Analysis of randomly vibrating structures under hybrid uncertainty

2009 ◽  
Vol 31 (11) ◽  
pp. 2677-2686 ◽  
Author(s):  
Giuseppe Carlo Marano ◽  
Emiliano Morrone ◽  
Giuseppe Quaranta
Keyword(s):  
Vibrating Structures ◽  
Hybrid Uncertainty

scholarly journals Statistical analysis of Stromboli VLP tremor in the band [0.1–0.5] Hz: some consequences for vibrating structures

2006 ◽  
Vol 13 (4) ◽  
pp. 393-400 ◽  
Author(s):  
E. De Lauro ◽  
S. De Martino ◽  
M. Falanga ◽  
M. Palo
Keyword(s):  
Frequency Band ◽  
High Frequency ◽  
Noise Source ◽  
Volcanic Tremor ◽  
Large Data ◽  
Musical Instruments ◽  
Data Set ◽  
Long Period ◽  
Vibrating Structures ◽  
Analyze Time Series

Abstract. We analyze time series of Strombolian volcanic tremor, focusing our attention on the frequency band [0.1–0.5] Hz (very long period (VLP) tremor). Although this frequency band is largely affected by noise, we evidence two significant components by using Independent Component Analysis with the frequencies, respectively, of ~0.2 and ~0.4 Hz. We show that these components display wavefield features similar to those of the high frequency Strombolian signals (>0.5 Hz). In fact, they are radially polarised and located within the crater area. This characterization is lost when an enhancement of energy appears. In this case, the presence of microseismic noise becomes relevant. Investigating the entire large data set available, we determine how microseismic noise influences the signals. We ascribe the microseismic noise source to Scirocco wind. Moreover, our analysis allows one to evidence that the Strombolian conduit vibrates like the asymmetric cavity associated with musical instruments generating self-sustained tones.

Digital Tuning as an Exploratory Tool in the Modal Analysis of Randomly-Loaded Vibrating Structures

AIAA Journal ◽  
1973 ◽  
Vol 11 (11) ◽  
pp. 1539-1544
Author(s):  
D. R. CRUISE ◽  
R. G. CHRISTIANSEN
Keyword(s):  
Modal Analysis ◽  
Vibrating Structures ◽  
Digital Tuning

scholarly journals Total Acoustic Power Radiated by Planar Vibrating Structures.

1993 ◽  
Vol 59 (566) ◽  
pp. 3078-3085 ◽  
Author(s):  
Nobuo Tanaka ◽  
Scott Snyder D. ◽  
Yoshihiro Kikushima ◽  
Masaharu Kuroda
Keyword(s):  
Acoustic Power ◽  
Vibrating Structures

The Application of Large-Scale State Estimation to Vibrating Structures *

1982 ◽  
Vol 15 (4) ◽  
pp. 1289-1294
Author(s):  
D.L. Lager ◽  
S.G. Azevedo ◽  
J.V. Candy
Keyword(s):  
State Estimation ◽  
Large Scale ◽  
Vibrating Structures
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