Sökning: "thermomechanical stresses"

Hittade 5 uppsatser innehållade orden thermomechanical stresses.

  1. 1. Implementation of thermomechanical laser welding simulation : Predicting displacements of fusing A AISI304 T-JOINT

    Kandidat-uppsats, Högskolan i Skövde/Institutionen för ingenjörsvetenskap

    Författare :Anton Rolseth; Anton Gustafsson; [2021]
    Nyckelord :Laser welding; Finite element method; ABAQUS; Thermomechanical simulation; Heat source models; DFLUX; Element activation;

    Sammanfattning : Laser welding is an advanced joining technique with the capability to form deep, narrow, and precise welds. Numerical models are used to simulate the process in attempts of predicting distortions and stresses in the material. This is done to reduce physical testing, optimize processes and enable integrated product- and process development. LÄS MER

  3. 2. Thermomechanical stress analysis of the main insulation system of traction electrical machines

    Uppsats för yrkesexamina på avancerad nivå, Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Författare :Dahman Ismail; Alexis Andrei; [2020]
    Nyckelord :finite element analysis; thermo-mechanical stress; heavy-duty vehicle; electrical machine; insulation system; coupled-temperature displacement analysis; finita element analys; termomekaniska spänningar; lastbilar; elektriska motorer; isolering; termisk kopplingsförbindelse;

    Sammanfattning : More efficiency heavy-duty vehicles are developed with higher range, updated electronic and mechanical parts. The fuel efficiency and pollution of carbon dioxide need to be lower to achieve new EU regulations. The global population increases with an increased number of heavy-duty vehicles. This, in turn, increases the emission. LÄS MER

  4. 3. Material parameter study for aheavy-vehicle exhaust manifoldusing the finite element method : to increase component lifetime and decrease its environmental impact

    Master-uppsats, Linköpings universitet/Konstruktionsmaterial

    Författare :David Ek; [2019]
    Nyckelord :Thermomechanical fatigue; TMF; material parameter study; finite element method; FEM;

    Sammanfattning : The thesis originates from a need to meet stricter environmental regulations for Scania, to reduce fuel consumption and emission from heavy-vehicles. Scania aims to fulfil these requirements by increasing combustion pressure and temperature. These conditions are tougher for the engine components and they shorten their lifetime. LÄS MER

  5. 4. Environmental stress of electrical machine winding insulation

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Elektricitetslära

    Författare :Martin Risemark Eriksson; [2017]
    Nyckelord :;

    Sammanfattning : The conducting winding of an electrical machine is insulated in order to prevent any short circuits to occur within the machine. This insulation is during its lifetime exposed to several environmental stresses and therefore plays an important role in the life length of the machine. LÄS MER

  7. 5. Life Length and Stress Tests of Electric Machines for Electric Vehicles

    Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

    Författare :Raul Sanz Desco; [2017]
    Nyckelord :Electrical machines; winding insulation; power cycling; thermomechanical stresses; winding cooling;

    Sammanfattning : Electrical machines have been widely used along the last decades with large life length under operating conditions. However, they will become more important in the upcoming years because of the emerging electric car industry. Thus, the maintenance cost of this technology can be reduced by extending the lifetime in the electrical machines. LÄS MER