S-N curve for full-locked coil ropes Background to the verification in prEN 1993-1-11:2020

Many steel rope systems are subjected to fluctuating tensile loads and therefore can fail due to fatigue. There are indications that the fatigue resistance of full-locked coil ropes is somewhat lower than that of other types of rope. Fatigue test data on full-locked coil ropes have been collected, but they terminate at different conditions. A semi-empirical model is employed to extrapolate the test results to full failure of the rope. The resulting S-N curve is being adopted for the revision of European standard prEN 1993-1-11.

Automated summary

Many steel rope systems are prone to fatigue failure due to fluctuating tensile loads. Full-locked coil ropes exhibit slightly lower fatigue resistance compared to other types of ropes. Test data on full-locked coil ropes have been extrapolated using a semi-empirical model to revise the European standard prEN 1993-1-11.