20.500.12556/DKUM-98161 Effect of misalignment types on the buckling behavior of large diameter girth-welded pipelines This study investigates the bending capacity of large diameter girth-welded pipes. A nonlinear buckling analysis model subjected to combined internal pressure and bending loads is established. The effects of misalignment types, amplitudes, angles and mixed misalignments on the buckling behavior are studied. The results show that the bending capacity decreases significantly as the misalignment amplitude increases. Unequal thickness misalignment poses the greatest risk, exhibiting the most significant reduction in critical compressive strain. Different misalignment types exhibit high sensitivity to angle variations. The critical compressive strain increases as the misalignment angle increases for pipelines with offset misalignment, pipelines with ovality misalignment in both pipe segments, and pipelines with ovality misalignment in one pipe segment. The effects of mixed misalignment can be determined by the maximum misalignment on the compression side and the corresponding geometric characters. The mixed misalignment causes a decrease in critical compressive strain by 21.8%-56.6%, significantly weakening bending capacity and accelerating buckling. girth-welded pipes local buckling critical compressive strain unequal thickness misalignment combined loads obočno varjene cevi lokalno upogibanje kritična tlačna deformacija neenakomerna debelina kombinirane obremenitve true false true Elsevier Angleški jezik Slovenski jezik https://www.sciencedirect.com/science/article/pii/S0308016126000864?via%3Dihub Članek v reviji 2026-05-21 10:35:33 2026-05-21 10:35:34 2026-05-22 03:16:12 0000-00-00 00:00:00 2026 0 0 19 str. part 2, [article no.] 105830 Vol. 222 Aug. 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2026-01-27 2026-04-03 2026-04-07 539.3:620.1 275205123 10.1016/j.ijpvp.2026.105830 1879-3541 https://www.sciencedirect.com/science/article/pii/S0308016126000864?dgcid=coauthor 1 0902f683-54f0-11f1-80bc-00155d580e34 https://dk.um.si/Dokument.php?lang=slv&id=206296 1-s2.0-S0308016126000864-main.pdf 1-s2.0-S0308016126000864-main.pdf 1 06EB2940566605024D9ADB4987F4A951 619ecf86bdd6fbf16a44a69e70a914c65380b13804fc27e6cdc15c78220c70d8 70817f3b-54f0-11f1-80bc-00155d580e34 https://dk.um.si/Dokument.php?lang=slv&id=206298 Fakulteta za strojništvo 0 0 0