Sökning: "Torsional Mode Shapes"

Hittade 4 uppsatser innehållade orden Torsional Mode Shapes.

  1. 1. Investigation of torsion modes in overhead traveling cranes: : Reviewing the ISO 22980 standard

    Master-uppsats, Linnéuniversitetet/Institutionen för maskinteknik (MT)

    Författare :Simon Jens; [2023]
    Nyckelord :Overhead traveling crane; Finite element method; Frequency and experimental vibration analysis; Travers; finita elementmetod; egenfrekvensanalys; experimentell vibrationsanalys;

    Sammanfattning : Overhead cranes and rail mountings in the wall are subjected to vibrations whenlifting equipment. The purpose of this thesis is to review if the minimum frequencyvalue for cranes, according to the ISO 22986:2007 standard is conservative whendesigning overhead traveling cranes. LÄS MER

  3. 2. Finite element modelling of LV transformer winding to simulate dynamic events occurring under short circuit : In Ansys Mechanical

    Master-uppsats, Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Författare :Madhu Venkata Sri Prudhvi Bikkina; [2020]
    Nyckelord :Ansys Mechanical; LV winding; Power Transformer; Short-circuit; Spiraling; Torsional Mode Shapes;

    Sammanfattning : The ability to withstand a short circuit is the most essential feature of a power transformer. The most important reason to design short-circuits proof transformers is to ensure the reliability of the power grid (avoiding black outs etc.) and safety (fire and explosion in case of failure). LÄS MER

  4. 3. Seismic Analysis of Norra Tornen : A Comparison Based on the Requirements in Eurocode 8

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Andreas Barbaranelli; Andreas Wallin; [2019]
    Nyckelord :Earthquake design; High-Rise buildings; Tall buildings; Seismic Performance; Earthquake Engineering; Modal analysis; FE-analysis; Eurocode 8; Geotechnical engineering; Design Concepts; Foundation;

    Sammanfattning : In Sweden, buildings are not designed to withstand earthquakes due to the rarity of an earthquake event and its consequential damage. However, the aim of this thesis was to study the seismic performance of some of the highest buildings in Stockholm, called Innovationen and Helix. LÄS MER

  5. 4. Modal analysis of pedestrian-induced torsional vibrations based on validated FE models

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Simon Chamoun; Marwan Trabulsi; [2017]
    Nyckelord :Modal analysis; validated FE models; pedestrian-induced vibrations;

    Sammanfattning : Finite element (FE) models serve as the base of many different types of analysis as e.g. dynamic analysis. Hence, obtaining FE models that represent the actual behaviour of real structures with great accuracy is of great importance. LÄS MER