Sökning: "Experimental modal testing"

Visar resultat 1 - 5 av 16 uppsatser innehållade orden Experimental modal testing.

  1. 1. Utilisation of hardwood in cross-laminated timber - A numerical study on vibrations in floors

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

    Författare :Johannes Jonasson; Olle Karlsson; [2022]
    Nyckelord :hardwood; birch; beech; clt; cross-laminated timber; vibrations; floors; footfall; accelerations; Technology and Engineering;

    Sammanfattning : Cross-laminated timber (CLT) is an engineered wood product consisting of several layers of laminations bonded together with adhesives. In contrast to heavier construction materials, timber and other lightweight building materials are more prone to serviceability issues due to vibrations. LÄS MER

  3. 2. Dynamic Analysis of an Automotive Power Transfer unit : Towards prediction of TE and housing vibrations

    Master-uppsats, KTH/Maskinkonstruktion (Avd.)

    Författare :Nikhil Maharshi Kosaraju; [2019]
    Nyckelord :Power transfer unit PTU ; Multi-Body Simulation MBS ; Transmission Error; Gear NoiseVibration; Modal Analysis; Vinkelväxlen PTU ; Multi-Body Simulering MBS ; transmissionsfel TE ; Växelljud och vibrationer; Modal analys;

    Sammanfattning : This work describes the use of Multi-Body Simulation (MBS) to create a virtual prototype of a geared drive called Power transfer unit (PTU). PTU is a subsystem of the all-wheel drive driveline responsible for transfer of power between front and rear axles in an Automobile. LÄS MER

  4. 3. Numerical and experimental dynamic analyses of Hägernäs pedestrian bridge : Including seasonal effects

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :AIDA IBISEVIC; HASANHÜSEYIN UGUR; [2019]
    Nyckelord :Pedestrian Timber Arch Bridge; Seasonal Effect; Modal Analysis; Dynamic Analysis; Finite Element Method; Experiments vi;

    Sammanfattning : Wood as a construction material has in recent years increased, in particular concerningpedestrian bridges. By utilizing wood, the ecological footprint can be reduced,and the material can be designed to comply with the increasing aesthetic demandbridge designers are facing. LÄS MER

  5. 4. Modeling of a Gear Test Rig : An Investigation of Static Loads and Dynamic Excitation of Vibrations

    Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Albin Hugoh; [2019]
    Nyckelord :;

    Sammanfattning : Today the automotive industry is going through big changes and facing many new challenges due to the transformation to a sustainable transport solution in combination with tougher legal demands. Gears have been around for a long time and it is one of the most efficient ways of transferring rotary motion from one shaft to another. LÄS MER

  7. 5. Nonlinear Modelling and Simulation of Impact Events and Validation with Experimental Test

    Master-uppsats, KTH/Lättkonstruktioner

    Författare :András Péter Székely; Nicole Al Hanna; [2019]
    Nyckelord :;

    Sammanfattning : For rattle event prediction accurate models capable of estimating system response at impact are required. In this thesis, a finite element model is built to imitate a physical setup designed for testing rattle. First, a modal analysis is performed in ABAQUS/Standard to validate the CAE model. LÄS MER