Sökning: "Frequency and experimental vibration analysis"

Visar resultat 1 - 5 av 23 uppsatser innehållade orden Frequency and experimental vibration analysis.

  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. 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

  4. 3. Wood and moisture-induced strains in a large deformation setting in 3D

    Master-uppsats, Linnéuniversitetet/Institutionen för byggteknik (BY)

    Författare :Fredrik Ström; Anwar Obeido; [2022]
    Nyckelord :Total Lagrangian; Finite element method; Large deformation theory; Deformation gradient decomposition; Moisture-induced strains; Hygroscopic; Orthotropic.;

    Sammanfattning : Many studies have previously been done on moisture-induced strains in wood. An in- finitesimal/engineering strain model has been used for most of these studies, which is often an accurate approximation for small rotations. However, if large deformations oc- cur, then fictive strains are obtained resulting from the simplified engineering strain. LÄS MER

  5. 4. Numerical and Experimental Modal Analysis of CNC Machine

    Master-uppsats, Blekinge Tekniska Högskola

    Författare :Pacifique Uwajambo; Nisha Thakur; [2021]
    Nyckelord :;

    Sammanfattning : Numerical and Experimental Modal Analysis of RAW CNC milling machine was performed in this project. The RAW CNC machine's lightweight, easy assembling, and operation features make it a good choice for hobbyists and professionals. LÄS MER

  7. 5. Evaluating the performance of a vibration energy harvester under complex excitation

    Master-uppsats, Mittuniversitetet/Institutionen för elektronikkonstruktion

    Författare :Zhiqiang Chen; [2020]
    Nyckelord :Vibration energy harvesting; harvester; closed-loop control; resonant frequency; prediction;

    Sammanfattning : In recent years, vibration energy harvesting has become a research hotspot in the field of energy harvesting. Energy harvester output power is the most important parameter in a vibration energy harvesting system. Assessing the harvester output power in different vibration environments is an important study issue to study. LÄS MER