scholarly journals DYNAMICS OF FIXED OFFSHORE CYLINDRICAL SHELL STRUCTURES : Part II Response Analysis to Random Ocean Waves

1980 ◽  
Vol 297 (0) ◽  
pp. 139-150
Author(s):  
TAKUJI HAMAMOTO ◽  
YASUO TANAKA
Keyword(s):  
Cylindrical Shell ◽  
Ocean Waves ◽  
Shell Structures ◽  
Response Analysis ◽  
Random Ocean Waves

Drastic tailorable thermal expansion chiral planar and cylindrical shell structures explored with finite element simulation

2019 ◽  
Vol 210 ◽  
pp. 327-338 ◽  
Author(s):  
Huabin Yu ◽  
Wenwang Wu ◽  
Jianxun Zhang ◽  
Jikun Chen ◽  
Haitao Liao ◽  
...  
Keyword(s):  
Finite Element ◽  
Cylindrical Shell ◽  
Thermal Expansion ◽  
Finite Element Simulation ◽  
Shell Structures ◽  
Element Simulation

Transient Response Analysis of Geometrically Nonlinear Laminated Composite Shell Structures

1996 ◽  
Author(s):  
Cho W. S. To ◽  
Bin Wang
Keyword(s):  
Finite Element ◽  
Degrees Of Freedom ◽  
Composite Shell ◽  
Laminated Composite ◽  
Shell Structures ◽  
Response Analysis ◽  
Hybrid Strain ◽  
Drilling Degree Of Freedom ◽  
Shell Finite Element ◽  
Shear Deformable

Abstract The investigation reported in this paper is concerned with the prediction of geometrically large nonlinear responses of laminated composite shell structures under transient excitations by employing the hybrid strain based flat triangular laminated composite shell finite element presented here. Large deformation of finite strain and finite rotation are considered. The finite element has eighteen degrees-of-freedom which encompass the important drilling degree-of-freedom at every node. It is hinged on the first order shear deformable lamination theory. Various laminated composite shell structures have been studied and for brevity only two are presented here. It is concluded that the element proposed is very accurate and efficient. Shear locking has not appeared in the results obtained thus far. There is no zero energy mode detected in the problems studied. For nonlinear dynamic response computations, the full structural system has to be considered if accurate results are required.

The effects of ribs in axial compression of CFRP anisogrid cylindrical shell structures

2019 ◽  
Author(s):  
J. Anish Jafrin Thilak ◽  
P. Suresh ◽  
P. Balamurugan
Keyword(s):  
Cylindrical Shell ◽  
Axial Compression ◽  
Shell Structures

Experimental Study on Deformation and Shock Damage of Cylindrical Shell Structures Subjected to Underwater Explosion

2010 ◽  
Vol 224 (11) ◽  
pp. 2505-2514 ◽  
Author(s):  
L-J Li ◽  
W-K Jiang ◽  
Y-H Ai
Keyword(s):  
Cylindrical Shell ◽  
Underwater Explosion ◽  
Experimental Results ◽  
Dynamic Responses ◽  
Shell Structures ◽  
Security Evaluation ◽  
Wave Loading ◽  
Shell Models ◽  
Edge Cracks ◽  
Damage Condition

The security evaluation of some structures shocked by an underwater explosion (UNDEX) frequently plays a key role in some cases, and it is necessary to accurately predict the damage condition of the structure in an UNDEX environment. This study investigates the dynamic linear and non-linear responses and shock damages of two kinds of submerged cylindrical shell models exposed to underwater spherical trinitrotoluene (TNT) charge explosions in a circular lake. Two endplates and a middle plate are mounted on the cylindrical shells to provide support and to create two enclosed spaces. The two kinds of cylindrical shell models with the same geometry characteristics are unfilled and main hull sand-filled. Fifteen different tests are carried out by changing the TNT explosive weights of 1 and 2 kg, standoff distances ranging from 3 to 0.3 m, and two explosion positions. Measured experimental results are compared with each other, and some transformed data are obtained. A detailed discussion on experimental results shows that the dynamic responses and damage modes are much different, and the main hull sand-filled cylindrical shell is more difficult to be damaged by the shock wave loading than the unfilled model. Edge cracks are mainly observed at the instrument hull of the main hull sand-filled model, but surface tearing and cracks are observed on both the main hull and the instrumental hull of the unfilled model, respectively.

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