Sökning: "load shaker"

Hittade 4 uppsatser innehållade orden load shaker.

  1. 1. Investigation of a New Test Method to Perform a Vibration Test on Alternators

    Master-uppsats, KTH/MWL Marcus Wallenberg Laboratoriet

    Författare :Henrik Koponen; [2017]
    Nyckelord :;

    Sammanfattning : This master thesis work was performed in the Scania RECT group. The purpose of this study was to investigate a new test method and to examine if it was possible to perform a vibration test on two alternators at the same time where one would act as a motor and the other as a conventional alternator. LÄS MER

  3. 2. Pilot Testing of a Hydraulic Bridge Exciter

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Richard Borg; Olivier Dymén; [2015]
    Nyckelord :Hydraulic bridge exciter; controlled excitation; modal testing; experimental modal analysis; railway bridges; measurements; load shaker; FEM; FE-modelling; script; Hydraulisk broexciterare; kontrollerad excitering; modala tester; experimentell modal analys; järnvägsbroar; mätningar; lastexciterare; FEM; FE-modellering; script;

    Sammanfattning : In the design of a railway bridge that is meant for train speeds larger than 200 km/h, the Swedish Traffic Administration requires a dynamic analysis in addition to the conventional static design. The models used for static design may not always be suitable for dynamic analysis, which could lead to inaccurate estimations of the dynamic response. LÄS MER

  4. 3. Metodik för utmattningsberäkning av svets i vibrationsmiljö

    Master-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Elias Richloow; [2012]
    Nyckelord :;

    Sammanfattning : In this work, a method was developed and evaluated for calculating the life of welds under the influence of fatigue loads from a vibration environment. Typically, a shaker table is used for testing a component against vibration loads. The shaker table creates a vibration environment that is defined in the frequency domain by a power spectrum. LÄS MER

  5. 4. Vibration Analyses of a Wooden Floor-Wall Structure- Experimental and Finite Element Studies

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Byggnadsmekanik

    Författare :Joel Ejenstam; Ola Flodén; [2011]
    Nyckelord :Technology and Engineering;

    Sammanfattning : Changes in the Swedish construction code introduced in 1994 enabled the construction of wooden multistorey buildings. This resulted in an increased need for knowledge about wooden structures in the building industry. The main issue in wooden framed buildings is disturbing vibrations and noise which propagate throughout the construction. LÄS MER