Essays about: "frequency response analysis"

Showing result 21 - 25 of 171 essays containing the words frequency response analysis.

  1. 21. Sensitivity analysis of a generic urban flow model : 2D modelling with empirical hyetographs and CDS rain

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Julia Granlund; [2022]
    Keywords : Input parameters; initial water content; antecedent moisture content; impervious surfaces; topography; empirical hyetographs; design storms;

    Abstract : Severe flooding events in recent years have underlined the importance of accurate hydrological modelling in urban areas. There are many important parameters relating to both the rainfall distribution and properties of the land on which the rain falls that controls the impacts of the rain event. READ MORE

  3. 22. Grid Scale Storage Placement In Power Systems

    University essay from Uppsala universitet/Institutionen för elektroteknik

    Author : Andreas Bodegård; [2022]
    Keywords : FFR; frequency regulation; PowerFactory; DIgSILENT; grid scale storage; inertia; power system; rotor-angle stability; frequency stability; modal analysis; kundur two area model; nordic32;

    Abstract : The increasing amount of renewable energy sources is applying more and more pressure on today’s power system. Additionally, plannable sources of energy, which are mostly non-renewable, are being decommissioned at a high rate to combat climate change. READ MORE

  4. 23. Dynamic Analysis of Double Tee Floors Subjected to Human Activity : A comparison between a standard- and a modified cross section

    University essay from KTH/Bro- och stålbyggnad

    Author : Bjondina Hoti; Fadi Simonides; [2022]
    Keywords : ;

    Abstract : Building with larger spans and more slender elements is more common today since the demand for open floor plans has increased. The consequence is that low frequency floors and vibration problems arise. Such floors tend to undergo large vibrations since their low eigenfrequency coincides with the frequency which human activities have. READ MORE

  5. 24. Computationally Efficient Methods in Topology Optimization

    University essay from Lunds universitet/Hållfasthetslära; Lunds universitet/Institutionen för byggvetenskaper

    Author : Vilmer Dahlberg; [2022]
    Keywords : Topology Optimization; Eigenfrequency; Eigenmode; Reduced Order Model; Sensitivity Analysis; Deflation; Technology and Engineering;

    Abstract : In topology optimization, iterative, gradient-based methods are used to find the material distribution of structures which maximizes some objective function, typically the structures' stiffness, or in some cases the fundamental frequency. Finite element analysis is used to compute the structural response in each iteration, leading to large systems of equations. READ MORE

  6. 25. Wood and moisture-induced strains in a large deformation setting in 3D

    University essay from Linnéuniversitetet/Institutionen för byggteknik (BY)

    Author : Fredrik Ström; Anwar Obeido; [2022]
    Keywords : Total Lagrangian; Finite element method; Large deformation theory; Deformation gradient decomposition; Moisture-induced strains; Hygroscopic; Orthotropic.;

    Abstract : Many studies have previously been done on moisture-induced strains in wood. An in- finitesimal/engineering strain model has been used for most of these studies, which is often an accurate approximation for small rotations. However, if large deformations oc- cur, then fictive strains are obtained resulting from the simplified engineering strain. READ MORE