Method based on elastic rod eigenfrequencies for determining the elastic support pliability

Abstract

This paper is devoted a method based on the first two frequencies of rod's natural vibrations. The proposed method is for determining а support rigidity of a cantilever rod. Such problem arises in the implementation of non-destructive testing of the axial compressor rotor blade root of a gas turbine engine (GTE) directly during its opera-tion. When a certain decision can be made in the process of its compressor blade operational oscillations about the possibility of its further operation or about changing its operating mode. The practical implementation of such method is currently provided by the GTE with highly intel-ligent automated control and management systems, in-cluding sensors that control the vibration frequencies of the most critical structural elements.