Analytical and experimental determination of the vibration and pressure radiation from a submerged, stiffened cylindrical shell with two end plates

1994 ◽  
Vol 95 (6) ◽  
pp. 3360-3368 ◽  
Author(s):  
A. Harari ◽  
B. E. Sandman ◽  
J. A. Zaldonis
Keyword(s):  
Cylindrical Shell ◽  
Experimental Determination ◽  
Stiffened Cylindrical Shell

Experimental Determination of SEA Parameters of Stiffened Cylindrical Shell Structure

2006 ◽  
Vol 3-4 ◽  
pp. 315-324
Author(s):  
P. Ramachandran ◽  
S. Narayanan
Keyword(s):  
Cylindrical Shell ◽  
Natural Frequencies ◽  
Prediction Method ◽  
Radiation Efficiency ◽  
Laser Vibrometer ◽  
Correction Procedure ◽  
Discrete Elements ◽  
Stiffened Cylindrical Shell ◽  
Modal Density

A method to predict the modal density and radiation efficiency of orthogonally stiffened cylindrical shell is presented in this paper. The modal density is derived using energy method from the undamped natural frequencies of stiffened shell by treating the stiffeners as discrete elements. The band averaged radiation efficiency is estimated by categorizing the structural modes into acoustically fast and acoustically slow modes. The predicted parameters are compared with experimental results using laser vibrometer measurements. Phase-roll off has been observed in laser vibrometer measurements for which a correction procedure is applied. This prediction method can be easily extended to shells with stiffeners having different size, orientation etc.

Experimental determination of a state equation for dissipative granular gases

1999 ◽  
Vol 96 (6) ◽  
pp. 1111-1116 ◽  
Author(s):  
E. Falcon ◽  
S. Fauve ◽  
C. Laroche
Keyword(s):  
Experimental Determination ◽  
State Equation ◽  
Granular Gases
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