Today, an important challenge for offshore wind energy is to design efficient and reliable offshore wind turbines (OWTs). The overall damping of OWTs plays an important role in the design process as it limits the amplitude of the OWT dynamic response at frequencies near resonance. Therefore, an accurate estimation of OWTs damping is necessary for the efficient design of these systems. The foundation damping is one of the main sources overall turbine damping and is the least well understood. This paper presents a critical review of recently published studies on foundation damping for OWTs on monopiles and explains how soil damping contributes to the total damping of OWTs. It also reviews the main methods that have been used for the estimation of foundation damping in numerical and experimental studies. In addition, the importance of damping to the OWTs fatigue life is discussed. Finally, a discussion is provided on the challenges to be overcome and recommendations for the accurate estimation of foundation damping.

如今，海上风能的一项重要挑战是设计高效，可靠的海上风轮机（OWT）。OWT的整体阻尼在设计过程中起着重要作用，因为它限制了OWT动态响应在接近共振频率时的幅度。因此，为有效设计这些系统，必须对OWT的阻尼进行准确估算。基础阻尼是整个涡轮机阻尼的主要来源之一，了解得最少。本文对最近发表的有关单桩OWT的基础阻尼的研究进行了批判性综述，并解释了土壤阻尼如何对OWT的总阻尼做出贡献。它还回顾了在数值和实验研究中用于估计基础阻尼的主要方法。此外，讨论了阻尼对OWT疲劳寿命的重要性。最后，提供了关于要克服的挑战的讨论以及对基础阻尼的准确估计的建议。