Research on Modal Analysis of Aero-Engine Key Parts Structure Damage

Abstract:

As the premise, exploring aero-engine structure parts damage accurately can guarantee safety of the aero-engine structure parts, which are restricted by the working condition under the high temperature, high pressure and high speed. Analyzed the structure parts modal parameters by the modal theory, and researched the facts how to influence the modal parameters based on the different damage extent of the structure parts. Then construct the different damage extent structure models on the structure junctions with the finite element analysis method. At last, constructed and verified seven models with the example of aero-engine turbine structure damage in the constant temperature. The results were shown that the characteristic parameters with the inherent frequency and the inherent frequency deviation square can explore the structure damage accurately, but have no significant influence on the structural damages. So it will be important for us to ensure reliable operation and structure damage identification timely by the proposing the structure damage parameters.

• Periodical: Key Engineering Materials (Volume 693)
• Pages: 187-193
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.693.187
• Online since: May 2016
• Authors: Yanxiao Huang*, Shu Ming Li, Ying Zhang
• Keywords: Aero-Engine, Modal Analysis, Structure Damage, Structure Parts

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DOI: 10.1088/0964-1726/10/3/303