Sökning: "spring design"

Visar resultat 1 - 5 av 70 avhandlingar innehållade orden spring design.

  1. 1. Composite Bridges : Innovative ways of achieving composite action

    Författare :Robert Hällmark; Peter Collin; Ian May; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Composite action; bridges; steel; concrete; shear connectors; prefabrication; coiled spring pins; shear studs; post-installation; design guidance; Structural Engineering; Konstruktionsteknik;

    Sammanfattning : The topic of this thesis is steel-concrete composite bridges and innovative ways of achieving composite action. The typical superstructure consists of three main components: the steel girders, the concrete deck slab and the shear connectors. LÄS MER

  3. 2. Torque and Angle Controlled Tightening of Bolted Joints

    Författare :Göran Toth; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; torque controlled tightening; deformation parameters; momentary elongation; deformation factor; torque; Bolted screwed joints; spring characteristic; Torx; torque and angle controlled tightening; hexalobular; final torque; snug torque; Taylor’s series expansions; preload; plastic deformation; permanent elongation; yield; friction diameter; plastic spring constant; clevis; turn-of-nut method; bearing surface pressure; twisting; Monte-Carlo simulations;

    Sammanfattning : Reduced weight and fuel consumption, improved reliability and engine performance are the main requirements in the automotive industry of today. These requirements demand robust and optimized bolted joints, where a high amount of preload obtained by effective utilisation of the bolt is essential. LÄS MER

  4. 3. Design of soundproof panels via metamaterial concept

    Författare :Zibo Liu; Leping Feng; Romain Rumpler; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The goal of the work is to find a way to improve the sound insulation properties of different types of panels in order to meet different requirements. Inspired by the nontrivial behavior of the locally resonant acoustic metamaterials, this concept is introduced into the design of structures in order to explore the potential ways to improve the sound insulation behavior in the relevant specific frequency regions. LÄS MER

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

    Författare :Pierre Landel; Andreas Linderholt; Marie Johansson; Sigurdur Ormarsson; Petter Juell Nåvik; Linnéuniversitetet; []
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  7. 5. On multi body systems simulation in product design

    Författare :Petri Makkonen; KTH; []
    Nyckelord :;

    Sammanfattning : The aim of this thesis is to provide a basis for efficientmodelling and software use in simulation driven productdevelopment. The capabilities of modern commercial computersoftware for design are analysed experimentally andqualitatively. LÄS MER