Sökning: "Vibration reduction"

Visar resultat 16 - 20 av 52 uppsatser innehållade orden Vibration reduction.

  1. 16. Noise Analysis of Computer Chassis and Secondary Sound Source Noise Reduction

    Master-uppsats, Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Författare :Haosheng Zheng; Kaichun Zhang; [2019]
    Nyckelord :Computer; Acoustic FEM; LMS Virtual. Lab; Acoustic-Vibration Coupling;

    Sammanfattning : This article focuses on computer noise analysis and noise reduction processing. With the popularity of computers, people are increasingly demanding the comfort of using computers. Solving the noise problem of the computer case can make the working environment more comfortable. LÄS MER

  3. 17. Semi-active suspension seats in High speed crafts

    Master-uppsats, KTH/Marina system

    Författare :Victor Ekström; [2019]
    Nyckelord :;

    Sammanfattning : The working environment of a high-speed-craft (HSC) can be uncomfortable and hazardous for the crew and passengers on board. This due to the repeated exposure to high levels of vibration and shocks, that can lead to reduced performance and severe injuries to the back and neck. LÄS MER

  4. 18. Railway bridges with floating slab track systems : Numerical modelling of rail stresses - Dependence on properties of floating slab mats

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Byggkonstruktion och -produktion

    Författare :Daniel Kostet; [2018]
    Nyckelord :ballasted track; bridge; elastic mat; expansion; finite element method FEM ; finite element analysis FEA ; floating slab mat; interaction; International union of railways UIC ; non-ballasted track; SOFiSTiK; ballasterat spår; ballastfritt spår; bro; dilatationsfogar; finita elementmetoden FEM ; finit elementanalys FEA ; fixerat spår; interaktion; Internationella järnvägsunionen UIC ; SOFiSTiK; vibrationer; vibrationsdämpande matta;

    Sammanfattning : The increased use of continuously welded rails in the railway systems makes it necessary to increase the control of the rail stresses to avoid instability and damages of the rails. Large stresses are especially prone to appear at discontinuities in the railway systems, such as bridges, due to the interaction between the track and the bridge. LÄS MER

  5. 19. Aerodynamic Design of Centrifugal Compressor for Heavy Duty Truck Applications

    Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

    Författare :Amanda Karlsson; [2018]
    Nyckelord :Centrifugal Compressor; Turbo; Turbocharger; Emissions; CO2; CFD; Volvo; Compressor; Impeller; Diffuser; Design; Aerodynamics; Aerodynamic; Truck; Transportation; Heavy Duty; Vehicle; Technology and Engineering;

    Sammanfattning : The transport sector is one of many markets facing new challenges in the pursuit of reduced greenhouse gas emissions. The people at Volvo Powertrain in Malmö are continuously working to develop new and improved techniques that are able to live up to the ever-increasing legislations. LÄS MER

  7. 20. Vibration Reduction in a Gantry Robot

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för reglerteknik

    Författare :Marcus Peterson; [2018]
    Nyckelord :Technology and Engineering;

    Sammanfattning : This report considers the problems of using a model-based approach to develop an estimation for a non-linear system using a linear model. Different estimation approaches were researched and evaluated using an ideal system, thus finding the suitable method for this thesis. LÄS MER