning: "stick-slip"

Hittade 3 uppsatser innehållade ordet stick-slip.

  1. 1. Bronze-Steel Friction Characteristics under the Lubrication of Modified Water/Glycerol Mixtures

    Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Karim Hamouda; [2017]
    Nyckelord :Glycerol; glycerol additives; stick-slip; shudder; friction modifiers;

    Sammanfattning : Increasing environmental awareness has driven a lot of research to look into various environmentally friendly lubricants which can replace more conventional mineral oil based lubricants. This is true in particular for marine and hydropower applications where the risk of lubricant leakage can be damaging to the local environment. LÄS MER

  3. 2. Screaming screw tightenings

    Kandidat-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Jacob Andersson; Fredrik Danielsson; Wilhelm Löwen; [2017]
    Nyckelord :scream; screw joints; stick-slip; skrik; skruvförband; stick-slip;

    Sammanfattning : This paper is a bachelor thesis in machine design where screaming screw tightenings are discussed. The research was initiated with a preliminary study in screw mechanics and the tightening process, as well as the stick-slip phenomenon. LÄS MER

  4. 3. An investigation of friction graphs ranking ability regarding the galling phenomenon in dry SOFS contact : (Adhesive material transfere and friction)

    Uppsats för yrkesexamina på avancerad nivå, Karlstads universitet/Fakulteten för teknik- och naturvetenskap

    Författare :Harald Wallin; [2008]
    Nyckelord :galling; friction; adhesive contact; mild adhesive; severe adhesive; abrasive; flattening; SOFS; TNO; slider on flat surface; tribology; dry; lubricated; frictional heating; acceleration; plastic zone; contact pressure; pressure; phase transformation; morphology; seizure; scoring; scuffing; cohesive forces; classification; characteristic patterns; lump; sheet damage; på kletning; friction; kontakt tryck; värme; plogning;

    Sammanfattning : The main purpose of this project is to investigate different tool steels in terms of their ability to withstand material transfer buildup, so-called galling, occurring in SMF (sheet metal forming) operations. The ability to withstand galling is vital to optimize cost-effectiveness and increase the work tool’s effective operational time. LÄS MER