Development of Design Formula for Predicting Post-Buckling Behaviour and Ultimate Strength of Cylindrical Shell

2017 ◽  
Vol 23 (3) ◽  
pp. 313-319
Author(s):  
Jung-Ho Lee ◽  
◽  
Young-Cheol Oh ◽  
Kwang-Cheol Seo
Keyword(s):  
Cylindrical Shell ◽  
Ultimate Strength ◽  
Design Formula ◽  
Post Buckling

scholarly journals Experimental Study and Development of Design Formula for Estimating the Ultimate Strength of Curved Plates

2021 ◽  
Vol 11 (5) ◽  
pp. 2379
Author(s):  
Jeong-Hyeon Kim ◽  
Doo-Hwan Park ◽  
Seul-Kee Kim ◽  
Myung-Sung Kim ◽  
Jae-Myung Lee
Keyword(s):  
Aspect Ratio ◽  
Ultimate Strength ◽  
Large Deflection ◽  
Slenderness Ratio ◽  
Compressive Load ◽  
Element Analysis ◽  
Shipbuilding Industry ◽  
Design Formula ◽  
Deflection Analysis ◽  
Collapse Behavior

The curved plate has been extensively used as a structural member in many industrial fields, especially the shipbuilding industry. The present study investigated the ultimate strength and collapse behavior of the simply supported curved plate under a longitudinal compressive load. To do this, experimental apparatuses for evaluating the buckling collapse test of the curved plates was developed. Then, a series of buckling collapse experiments was carried out by considering the flank angle, slenderness ratio, and aspect ratio of plates. To examine the fundamental buckling and collapse behavior of the curved plate, elastoplastic large deflection analysis was performed using the commercial finite element analysis program. On the basis of both the experimental and FE analysis, the effects of the flank angle, slenderness ratio, and aspect ratio on the characteristics of the buckling and collapse behavior of the curved plates are discussed. Finally, the empirical design formula for predicting the ultimate strength of curved plates was derived. The proposed empirical formula is a good indicator for estimating the behavior of the curved plate.

The Influence of Middle Frames on the Ultimate Strength of Pressure Cylinder Shell

2009 ◽  
Author(s):  
Lin Wang ◽  
Feng Li
Keyword(s):  
Cylindrical Shell ◽  
Ultimate Strength ◽  
Pressure Cylinder ◽  
The Relationship

The influence of middle frames on the ultimate strength of pressure cylindrical shell is studied in this paper, the relationship between the critical stiffness of middle frames and the value of α is discussed, and the criterion of the necessity of adding middle frames on the issue of elastoplastic stabilities is specified.

STOCHASTIC THERMAL POST-BUCKLING RESPONSE OF LAMINATED COMPOSITE CYLINDRICAL SHELL PANEL WITH SYSTEM RANDOMNESS

2012 ◽  
Vol 04 (01) ◽  
pp. 1250009 ◽  
Author(s):  
ACHCHHE LAL ◽  
B. N. SINGH ◽  
SUSHIL KALE
Keyword(s):  
Cylindrical Shell ◽  
Order Statistics ◽  
Material Properties ◽  
Laminated Composite ◽  
Composite Cylindrical Shell ◽  
Random System ◽  
Second Order Statistics ◽  
Post Buckling ◽  
Shell Panel ◽  
System Properties

The effect of random system properties on thermal post-buckling temperature of laminated composite cylindrical shell panel with temperature independent (TID) and dependent (TD) material properties subjected to uniform temperature distribution is examined in this study. System properties such as material properties, thermal expansion coefficients and lamina plate thickness are modeled as independent basic random variables. The basic formulation is based on higher-order shear deformation (HSDT) theory with von-Karman nonlinearity using modified C0 continuty. A direct iterative-based C0 nonlinear finite element method (FEM) combined with Taylor series-based mean-centered first-order perturbation technique (FOPT) developed by the authors for composite plate is extended for shell panel with reasonable accuracy to compute second-order statistics of post-buckling temperature of cylindrical shell panel. Typical numerical results for second order statistics (mean and coefficient of variance) of thermal post-buckling temperature of laminated cylindrical shell panel are obtained through numerical examples for various support conditions, amplitude ratios, shell thickness ratios, aspect ratios, lamination lay-up sequences, curvature to length ratios, types of material properties with the effect of random system parameters. The performance of outlined approach has been validated with those results available in the literatures and independent MCS.

The Chaotic Motion of an Axially Compressed Cylindrical Shell Subjected to Radial Disturbance

2010 ◽  
Vol 29-32 ◽  
pp. 454-459
Author(s):  
Tao Zhang ◽  
Shan Yuan Zhang
Keyword(s):  
Differential Equation ◽  
Cylindrical Shell ◽  
Phase Plane ◽  
Time History ◽  
Homoclinic Orbits ◽  
Threshold Condition ◽  
Hoop Strain ◽  
Smale Horseshoe ◽  
Nonlinear Dynamic Equation ◽  
Post Buckling

Using the logarithmic hoop strain，a nonlinear dynamic equation governing the axisymmetric radial motion of an axially compressed cylindrical shell subjected to radial disturbance is derived. By means of Bubnov-Galerkin approach the partial differential equation can be transformed into an ordinary differential equation containing second-order nonlinear term. The qualitative analysis indicates that the autonomous dynamic systems corresponding to two cases of pre-buckling and post-buckling has the form-same homoclinic orbits and two orbits locate different positions on the horizontal axis of phase plane. The threshold condition for the occurrence of Smale horseshoe-type chaos in disturbed system is obtained by Melnikov’s method. Finally, the bifurcation diagram, time-history curve, phase portrait and Poincare’s map are calculated.

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