Search for dissertations about: "FEM"

Showing result 1 - 5 of 830 swedish dissertations containing the word FEM.

  1. 1. Demagnetization Studies on Permanent Magnets Comparing FEM Simulations with Experiments

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Stefan Sjökvist; Uppsala universitet.; [2014]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Permanent magnet; demagnetization; simulation; FEM; Comsol Multiphysics; VAWT; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Abstract : In a world where money often is the main controlling factor, everything that can be tends to be more and more optimized. Regarding electrical machines, developers have always had the goal to make them better. READ MORE

  2. 2. Closed-die forging and slab hot rolling with focus on material yield some industrial problems analysed by FEM

    University dissertation from Stockholm : KTH

    Author : Esa Ervasti; KTH.; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material yield; Closed-die forging; Hot rolling; Cracks; Macro-inclusions; Steel; FEM; TECHNOLOGY Industrial engineering and economy; TEKNIKVETENSKAP Industriell teknik och ekonomi;

    Abstract : The thesis is focussed on improving the material yield in closed-die forging and rolling. The former is restricted to the manufacturing of heavy crown wheels and front axle beams and the latter to the hot rolling of steel slabs. To enhance the yield the commercial FE-codes Form2D and Dyna3D are used. READ MORE

  3. 3. Variation Simulation Customized for Composites by Including FEM Simulations of Orthotropic Lamina

    University dissertation from Göteborg : Chalmers University of Technology

    Author : Cornelia Jareteg; Göteborgs universitet.; Gothenburg University.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Geometry assurance; FEM; Composites; Shell model; Process variation; Method of Influence Coefficients; Monte Carlo; Orthotropic material; Manufacturing; Tolerance analysis; Variation simulation; Spring-in;

    Abstract : The use of composite materials is increasing in many fields of production. Composite manufacturing, as well as other fields of production, suffers from uncertainties resulting in products that deviate from the specification. Geometry assurance is a common procedure used to keep the variations in product assemblies under control. READ MORE

  4. 4. The interdependence of plastic behaviour and final properties of steel wire, analysed by the finite element method

    University dissertation from Örebro : Örebro universitetsbibliotek

    Author : Henrik Överstam; Örebro universitet.; [2004]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Technology; FEM; defects; steel wire; wire drawing; rolling; forging; Teknikvetenskap; TECHNOLOGY; TEKNIKVETENSKAP; Maskinteknik; Mechanical Engineering;

    Abstract : The finite element method (FEM) has been used in order to study the interdependence of plastic behaviour and final properties in steel wire. Three processes metal forming have been studied: billet forging, wire rod rolling, and cold drawing. READ MORE

  5. 5. Electrical Bioimpedance Cerebral Monitoring From Hypothesis and Simulation to First Experimental Evidence in Stroke Patients

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Seyed Reza Atefi; KTH.; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Biompedance Spectroscopy; Stroke; Hemorrhage; Ischemia; FEM; HFSS; Electrical Potentials; Människan i vården; Människan i vården;

    Abstract : Stroke is amongthe leading causes of death worldwide and requires immediate care to prevent death or permanent disability. Unfortunately, the current stateof stroke diagnosis is limited to fixed neuroimaging facilities that do not allow rapid stroke diagnosis. READ MORE