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Showing result 1 - 5 of 8 essays matching the above criteria.

  1. 1. Finite element modelling of LV transformer winding to simulate dynamic events occurring under short circuit : In Ansys Mechanical

    University essay from Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Author : Madhu Venkata Sri Prudhvi Bikkina; [2020]
    Keywords : Ansys Mechanical; LV winding; Power Transformer; Short-circuit; Spiraling; Torsional Mode Shapes;

    Abstract : The ability to withstand a short circuit is the most essential feature of a power transformer. The most important reason to design short-circuits proof transformers is to ensure the reliability of the power grid (avoiding black outs etc.) and safety (fire and explosion in case of failure). READ MORE

  3. 2. Expansion of Existing Gravity-Based Offshore Wind Turbine Foundations

    University essay from KTH/Betongbyggnad

    Author : Álvaro Hernando Cabrero; [2020]
    Keywords : Gravity-Based Foundation; climate actions; expansion; failure mode; width; Lillgrund;

    Abstract : Wind energy is one of the most promising sources of renewable energy worldwide. Its utilization has substantially increased for the last decades, both onshore and offshore. Offshore wind energy will have a lot to offer within the following decades, thus their foundations need to be prepared. READ MORE

  4. 3. Study of a Body Subjected to a Vertical Drop into Water – Experiment and Simulations

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Josefin Andersson; Monika Englund; [2018]
    Keywords : ;

    Abstract : In computational fluid dynamics (CFD), the computational domain can be discretized using mesh- based methods or particle based methods. During this project; a CFD method that uses smoothed particle hydrodynamics (SPH), in which the computational domain is discretized by particles, is modelled and compared to mesh-based CFD methods, in which the domains are broken into a set of discrete volumes. READ MORE

  5. 4. Additive weld manufacturing and material properties effect on structural margins

    University essay from KTH/Lättkonstruktioner

    Author : Daniel Arvidsson; [2018]
    Keywords : ;

    Abstract : the FE analyses. Traditionally all parts are modeled with isotropic base material. Analyses are made on a part of the nozzle which includes both a butt weld and metal deposition and which is an interface to another part causing loads that has to be sustained by the weld and the MD. READ MORE

  6. 5. Method for quality assurance of mine-surrogates

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : Niclas Forsman; [2014]
    Keywords : ;

    Abstract : Ett av projekten som drivs av Försvarets Materielverk (FMV) går ut på att kvalitetssäkra de surrogatminor som används för att utvärdera minskyddet hos stridsfordon. Surrogatminorna gjuts i TNT av företaget Nammo LIAB och används sedan enligt en testprocess som är reglerad av standarden STANAG 4569 (Edition 2) Protection Levels for Occupants of Armoured Vehicles och AEP55 Procedures for evaluating the protection level of armoured vehicles. READ MORE