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Fatigue resistance of steel ropes: failure criterion: Background to the verification in prEN 1993‐1‐11:2020
Author(s) -
Maljaars Johan,
Misiek Thomas
Publication year - 2021
Publication title -
steel construction
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.443
H-Index - 8
eISSN - 1867-0539
pISSN - 1867-0520
DOI - 10.1002/stco.202000058
Subject(s) - rope , structural engineering , wire rope , fracture (geology) , materials science , reliability (semiconductor) , fatigue limit , bridge (graph theory) , stress (linguistics) , ultimate tensile strength , fatigue testing , forensic engineering , composite material , engineering , medicine , power (physics) , linguistics , physics , philosophy , quantum mechanics
Many steel rope systems are subjected to fluctuating tensile loads and therefore can fail due to fatigue. Available fatigue test data indicate that rope diameter, mean stress, socket type, lay angle and rope length influence the fatigue resistance. Most of the tests were terminated before full failure of the ropes. This paper shows that the test termination criterion, such as fracture of the first wire, fracture of 5 % of the wires or full rope fracture, has a large influence on the resulting fatigue resistance. A probabilistic analysis is carried out for a rope system in a bridge, demonstrating that the required structural reliability levels are met when considering full failure as the end‐of‐life criterion for ropes.