Sökning: "wall vibrations"

Visar resultat 1 - 5 av 16 avhandlingar innehållade orden wall vibrations.

  1. 1. Dynamics Study of an Automobile Exhaust System

    Detta är en avhandling från Karlskrona : Blekinge Institute of Technology

    Författare :Johan Wall; ; [2003]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Exhaust system; Experimental investigations; Finite element method; Flexible joint; Modal analysis; Model updating; Simplified modelling; Structural dynamics;

    Sammanfattning : Low vibration levels are a critical objective in automobile exhaust system design. It is therefore important for design engineers to be able to predict, describe and assess the dynamics of various system design proposals during product development. LÄS MER

  2. 2. Strategies for Reducing Vibrations during Milling of Thin-walled Components

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Bertil Wanner; Cornel Mihai Nicolescu; Thomas Björk; [2012]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Milling; vibrations; chatter; stability; prediction; thin-wall; Inconel 718;

    Sammanfattning : Factors such as environmental requirements and fuel efficiency have pushed aerospace industry to develop reduced-weight engine designs and thereby light-weight and thin-walled components. As component wall thickness gets thinner and the mechanical structures weaker, the structure becomes more sensitive for vibrations during milling operations. LÄS MER

  3. 3. Strategies for Reducing Vibrations during Milling of Thin-walled Components

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Bertil Wanner; Mihai Nicolescu; Thomas Björk; [2012]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Milling; vibrations; chatter; stability; prediction; thin-wall; Inconel 718.; Manufacturing and materials engineering; Produktions- och materialteknik;

    Sammanfattning : Factors such as environmental requirements and fuel efficiency have pushed aerospace industry to develop reduced-weight engine designs and thereby light-weight and thin-walled components. As component wall thickness gets thinner and the mechanical structures weaker, the structure becomes more sensitive for vibrations during milling operations. LÄS MER

  4. 4. Sound generation in metal flue organ pipes: On the influence of asymmetric flue exit geometry and vibrations of the upper labium with particular emphasis on the early response

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Matthias Scholz; [2006]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; jet contraction; wall vibrations; CFD; jet velocity profile; tap tone; asymmetry of flue exits; operational deflection shapes; Coanda effect; yielding upper labium; modal analysis; bottom clamped cylinder; vibration measurements; metal flue organ pipes; dipole; initial jet formation;

    Sammanfattning : Sound generation in flue organ pipes is caused by the non-linear interaction between an instable jet and a tube resonator. Our understanding of this very complex physical process is still incomplete, and there is not yet a model that can explain all details of the richness in pipe sound which can be achieved by a trained organ pipe voicer. LÄS MER

  5. 5. Submerged Transmission in Wave Energy Converters Full Scale In-Situ Experimental Measurements

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Erland Strömstedt; Mats Leijon; Hans Bernhoff; Jan-Olov Aidanpää; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wave energy converter; direct drive; submerged transmission; piston rod; seal housing; sealing system; laser triangulation sensor; offshore measurements; relative displacement; vibrations; tilt angle; tilting; wear estimation.; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Sammanfattning : Different wave power technologies are in development around the world in different stages of prototype testing. So far only a few devices have been deployed offshore at full scale for extended periods of time. Little data is published about how these different devices perform. LÄS MER