Sökning: "modal"

Visar resultat 16 - 20 av 402 avhandlingar innehållade ordet modal.

  1. 16. Några resultat i modal logik

    Författare :Sören Halldén; Stockholms högskola; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  3. 17. Dynamic properties of two pedestrian timber bridges : Experimental and numerical analysis at several stages of construction

    Författare :Jens Bergenudd; Jean-Marc Battini; Roberto Crocetti; Patricia Hamm; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Dynamic analysis; Modal analysis; Pedestrian bridge; Timber; Railings; Asphalt; Slip modulus; Finite element modelling; Dynamisk analys; Modal analys; Gång- och cykelbro; Trä; Räcken; Asfalt; Förskjutningsmodul; Finita element modellering.; Bro- och stålbyggnad; Structural Engineering and Bridges;

    Sammanfattning : Pedestrian bridges can beneficially be made from timber in order for our society to reach a sustainable future. This positive development is partly made possible due to advances in engineered wood products (e.g. glued laminated timber) and the possibilities for pre-fabrication of structural parts. LÄS MER

  4. 18. Development of Accurate Reduced Order Models in a Simulation Tool for Turbomachinery Aeromechanical Phenomena

    Författare :Mauricio Gutierrez Salas; Björn Laumert; Paul Petrie-Repar; Damian Vogt; Carlos Martel; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; flutter; forced response; high cycle fatigue; reduced order models; ROM; craig-bampton; mistuning; tuned; mistuned; cyclic; noncyclic; craig-chang; free-interface. fixed-interface; subset nominal mode; SNM; CBMS; CCMS; CCC; CBC; FEM; CMS; modal; eigen; modeshapes; aeroelasticity; aeromechanical; tool; turbomachinery; turbine; compressor; AROMA; Energy Technology; Energiteknik;

    Sammanfattning : Modern gas turbines are still vulnerable to vibrations when operated at certain speeds. This unstable environment can lead to high cycle fatigue (HCF) and damage several of the components inside the turbine. LÄS MER

  5. 19. Aircraft composites and aeroelastic tailoring

    Författare :Jakob Kuttenkeuler; KTH; []
    Nyckelord :polymer composites; testing; resin; transfer molding; RTM; process parameters; mechanical properties; aircraft; impact damage; BVID; modal; inverse method; uncertainties; aeroelasticity; optimization; wind tunnel; TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : This thesis treats various aspects of structural polymercomposites in aircraft applications. The mechanical performanceand quality of resin transfer molded (RTM) carbon fiberreinforced epoxy composites is studied. LÄS MER

  7. 20. Lärares dilemman

    Författare :Helge Räihä; Per Ledin; Kajsa Falkner; Jan Anward; Örebro universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; teacher; dilemma; media; trust; derivation; rationality; connective; logical; predicative; modal; Swedish language; Svenska språket; Svenska språket; Swedish Language;

    Sammanfattning : The topic of the present dissertation is teachers’ everyday dilemmas and the use of language to deal with these dilemmas. The concept of dilemma is compared to the concept of risk and the concept of paradox. The theoretical background consists of sociological systems theory and linguistic pragmatic theory. LÄS MER