Issue 49

S.A. Bochkarev et alii, Frattura ed Integrità Strutturale, 49 (2019) 814-830; DOI: 10.3221/IGF-ESIS.49.15 827 (a) (b) Figure 6 : Variation in the lowest natural frequencies  (Hz) with the level of the fluid in the annular gap between the shells  at different values of the eccentricity  and various electrical boundary conditions (shaded symbols — short-circuit mode, unshaded symbols — open-circuit mode) for clamped-clamped (a) and cantilevered (b) shells: k = 1/10. (a) (b) (c) Figure 7 : The lowest vibration mode of the electroelastic shell interacting with a fluid in the transverse  ( 2) x L and longitudinal  ( 0) y sections at different levels of the fluid in the annular gap  (CC, open-circuit mode,   1 10, 0) k  : (a)  1.0;  (b)  0.5;  (с)  0.25.  0.0 0.2 0.4 0.6 0.8  0 10 20 30 40  ●, ○  = 0.00 ▲ , Δ  = 0.50 ■ , □  = 0.95 0.0 0.2 0.4 0.6 0.8  0 28 56 84 112  ●, ○  = 0.00 ▲ , Δ  = 0.50 ■ , □  = 0.95