Search for dissertations about: "vibration standards"

Showing result 1 - 5 of 7 swedish dissertations containing the words vibration standards.

  2. 1. Wind-induced vibrations in tall timber buildings : Design standards, experimental and numerical modal analyses

    Author : Pierre Landel; Andreas Linderholt; Marie Johansson; Sigurdur Ormarsson; Petter Juell Nåvik; Linnéuniversitetet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Tall Timber Building; Wind-Induced vibration; Along-Wind Acceleration; Modal Analysis; Forced Vibration Test; Finite Element Model Reduction; Truss; Semi-Rigid Connection; Bâtiment en Bois de Grande Hauteur; Vibration Induite par le Vent; Accélération Parallèle au Vent; Analyse Modale; Test de Vibration Forcée; Réduction de Modèle aux Eléments finis; Poteau Treillis; Connexion Semi-Rigide; Hög Trähus; Vindinducerad Vibration; Acceleration Längs med Vinden; Modalanalys; Forcerat Vibrationstest; Finita Element Modellreduktion; Fackverk; Halvstyva Förband; Maskinteknik; Mechanical Engineering; Byggteknik; Civil engineering;

    Abstract : Climate change and densification of cities are two major global challenges. Inthe building and construction industry, there are great expectations that tall timberbuildings will constitute one of the most sustainable solutions. First, verticalurban growth is energy and resource-efficient. READ MORE

  4. 2. Psychological responses to noise and vibration

    Author : Jessica Körning-Ljungberg; Greg Neely; Ronnie Lundström; Kerstin Persson Waye; Umeå universitet; []
    Keywords : Psychology; Cognitive; Cortisol; Noise; Vibration; Occupational; Vehicle; Weinstein; Occupational; Vehicle; Weinstein; Weinstein; Psykologi; Psychology; psykologi;

    Abstract : Vehicle drivers are a group of workers that are exposed to noise and whole-body vibration (WBV) several hours a day. Some drivers may also be exposed to high mental loads – monitoring and manipulating physical controls while engaging problem solving activities often with strong short-term memory and spatial manipulation components. READ MORE

  5. 3. Damage Tolerance of Impacted Composite Sandwich Structures

    Author : Moeen ud din Saeed Rajput; Malin Åkermo; Stefan Hallström; Magnus Burman; Christian Berggreen; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; composite sandwich; cellular; polymer; material characterization; modulus; non-crimp fabric; low velocity impact; vibration; uncertainty analysis; drop-weight impact; fractography; barely visible impact damage; X-ray microtomography; compression-after-impact; bending-after-impact; high speed image processing; damage resistance; damage tolerance; Aerospace Engineering; Flyg- och rymdteknik;

    Abstract : This thesis deals with damage tolerance of impacted sandwich structures for load bearing applications. Composite sandwich structures find wide application as lightweight solutions in aerospace components, since weight reduction and less fuel emissions are primary concerns for aircraft manufactures. READ MORE

  6. 4. Difficulties to Read and Write Under Lateral Vibration Exposure : Contextual Studies Of Train Passengers Ride Comfort

    Author : Jerker Sundström; Shafiquzzaman Khan; Neil J. Mansfield; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lateral vibrations; passenger activities; reading; writing; sitting posture; frequency weighting; rated difficulty; field study; laboratory study; transient vibrations; stationary vibrations.; Vehicle engineering; Farkostteknik;

    Abstract : Many people use the train both as a daily means of transport as well as a working place to carry out activities such as reading or writing. There are, however, several important factors in this environment that will hamper good performance of such activities. READ MORE

  7. 5. Absorption of vibration energy in the human hand and arm

    Author : Lage Burström; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk akustik; Engineering Acoustics;

    Abstract : The risk assessment of hand-arm transmitted vibration is today based on measurements of the magnitude, frequency spectra and duration of the vibration stimuli. It is, however, reasonable to assume that the detrimental effects might depend on the vibration energy absorbed by the hand and arm. READ MORE