Validation of boundary element method for assessment of weld joints accounting for notch stressSkerbiš, Rok (Avtor) Vesenjak, Matej (Mentor) Vohar, Bojan (Komentor) Mössler, Werner (Komentor) weld jointboundary element methodfinite element methodspatial discretizationnotch stressRobust, automated mesh generation on arbitrary weld joint geometries, using finite element method (FEM) is a problematic task. It was previously discovered, that an arbitrary weld joint geometry can be parameterized inside a CAD environment [1], however when it comes to domain discretization and boundary conditions assignment, the parameterized approach becomes too demanding inside FEM. This results in long FEM model preparation times and sometimes in problems with the parametric model itself, which leads to a need for an additional numerical method - boundary element method (BEM), which overcomes this issue and is beneficial in this case. BEM is a numerical method, that in addition to other applications finds a use in the elasto-mechanic problems, where the only concern is the boundary of the considered geometric domain. Since notch stress calculations of weld joints fall into this category, their calculation can be carried out with it. Since there is not much available information on whether or not such calculations are a suitable alternative for the currently used FEM, this thesis had to be confirmed through a structured and step by step procedure. First, a notch mesh quality study has been made, then other entities followed. It was discovered that BEM is applicable to the problem and capable of calculating results with sufficient quality. Furthermore, the parameter driven approach and automated calculation provide for additional advantageous potentials.[R. Skerbiš]20222022-10-05 21:32:43Magistrsko delo/naloga83251UDK: 519.6:621.791.053(043.2)COBISS_ID: 151183619sl