scholarly journals Vibrations of an elastic orthotropic unmoment open cylindrical shell with variable curvature and free end, when other edges are rigid–clamped.

2011 ◽  
Vol 64 (1) ◽  
pp. 37-49
Author(s):  
G.R. Ghulghazaryan ◽  
A.A. Khachanyan
Keyword(s):  
Cylindrical Shell ◽  
Open Cylindrical Shell ◽  
Variable Curvature

Analysis on the Aeroelastic Stability of Open Cylindrical Shells in Subsonic Airflow Using the Theoretical and Two-way CFD/CSD Coupled Methods

2019 ◽  
Vol 24 (3) ◽  
pp. 408-417 ◽  
Author(s):  
Yu-Yang Chai ◽  
Feng-Ming Li ◽  
Zhi-Guang Song
Keyword(s):  
Cylindrical Shell ◽  
Time Domain ◽  
Linear Potential ◽  
Aeroelastic Stability ◽  
Aeroelastic System ◽  
Open Cylindrical Shell ◽  
Aerodynamic Pressure ◽  
Finite Element Software ◽  
Critical Instability ◽  
The Time Domain

The aeroelastic stability of an open cylindrical shell in subsonic airflow is analyzed. The equation of motion of the open cylindrical shell whose one surface is subjected to the subsonic airflow is established based on the Donnell shell theory and transformed into ordinary differential equations using Galerkin’s method. The linear potential flow theory is applied to derive the aerodynamic pressure. The natural frequencies of the aeroelastic system are obtained, from which the flow velocity for the open cylindrical shell under instability can be calculated. The effects of the material and geometric parameters on the critical instability velocity are discussed. Furthermore, the open cylindrical shell is modelled using the finite element software ANSYS. The time domain responses of the structure in subsonic airflow are calculated using the two-way CFD/CSD (computational fluid-structure dynamics) coupled method. From the results, it can be seen that with the increase of the thickness and elastic modulus of the shell, the critical instability velocity increases also. The open cylindrical shell with a smaller radius shows better aeroelastic properties than that with a larger radius. The time domain responses obtained by the CFD/CSD method are compared with those calculated by the theoretical method, and the results of these two methods have a good agreement with each othe

Pinching an open cylindrical shell: Extended deformation and its persistence

2018 ◽  
Vol 123 (1) ◽  
pp. 14001 ◽  
Author(s):  
Daichi Matsumoto ◽  
Tomohiko G. Sano ◽  
Hirofumi Wada
Keyword(s):  
Cylindrical Shell ◽  
Open Cylindrical Shell

Elasto-plastic state of curve beam system subjected to complex loading

1996 ◽  
Vol 18 (4) ◽  
pp. 14-22
Author(s):  
Vu Khac Bay
Keyword(s):  
Cylindrical Shell ◽  
Solution Method ◽  
Complex Loading ◽  
Numerical Results ◽  
Elastic Solution ◽  
Plastic State ◽  
Curve Beam ◽  
Elastic State ◽  
Elastic Plastic ◽  
Beam System

Investigation of the elastic state of curve beam system had been considered in [3]. In this paper the elastic-plastic state of curve beam system in the form of cylindrical shell is analyzed by the elastic solution method. Numerical results of the problem and conclusion are given.

Dynamic stability of a free-free cylindrical shell under a follower force

AIAA Journal ◽  
2000 ◽  
Vol 38 ◽  
pp. 1070-1077
Author(s):  
Si-Hyoung Park ◽  
Ji-Hwan Kim
Keyword(s):  
Cylindrical Shell ◽  
Dynamic Stability ◽  
Follower Force
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