Sökning: "thin oil film."

Visar resultat 1 - 5 av 7 uppsatser innehållade orden thin oil film..

  1. 1. Development of Test Rig and Experimental Evaluation of Hydrostatic Bearings for an Axial Flux Machine

    Master-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Amir Avdic; Kishore-Babu Vejendla; [2022]
    Nyckelord :viscous losses; hydrostatic bearing; hydrodynamics; thin oil film.; Viskösa förluster; generator; hydrostatiska lager; hydrodynamik; tunn oljefilm.;

    Sammanfattning : A novel electric machine design, similar to an axial flux machine, incorporates hydrostatic bearings to increase efficiency and stability of said machine. In this thesis, the feasibility of a hydrostatic solution is explored and evaluated by development, manufacturing, and assembly of a test rig, as well as running experimental tests with it. LÄS MER

  3. 2. An evaluation of materials and processes suitable for manufacturing micro HASEL-actuators

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Mikrosystemteknik

    Författare :Anna Lindgren; [2021]
    Nyckelord :HASEL-actuator; paraffin blend;

    Sammanfattning : HASEL-actuators use dielectric liquids and compliant shells as their media. This type of actuatorwould suit the actuators used as fins for soft milli robots (SOMIRO). These robots are going tobe used in aquaponic crops for studying its impact on the environment to help the farmersimprove their crops. LÄS MER

  4. 3. Dynamic Torque Modeling of a Wet Lamella Clutch Pack

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Industriell elektroteknik och automation

    Författare :Jacob Wallersköld; Johan Appelros; [2021]
    Nyckelord :wet lamella clutch; friction modeling; torque modeling; torque accuracy; force measurements; system identification; grey-box modeling; Technology and Engineering;

    Sammanfattning : Wet lamella clutches are used in the automotive industry to enable all-wheel drive and thereby increase acceleration, handling and safety of cars. The clutches work by transmitting torque from an incoming- to an outgoing shaft through a series of lamella - steel-disc friction surfaces (lamella pack), lubricated by an oil. LÄS MER

  5. 4. Model of Thermal EHL Based on Navier-Stokes Equations : Effects of Asperities and Extreme Loads

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

    Författare :Marko Tošić; [2019]
    Nyckelord :;

    Sammanfattning : A common approach in numerical studies of elastohydrodynamic lubrication (EHL) is based on solving the Reynolds equation that governs pressure distribution in thin lubricant films. The Reynolds equation is derived from the Navier-Stokes equations by taking assumptions that are considered valid when the thickness of the lubricant film is much smaller than its length. LÄS MER

  7. 5. Tribological Performance of Hygrothermally Aged UHMWPE Hybrid Composites

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

    Författare :Luca Palmeira Belotti; [2018]
    Nyckelord :UHMWPE; aging; polymers; tribology;

    Sammanfattning : Stricter environmental regulations and trend of decreasing cost and increasing operational efficiency are the driving forces for the improvement of the tribological performance in many different industries. For example, in the case of hydropower plants, there has been increasing research carried out to achieve oil-free stations, which would substitute the oil-based lubricants with environmentally accepted lubricants or water. LÄS MER