Can we estimate the actual stiffness and mass of soil contributing to vibrations of monopiles for offshore wind turbines?

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• Dr Luke J Prendergast, University of Nottingham, UK
• Wednesday 10 February 2021, 19:00-20:00
• Delivered online via Zoom.

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The offshore wind sector has experienced significant growth in recent years. This has led to the development of super-large wind turbines, which require ever larger foundations. Monopile sizes have been growing, meaning the design approaches used for them are no longer relevant. Estimating soil-structure interaction stiffness (and mass) is becoming more challenging, and is paramount to safe design. This talk presents an overview of a finite-element model updating approach to estimate the stiffness and mass of vibrating piles using frequency response functions. The approach can be used to develop reference damage detection models or to estimate the operating stiffness of these systems in operation, thereby enabling updating of design approaches.

This talk is part of the Engineering Department Geotechnical Research Seminars series.

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