Sökning: "stiffening"

Visar resultat 1 - 5 av 20 avhandlingar innehållade ordet stiffening.

  1. 1. Acoustical Characteristics of Aircraft Panels

    Detta är en avhandling från Stockholm : KTH

    Författare :Bilong Liu; KTH.; [2006]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Acoustics; sound transmission loss; stiffener; stiffening; aircraft panel; cylindrical shell; turbulent boundary layer; TBL; noise; sound radiation; TECHNOLOGY Engineering physics Acoustics; TEKNIKVETENSKAP Teknisk fysik Akustik;

    Sammanfattning : A deterministic approach based on a modal expansion and modal receptance method has been developed to evaluate the airborne sound insulation of aircraft panels with stringer and ring frame attachments. Furthermore, this method was extended to predict the noise radiation of stiffening panel subjected to TBL excitation. LÄS MER

  2. 2. Sound transmission through aircraft panels

    Detta är en avhandling från Stockholm : KTH

    Författare :Biong Liu; KTH.; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sound transmission loss; stiffener; stiffening; aircraft panel; cylindrical shell; TECHNOLOGY Engineering mechanics Vehicle engineering; TEKNIKVETENSKAP Teknisk mekanik Farkostteknik;

    Sammanfattning : .... LÄS MER

  3. 3. Effects of Steel Fibres on Cracking in Reinforced Concrete

    Detta är en avhandling från Chalmers University of Technology

    Författare :Anette Jansson; Chalmers tekniska högskola.; Chalmers University of Technology.; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Byggnadsteknik; Building engineering; Keywords: Self-compacting; fibre-reinforced; bond; pull-out test; uniaxial tension test; tension stiffening; characteristic crack width; Digital Image Correlation;

    Sammanfattning : ABSTRACT Although it is well known that fibre reinforcement acts as a crack arresting agent, there is still a need for deeper knowledge of the actual cracking behaviour, especially regarding cracks with widths smaller than 0.3mm. LÄS MER

  4. 4. Epidemiological, mechanistic and genetic aspects of vascular ageing and arterial stiffness in the population

    Detta är en avhandling från Lund University, Faculty of Medicine

    Författare :Mikael Gottsäter; Lunds universitet.; Lund University.; [2017]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Vascular ageing; Arterial stiffness;

    Sammanfattning : The core feature of vascular ageing is the age-associated stiffening of the large, elastic arteries, or arteriosclerosis. This results in a diminished volume-buffering function and is therefore central for the increase in systolic blood pressure and pulse pressure seen with advancing age. LÄS MER

  5. 5. Foam modeling including pore gas interaction for crashworthiness analysis

    Detta är en avhandling från Chalmers University of Technology

    Författare :Mats Landervik; Chalmers tekniska högskola.; Chalmers University of Technology.; [2006]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fastkroppsmekanik; Solid mechanics; Constitutive modeling; Theory of Porous Media; Hyperelasto-viscoplasticity; Foams; Staggered solution; Non-linear dynamics.;

    Sammanfattning : Foams are used in vehicles for three main functions: enhancing comfort, e.g. soft foams used in seats cushions, energy absorbtion, e.g. LÄS MER