Sökning: "loads"

Visar resultat 11 - 15 av 984 avhandlingar innehållade ordet loads.

  1. 11. Nutrient loads to the Baltic Sea

    Författare :Per Stålnacke; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

    Sammanfattning : Nutrient enrichment is generally regarded as the greatest threat to the ecosystems of the Baltic Sea. This thesis demonstrates that the loads of nitrogen and phosphorus in the rivers in the Baltic Sea drainage basin are larger than previously assumed and by far exceed the size of the loads that reach the sea by way of other pathways, i.e. LÄS MER

  3. 12. Rainflow Analysis of Switching Markov Loads

    Författare :Pär Johannesson; Matematisk statistik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; actuarial mathematics; programming; operations research; Statistics; rainflow matrix; fatigue; vehicle load; hidden Markov model; random load; Markov model; Switching process; Statistik; operationsanalys; programmering; aktuariematematik;

    Sammanfattning : Rainflow cycles are often used in fatigue analysis of materials for describing the variability of applied loads. Therefore, an important characteristic of a random load process is the intensity of rainflow cycles, also called the expected rainflow matrix (RFM), which can be used for evaluation of the fatigue life. LÄS MER

  4. 13. Statistical modelling of lateral vehicle loads

    Författare :Magnus Karlsson; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  5. 14. On the dynamics of footbridges : A theoretical approach and a comparison between running and walking loads

    Författare :Daniel Colmenares; Raid Karoumi; Andreas Andersson; Mahir Ülker Kaustell; Pedro Museros Romero; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; footbridges; dynamics; human induced loads; human structure interaction; harmonic load; continuous beam; gångbroar; dynamik; fotgängarlast; samverkan mellan fotgängare och bro; harmonisk last; kontinuerlig balk.; Structural Engineering and Bridges; Bro- och stålbyggnad;

    Sammanfattning : The dynamic behaviour of lightweight footbridges is often susceptible to HumanInduced Loads (HILs). Generally HILs are taken into account as moving harmonicfunctions in which the loading frequency represents the step frequency of the pedestrians. LÄS MER

  7. 15. Mathematical Modeling of the Muscle Effects on the Human Body Responses under Transient Loads - Example of the Head-Neck Complex

    Författare :Adam Wittek; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cervical spine; transient loads; muscle effects; Hill-type muscle models; finite element analysis; impact biomechanics; mathematical modeling;

    Sammanfattning : The goal of this study was to develop and apply a method that overcomes limitations of the currently available solutions for finite-element modeling of skeletal muscles and their effects on dynamic responses of the human body under transient loads. One of such limitations is that finite element codes commercially available in the field impact biomechanics do not contain any specific procedures for simulation of skeletal muscles. LÄS MER