000012752 001__ 12752
000012752 005__ 20160920162643.0
000012752 04107 $$aeng
000012752 046__ $$k2016-09-05
000012752 100__ $$aSousa, A. de Castro e
000012752 24500 $$aUltra low cycle fatigue of welded steel joints under multiaxial loading

000012752 24630 $$n6.$$pInsights and Innovations in Structural Engineering, Mechanics and Computation
000012752 260__ $$bTaylor and Francis Group, London, UK
000012752 506__ $$arestricted
000012752 520__ $$2eng$$aUltra Low Cycle Fatigue (ULCF) is a phenomenon that can be summarily defined as the deterioration of material properties under high amplitude cyclic loading, under which failure is reached typically within ten to twenty cycles. This phenomenon is observed in extreme loading scenarios such as earthquakes or exceptional winds where large cyclic strains are expected. Particularly sensitive are structural components that are designed to absorb the loading’s energy through plastic dissipation, like moment or shear links in eccentrically braced frames. The demands on such components can vary significantly throughout its duration due to their variable multi-directional nature and, as such, it is important to assess the resistance of structural joints under multiaxial states. This paper will present an experimental campaign done on a welded high strength steel (S770QL) tube to plate joint. This joint was submitted to high cyclic bending, pure torsional and combined proportional bending and torsional loadings. Weld profile and strain measurements at the weld toe were performed using Digital Image Correlation (DIC). An analysis of more than sixty test results will be presented so as to provide an adequate resistance model for ULCF life estimations.

000012752 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012752 653__ $$a

000012752 7112_ $$aSixth International Conference on Structural Engineering, Mechanics and Computation$$cCape Town, South Africa$$d2016-09-05 / 2016-09-07$$gSEMC2016
000012752 720__ $$aSousa, A. de Castro e$$iNussbaumer, A.
000012752 8560_ $$ffischerc@itam.cas.cz
000012752 8564_ $$s472295$$uhttps://invenio.itam.cas.cz/record/12752/files/200.pdf$$yOriginal version of the author's contribution as presented on CD, 200.pdf.
000012752 962__ $$r12552
000012752 980__ $$aPAPER