Open AccessFuzzy estimates of resonance frequencies for three-layer composite cylindrical panels in smart aerospace and industrial structures
Author(s) -
S. V. Storozhev,
V. I. Storozhev,
В. Е. Болнокин,
Duong Minh Hai,
D. I. Mutin
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1399/4/044028
Subject(s) - orthotropic material , isotropy , curvature , fuzzy logic , composite number , mathematical analysis , viscoelasticity , structural engineering , vibration , acoustics , mathematics , materials science , geometry , computer science , finite element method , physics , engineering , algorithm , composite material , optics , artificial intelligence
Is developed a numerical-analytical fuzzy-sets methodic for a analysis of the uncertain endogenous parameters of the resonant frequencies in a theoretical model of vibration of thin orthotropic composite three-layer cylindrical panels with small curvature having of symmetrical structure with two external transversally-isotropic piezoelectric layers and with internal orthotropic layer from linearly viscoelastic composite material if available of scatter errors in values of their structural exogenous physical-mechanical and geometric parameters. The technique is based on the transition to fuzzy-interval arguments in the analytical representations for the studied resonant frequencies and in the application of the heuristic principle of generalization to obtain of estimates for the values of such resonant frequencies in the form of normal fuzzy sets. An example of the implementation of the technique under consideration is presented.