Lifetime of large twisted and tension-tension loaded wire ropes

• Applicant: Professor Dr.-Ing. Robert Schulz, since 7/2019
• Subject Area: Engineering Design, Machine Elements, Product Development
• Term: from 2015 to 2021
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 279164903

The proposed research project aims to develop a basic understandingof the size effect on the life of wire ropes with combined tensiontensionand torsional loads, building up on the test series of Wehking /Ernst conducted in 2011 with 12 mm. In addition, a useful data basefor the calculation and interpretation of standing guy ropes, more than20,000 in the offshore area in use, shall be developed. The results willenable tension-tension loaded wire ropes to use their superiorpotential in durability. In addition, a security vulnerability in terms ofpreviously unknown influences in torsion is closed. The ropes should be tested as in the at IFT performed and positive peer reviewedresearch project with systematic variation of the relevant parametersin tension-tension-tests to break. The evaluation is done using thegenerated in Wehking / 2011 Ernst basis of calculation. The relevantparameters are defined:1. rope construction,2. rope diameter,3. twisting of the wire about its longitudinal axis,4. amplitude of the tension-tension load and5. underload of the tension-tension load.

• DFG Programme: Research Grants
• Ehemaliger Antragsteller: Professor Dr.-Ing. Karl-Heinz Wehking, until 7/2019