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Abstract：
In recent decades, nonlinear damping identification (NDI) in structural dynamics has attracted wide research interests and intensive studies. Different NDI strategies, from conventional to more advanced, have been developed for a variety of structural types. With apparent advantages over classical linear methods, these strategies are able to quantify the nonlinear damping characteristics, providing powerful tools for the analysis and design of complex engineering structures. Since the current trend in many applications tends to more advanced and sophisticated applications, it is of great necessity to work on developing these methods to keep pace with this progress. Moreover, NDI can provide an effective and promising tool for structural damage detection purposes, where the changes in the dynamic features of structures can be correlated with damage levels. This review paper provides an overview of NDI methods by explaining the fundamental challenges and potentials of these methods based on the available literature. Furthermore, this research offers a comprehensive survey of different applications and future research trends of NDI. For potential development and application work for nonlinear damping methods, the anticipated results and recommendations of the current paper can assist researchers and developers worldwide to find out the gaps and unsolved issues in the field of NDI.
摘要：
近几十年来,结构动力学中的非线性阻尼识别（NDI）引起了广泛的研究兴趣和深入研究。不同的NDI策略，从传统到更先进，已开发用于各种结构类型。与经典线性方法相比，具有明显的优势，这些策略能够量化非线性阻尼特性，为复杂工程结构的分析和设计提供强大的工具。由于当前许多应用的趋势倾向于更先进和复杂的应用，非常有必要努力开发这些方法以跟上这一进展。此外，NDI可以为结构损伤检测目的提供有效且有前途的工具，其中结构动态特征的变化可以与损伤水平相关。本文通过基于现有文献解释这些方法的基本挑战和潜力，对NDI方法进行了概述。此外，这项研究提供了NDI的不同应用和未来研究趋势的全面调查。对于非线性阻尼方法的潜在开发和应用工作，本论文的预期结果和建议可以帮助全世界的研究人员和开发人员找出NDI领域的差距和未解决的问题。
