Identification of Impact Loading Characteristics of Composite Laminated Cylindrical Shells using Neural Networks

2009 ◽  
Author(s):  
Y.-S. Lee ◽  
C.-H. Ryu ◽  
C.-M. Myung
Keyword(s):  
Neural Networks ◽  
Impact Loading ◽  
Cylindrical Shells ◽  
Laminated Cylindrical Shells

Buckling of laminated cylindrical shells in terms of different theories and formulations

AIAA Journal ◽  
2001 ◽  
Vol 39 ◽  
pp. 2001-1773
Author(s):  
Izhak Sheinman ◽  
Yiska Goldfeld
Keyword(s):  
Cylindrical Shells ◽  
Laminated Cylindrical Shells

A local high-order deformable theory for thick laminated cylindrical shells

1994 ◽  
Vol 29 (1) ◽  
pp. 69-87 ◽  
Author(s):  
Chih-Ping Wu ◽  
Chi-Chuan Liu
Keyword(s):  
Cylindrical Shells ◽  
High Order ◽  
Laminated Cylindrical Shells

Vibration Analysis of Rotating Laminated Cylindrical Shells

AIAA Journal ◽  
2007 ◽  
Vol 45 (8) ◽  
pp. 2051-2061 ◽  
Author(s):  
Hsuan-Teh Hu ◽  
Kou-Long Wang
Keyword(s):  
Vibration Analysis ◽  
Cylindrical Shells ◽  
Laminated Cylindrical Shells

Acoustic Radiation From Thick Laminated Cylindrical Shells With Sparse Cross Stiffeners

2013 ◽  
Vol 135 (3) ◽  
Author(s):  
Xiongtao Cao ◽  
Chao Ma ◽  
Hongxing Hua
Keyword(s):  
Cylindrical Shell ◽  
Radial Displacement ◽  
Acoustic Radiation ◽  
Periodic Structures ◽  
Cylindrical Shells ◽  
Acoustic Power ◽  
Acoustic Energy ◽  
Parallel Plates ◽  
Wavenumber Domain ◽  
Laminated Cylindrical Shells

A general method for predicting acoustic radiation from multiple periodic structures is presented and a numerical solution is proposed to find the radial displacement of thick laminated cylindrical shells with sparse cross stiffeners in the wavenumber domain. Although this method aims at the sound radiation from a single stiffened cylindrical shell, it can be easily adapted to analyze the vibrational and sound characteristics of two concentric cylindrical shells or two parallel plates with complicated periodic stiffeners, such as submarine and ship hulls. The sparse cross stiffeners are composed of two sets of parallel rings and one set of longitudinal stringers. The acoustic power of large cylindrical shells above the ring frequency is derived in the wavenumber domain on the basis of the fact that sound power is focused on the acoustic ellipse. It transpires that a great many band gaps of wave propagation in the helical wave spectra of the radial displacement for stiffened cylindrical shells are generated by the rings and stringers. The acoustic power and input power of stiffened antisymmetric laminated cylindrical shells are computed and compared. The acoustic energy conversion efficiency of the cylindrical shells is less than 10%. The axial and circumferential point forces can also produce distinct acoustic power. The radial displacement patterns of the antisymmetric cylindrical shell with fluid loadings are illustrated in the space domain. This study would help to better understand the main mechanism of acoustic radiation from stiffened laminated composite shells, which has not been adequately addressed in its companion paper (Cao et al., 2012, “Acoustic Radiation From Shear Deformable Stiffened Laminated Cylindrical Shells,” J. Sound Vib., 331(3), pp. 651-670).

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