Search for dissertations about: "rolling friction"

Showing result 6 - 10 of 69 swedish dissertations containing the words rolling friction.

  2. 6. A study on the possibilities of improving the environment by the use of less detrimental lubricants in cold rolling

    Author : Mohammed Tahir; KTH; []
    Keywords : Environmental lubricants; Lubrication; Cold rolling; Friction; Forward slip; Surface roughness; Surface temperature; Aluminium strip;

    Abstract : .... READ MORE

  4. 7. On interface modeling  with emphasis on friction

    Author : Anders Söderberg; Sören Andersson; Lars-Erik Stacke; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; interface model; contact; friction; simulation; system behaviour; surface roughness; elastic foundation; Other engineering mechanics; Övrig teknisk mekanik;

    Abstract : The general trend toward increased use of computer models and simulations during product development has led to a need for accurate and reliable product models. The function of many products relies on contact interfaces between interacting components. READ MORE

  5. 8. Roller skis' rolling resistance and grip characteristics : influences on physiological and performance measures in cross-country skiers

    Author : Mats Ainegren; Peter Carlsson; Marko Laaksonen; Mittuniversitetet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Adjustable grip; blood lactate; centre of pressure; cycle length; cycle rate; economy; efficiency; friction coefficient; heart rate; normal force; OBLA; oxygen uptake; power; ratcheted wheel; ratings of perceived exertion; roller skis; rolling resistance; tangential force; time to exhaustion;

    Abstract : The aim of this thesis was to investigate roller ski characteristics; classical and freestyle roller skis’ rolling resistance coefficients (μR) and classical style roller skis’ static friction coefficients (μS), and to study the influence of different μR and μS on cross-country skiers’ performance and both physiological and biomechanical indices. The aim was also to study differences in skiing economy and efficiency between recreational skiers, female and male junior and senior elite cross-country skiers. READ MORE

  6. 9. Optical Measurements of Rolling Friction Coefficients

    Author : Yiling Li; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Experimental Mechanics; Experimentell mekanik;

    Abstract : This thesis presents an optical method to measure the rolling friction coefficientsfor balls rolling freely on a cylindrical surface. Two different models of a ball rollingfreely on a cylindrical surface are established, one is an analytical model and the otheris a numerical model derived from Lagrange equation. READ MORE

  7. 10. Low-friction and wear-resistant carbon nitride coatings for bearing components grown by magnetron sputtering

    Author : Konstantinos Bakoglidis; Grzegorz Greczynski; Lars Hultman; Susann Schmidt; Witold Gulbinski; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Carbon nitride; magnetron sputtering; physical vapor deposition; coatings; bearings; rolling contact fatigue; adhesion; friction; wear; transmission electron microscopy; scanning electron microscopy; x-ray photoelectron spectroscopy; coatings tribology; nanotribology;

    Abstract : The scope of this thesis is the investigation of magnetron sputtered carbon nitride coatings suitable for roller bearing components. The research field of tribology of bearings focuses on minimizing friction between components by improving the lubricants. READ MORE