000015894 001__ 15894
000015894 005__ 20161115135332.0
000015894 04107 $$aeng
000015894 046__ $$k2013-06-12
000015894 100__ $$aVarelis, G.
000015894 24500 $$aExperimental and Numerical Investigation of Pressurized Pipe Fittings Under Strong Cyclic Loading Conditions

000015894 24630 $$n34.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000015894 260__ $$bNational Technical University of Athens, 2013
000015894 506__ $$arestricted
000015894 520__ $$2eng$$aThe present work examines the behavior of pipe fittings (elbows, Tee-joints) subjected to strong cyclic bending loading in the presence of internal pressure. In the first part of this work the experimental procedure is presented in detail. The tests are conducted in a constant amplitude displacement-controlled mode resulting to failures in the low-cycle fatigue range. The overall behavior of each tested specimen, as well as the evolution and concentration of local strains are monitored throughout the testing procedure. Different internal pressure levels are used in order to examine their effect on the fatigue life of the specimens. The above experimental investigation is supported by rigorous finite element analysis. Using detailed dimensional measurements and material testing obtained prior to specimen testing, detailed numerical models are developed to simulate the conducted experiments. Advanced cyclic plasticity material models are employed for the simulation of the tests. Emphasis is given on the local strain development at the critical part of the elbow where cracking occurs. Finally, the results of the present investigation are compared with available design provisions in terms of both ultimate capacity and low-cycle fatigue.

000015894 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015894 653__ $$a

000015894 7112_ $$aCOMPDYN 2013 - 4th International Thematic Conference$$cIsland of Kos (GR)$$d2013-06-12 / 2013-06-14$$gCOMPDYN2013
000015894 720__ $$aVarelis, G.$$iKaramanos, S.$$iDiamanti, K.$$iPapatheoharis, T.$$iPerdikaris, P.$$iFerino, J.$$iLucci, A.$$iDemofonti, G.
000015894 8560_ $$ffischerc@itam.cas.cz
000015894 8564_ $$s34702$$uhttps://invenio.itam.cas.cz/record/15894/files/1650.pdf$$yOriginal version of the author's contribution as presented on CD, section: CD-MS 10 SEISMIC ANALYSIS AND DESIGN OF INDUSTRIAL FACILITIES AND PIPELINES
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000015894 962__ $$r15525
000015894 980__ $$aPAPER