TRANSACTIONS OF THE KRYLOV STATE RESEARCH CENTRE

Science journal

 
ISSN (print) 2542-2324 /(online) 2618-8244


Articles of The Transactions of KSRC








Dynamic loads in shaft lines of ice going ships



Full text article ( in russian)

Year

 
2019

Issue

 
20191

Volume

 
1

Pages

 
177-182

Caption

 
Dynamic loads in shaft lines of ice going ships

Authors

 
Chernyshev A.A., Bukharina G.I., Kontievskaya O.A.

Keywords

 
ice-going ships, operational monitoring, shaft line, torsional vibrations, resonance, blade harmonics.

DOI

 
10.24937/2542-2324-2019-1-S-I-177-182

Summary

 
This paper gives the results of analytical and experimental data on localization of structural damage, obtained through comparison of vibration modes for intact and damaged structure. The paper studies a standard dog-bone sample used for highcycle fatigue tests, the analysis being performed for its finite-element model. Necking damage of the sample was simulated by step-by-step elimination of elements from the model. Physical tests were performed as per the same approach. This paper studies the following damage localization methods: direct method of shape variation; shape curvature method and damage index method. The analysis of vibration shapes performed as per various approaches yielded damage locations and made it possible to identify the most accurate of above-mentioned methods.

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