Essays about: "Radial bearings"

Showing result 1 - 5 of 6 essays containing the words Radial bearings.

  1. 1. Multibody modelling of the vibrations in an aircraft engine

    University essay from KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Author : Charly Mollet; [2022]
    Keywords : Vibrations; Multibody Modelling; Rolling Bearings; Rotor Dynamics; Reduction Processes; Vibrationer; multikroppsmodellering; rullingslager; rotordynamik; reducktionsprocesser;

    Abstract : During the assembly of aircraft engines, some clearance is left in the rolling bearings mainly to reduce friction. However this clearance might allow the rolling element to vibrate during flight. Indeed, unwanted vibrations called non-synchronous vibrations (NSV) appear on the data recorded by the sensors on some development engines. READ MORE

  3. 2. Active Control of High­-Speed Flexible Rotors on Controllable Tilting­-Pad Journal Bearings : Theory and Experiment

    University essay from Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Author : Paul-Henrik Bull; [2021]
    Keywords : ATPJB; Fluid-Film Lubrication; Model based control; Vibration Control;

    Abstract : A common choice of bearing for industrial applications such as turbomachinery and rotating compressors is the Tilting-Pad Journal Bearing (TPJB) due to its excellent stability properties. TPJB's are however limited by the reduction of damping in the fluid film at high velocities. READ MORE

  4. 3. Hertz contact influence on acoustic emission signals originating in radial bearings : Test rig construction and experimental evaluation

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Joel Klippås; [2018]
    Keywords : Hertz contact; Acoustic emission; Radial bearings;

    Abstract : During the project a test rig was constructed in which experiments were performed on radial bearings to evaluate the acoustic emission amplitude and RMS value of the signal. The acoustic emission amplitude depends on the Hertz contact time, i.e. the time it takes for the Hertz contact to roll over its own contact length. READ MORE

  5. 4. Validation and modeling of power losses of NJ406 cylindrical roller bearings

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : MINGHUI TU; [2016]
    Keywords : Roller bearings; bearing friction; bearing modeling.; Rullager; lagerfriktion; lagermodellering.;

    Abstract : I de flesta maskiner används lager för att ta upp krafter från roterande komponenter. I en växellåda används lager för att ge axlarna möjlighet att rotera fritt och att begränsa deras rörlighet i axiell och radiell led. READ MORE

  6. 5. High speed flywheel design : Using advanced composite materials

    University essay from Elektricitetslära

    Author : Tobias Kamf; [2012]
    Keywords : Flywheel; high speed; composite theory; composite materials; carbon fibre; glass fibre; simulation; energy storage; Matlab; SolidWorks; stress; permanent magnets; magnetic bearings.;

    Abstract : This thesis is a part of a larger project that focuses on the development of a highspeed, high energy flywheel using both high-tech composites and levitating magneticbearings alongside a custom made, permanent magnetized generator built into theflywheel itself. The goal of the project is then to integrate this flywheel into anelectrical vehicle. READ MORE