Visco-elasto-plastic behaviour law of a Polyamide 6 floating wind turbine mooring line based on long-term creep tests
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Design of floating wind turbine mooring lines and choice of the suitable material are crucial for the systems’ design and scaling. However, the ropes of those mooring lines have a complex visco-elasto-plastic behaviour that is therefore difficult to model. An additional modelling difficulty is that the expected lifetime is up to 25 years andit is of course not reasonable to perform such long experiments. [...] Civier et al. (2024) developed the POLYAMOOR one-dimension law. This law is composed of a fast spring, representing the instantaneous elastic response, and a time-dependant or viscous part. This model is accurate to simulate the response to short-term loadings [...], but is not enough accurate for long-term loadings, such as long-term creep tests [...].