Keywords • finite element method • ammonia transport tank • lap joint • P460NL2 steel Abstract Presented is a comparison of stress and strain distribution in lap welded joints of different geometries, which are part of a pressure vessel used as an ammonia transport tank. For this purpose, two numerical models are developed using finite element method (FEM). The models are subjected to tensile load and the obtained stress and strain results are compared in order to determine how the difference

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... welded joint dimensions affects the behaviour of the weld as a whole. It is concluded that in this case, the differences in distribution and stress/strain values are negligible, as expected due to very similar mechanical properties of the materials used. Ključne reči • metoda konačnih elemenata • cisterna za amonijak • preklopni spoj • čelik P460NL2 Izvod U ovom radu je prikazano poređenje raspodele napona i deformacija u preklopnim zavarenim spojevima različite geometrije posude pod pritiskom za transport amonijaka. U tu svrhu su razvijena dva numerička modela zasnovana na metodi konačnih elemenata (MKE). Modeli su opterećeni na zatezanje i dobijeni rezultati napona i deformacije su upoređeni kako bi se utvrdilo u kolikoj meri razlike u dimenziji zavarenog spoja utiču na njegovo ponašanje. Zaključuje se da su razlike u raspodeli i veličinama napona/ deformacija zanemarljive u ovom slučaju, usled veoma slič-nih mehaničkih osobina primenjenih materijala.