Advances of Research on Mode Localization in Mistuned Cyclically Periodic Structures

Abstract:

The mode localization phenomenon in mistuned cyclically periodic structures has been a hot spot in the past few decades. According to numbers of documents, the fundamental concepts, mechanism, main research methods, and the main results of mode localization are introduced; the current research status of the mode localization is summarized. The possiblity of mode localization in a telescope reflector model has been analyzed by using Finite Element Method. We also illustrate the problems for further studies, including: the unified modeling and analysis theory with more extensive applicability and better analytical accuracy; determining how to properly introduce mistuning parameters that can reflect the true state of the structure; constructing mode localization factor which can sensitively and effectively reflect the effect of mode localization; developing new damage identification method considering the influence of mode localization; how to make use of the localization characteristic to control the vibration level of the important sub-structure and improve the sensitivity of the periodic structure to the random detuning.

• Periodical: Applied Mechanics and Materials (Volumes 405-408)
• Pages: 3198-3203
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.405-408.3198
• Online since: September 2013
• Authors: Zhan Hui Liu, Wei Liu, Wei Cheng Gao, Xiang Cheng
• Keywords: Cyclically Periodic Structures, Mistuning, Mode Localization, Numerical Simulation

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