Search for dissertations about: "Johan Walter"

Showing result 1 - 5 of 7 swedish dissertations containing the words Johan Walter.

  2. 1. Elastic Press and Die Deformations in Sheet Metal Forming Simulations

    Author : Johan Pilthammar; Sharon Kao-Walter; Mats Sigvant; Roald Lingbeek; Blekinge Tekniska Högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Sheet Metal Forming; Stamping Die; Stamping Press; Structural Analysis; Finite Element Simulation; Optimization; Digital Image Correlation; Inverse Modeling;

    Abstract : Never before has the car industry been as challenging, interesting, and demanding as it is today. New and advanced techniques are being continuously introduced, which has led to increasing competition in an almost ever-expanding car market. READ MORE

  4. 2. Towards Virtual Tryout and Digital Twins : Enhanced Modeling of Elastic Dies, Sheet Materials, and Friction in Sheet Metal Forming

    Author : Johan Pilthammar; Sharon Kao-Walter; Mats Sigvant; Wolfram Volk; Blekinge Tekniska Högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Sheet Metal Forming; Stamping Die; Virtual Tryout; Digital Twin; Stamping Press; Structural Analysis; Finite Element Simulation; Optimization; Digital Image Correlation; Inverse Modeling; Maskinteknik; Mechanical Engineering;

    Abstract : Competition and complexity in the global car market are continuously increasing. To gain an edge in the market while making a profit, each competitor in the market needs a strong focus on technology development. Such a focus will increase the value of the product for the customers. READ MORE

  5. 3. Cultural activities and health : Singer, patient, and healthcare staff perspectives. From feelings to biology

    Author : Christina Grape Viding; Eva Bojner Horwitz; Töres Theorell; Walter Osika; Johan Hallqvist; Camilla Kylin; Uppsala universitet; []
    Keywords : arts; burnout; cultural activities; focus groups; health; healthcare staff; joy; singers; stress; wellbeing; women; Family Medicine; Allmänmedicin; Medicinsk vetenskap; Medical Science;

    Abstract : Objectives. The aim of this thesis was to explore and illuminate possible associations between various cultural activities and assessments of well-being, health, stress and emotions in a didactic setting and healthcare settings for singers, patients, and healthcare staff. Material and methods. READ MORE

  6. 4. Shear Fracture and Delamination in Packaging Materials : A study of Experimental Methods and Simulation Techniques

    Author : Md. Shafiqul Islam; Sharon Kao-Walter; Christian Johansson; Johan Tryding; Blekinge Institute of Technology; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Package opening; Shear test specimen; Stress intensity factor; Finite Element simulation; Scanning electron microscopy; Polymers; Interlaminar shear delamination;

    Abstract : Packages are the means of preservation, distribution and convenience of use for food, medicine and other consumer products. Package opening is becoming complicated in many cases because of cutting cost in design and production of opening techniques. READ MORE

  7. 5. Main-circuit considerations of power coverters for integral motors

    Author : Karsten Kretschmar; Hans-Peter Nee; Johan Walter; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electronics; Permanent magnet integral motor; Small DC link; Elektronik; Electronics; Elektronik;

    Abstract : This thesis deals with different converter topologies for a 15kW permanent magnet (PM) integral motor. An integral motor combines the motor and the power electronics in one unit. The main objective is to find suitable converter alternatives for an integral motor. READ MORE