Tension–torsion fatigue behaviour of wire ropes in offshore moorings

Ridge, I.M.L.

doi:10.1016/j.oceaneng.2009.03.006

Cited by 21 publications

(8 citation statements)

References 8 publications

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“…Considering a finite element model of a simple straight strand, Nawrocki [9] have introduced Cartesian isoparametric formulation. Jiang [10] ; with mechanical tension variable (7 to 36% of the ultimate tensile strength (UTS)) with and without the inclusion of Stockbridge dampers. Francesco Foti, 2016, A new formulation for modelling the elastic-plastic behaviour of metallic strands subjected to axial-torsional loads is presented.…”

Section: IImentioning

confidence: 99%

Modeling and Analysis of Wire Rope for Transmission Line under Various Loading Conditions

Duggal¹

2018

IJRASET

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Wire ropes are considered and applied to industrial applications that includes mining, off-shore oil production, and towing or mooring ships. Wire ropes are also used extensively in such diverse transportation applications as ski-lifts, cable cars, bridges, cranes and elevators. Premature failure of ropes can be costly in any application. In mining, the human costs due to the premature failure of a rope can be devastating. The wire rope considered in present research is IS 398, ACSR Conductor, Theoretical calculations are performed to calculate sag and slack for the rope. Distance between poles is taken as considered 30480mm. Thermal elongation with temperature variation is calculated and also simulated and analyzed with ANSYS design software. Aeolian vibration frequency is calculated to obtain frequencies with different wind speed, Software results for frequencies are found similar to theoretically calculated results. Experimental analysis is performed in IIT Indore to conduct tensile. It is found that breaking load is approximately 28KN and software simulation results for tensile test are approx. 30KN. Present research ultimately tried to focus on the modeling and analysis of wire rope for transmission lines considering the pole distance and sag of the wire rope, further comparing the simulated results with the theoretical, and trying to make a common set up for the test and validation of results experimentally.

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Section: IImentioning

confidence: 99%

Modeling and Analysis of Wire Rope for Transmission Line under Various Loading Conditions

Duggal¹

2018

IJRASET

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“…But six strand wire is often used to connect the upper end of the fiber rope to the moored platform and also to connect the lower end to seafloor anchors (Ridge, 2009).…”

Section: Modeling Tension-torsion Fatiguementioning

confidence: 99%

New European rope test facility

Ridge

Flory²,

Banfield³

2014

2014 Oceans - St. John's

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In recent years several European rope testing laboratories either downsized or closed. But the demand for rope testing has increased, particularly for application specific testing which models service life conditions of ropes, chains and cables. Tension Technology International (TTI), a leading consultancy firm in the field, identified this need and set up a new testing company: TTI Testing in Wallingford, UK, to provide these services to the public.This paper discusses the special requirements for testing wire and fiber ropes, chains and cables. It describes TTI Testing's specialized test equipment. Finally, it presents case studies which show how a carefully designed testing program can be used to represent, replicate and understand rope behavior in service. This improves understanding can be used to improve rope design, predict service life and develop discard criteria, and thus lead to safer and more economical operation.The paper will be of particular interest to makers and users of wire and fiber rope, chain, and cables.

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“…Then, this last condition generates the torsion fatigue. The torsional oscillations are consequence of tensile load fluctuations [22], [23], [24], [25] as well as torsional oscillations conduce to fluctuations in the rope tensile load. When a rope is twisted the original construction is modified.…”

Section: Steel Wire Rope Birdcagingmentioning

confidence: 99%