Search for dissertations about: "gears"

Showing result 1 - 5 of 60 swedish dissertations containing the word gears.

  1. 1. Gear tribology : friction and surface topography

    University dissertation from Göteborg : Chalmers university of technology

    Author : Li Xiao; Högskolan i Halmstad.; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY; TEKNIKVETENSKAP; Friction; Surface topography; Toughness; Lay; Gears; Power transmission; surface topography; lay; toughness; power transmission; wfficiency; gears; friction;

    Abstract : The quest for energy efficiency leads to the development of highly efficient power transmissions for vehicles. Gears are some of the most rugged and durable torque transmitters among machine elements. Friction between sliding surfaces at gear teeth is one major source of power loss. READ MORE

  2. 2. On the running-in of gears

    University dissertation from Stockholm : KTH

    Author : Sören Sjöberg; KTH.; [2010]
    Keywords : gears; gear manufacturing; running-in; surface topography; contact area ratio; manganese phosphate; TECHNOLOGY Other technology Mechanical engineering; TEKNIKVETENSKAP Övriga teknikvetenskaper Maskinteknik;

    Abstract : The general trend in gear industry, today, is an increased focus on gear transmission efficiency. Gear transmission efficiency losses arise from loaded and unloaded gear contacts, seals, lubricant and bearings. One way of minimising the losses is to lower the lubricant viscosity. This will reduce the speed dependent losses. READ MORE

  3. 3. Running-in of gears - surface and efficiency transformation

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Mario Sosa; KTH.; [2017]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; running-in; surface transformation; efficiency; gears; ground; superfinished; Machine Design; Maskinkonstruktion;

    Abstract : With ever shorter development times and market demands on overall system performance such as efficiency, reliability and low maintenance, accurate predictive tools are necessary and gear drives prove to be no exception. All these characteristics have an impact on a process which has remained a riddle: running-in. READ MORE

  4. 4. Simulation of contact, friction and wear in gears : a finite element approach

    University dissertation from Linköping : Linköpings universitet

    Author : Olle Lundvall; Linköpings universitet.; Linköpings universitet.; [2000]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gears; Gear noise; Contact mechanics; Simulation; Friction; Wear; Transmission error;

    Abstract : In this thesis, resent methods in computational contact mechanics is brought into the process of gear design. The finite element method is used to model two elastic bodies in contact. By defining a contact interface between these two bodies, constitutive laws, regarding normal contact, friction and wear, are included. READ MORE

  5. 5. Effect of rough surface anisotropy on friction in gears

    University dissertation from Göteborg : Chalmers tekniska högsk

    Author : Li Xiao; [2002]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Friction; Surface topography; Roughness; Lay; Gears; Efficiency; Power transmission; TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : .... READ MORE