NON-LINEAR BUCKLING BEHAVIOR AND ELASTIC BUCKLING CRITERION OF SINGLE LAYER LATTICED CYLINDRICAL SHELL DESIGNED WITH DEAD LOAD

Abstract In this study, the effect of change of notch type on non-linear buckling behavior in composite plates was investigated experimentally and numerically. The composite plate is produced by applying the vacuum infusion method using carbon and aramid hybrid woven fabric and epoxy. Primarily, in the composite plates, a circular hole in the middle, a U single edge notch and semicircle double edge notches are formed. The specimens were subjected to buckling tests, being placed on their two edges, while the others were free. Afterwards, the load displacement graphs of the plates under pressure load were obtained experimentally for the behavior before and after buckling. In the numerical study, non-linear buckling analysis was performed using the finite element method. As a result, experimental and numerical buckling behaviors were obtained in accordance with each other. Since the net cross section bearing the pressure load is equal for all notch types, an effective difference between the maximum damage loads has not been achieved. So, the variation of notch type does not change the load displacement behavior characteristics of the plates after buckling. However, due to the unsymmetrical geometry in U notched plates, an uneven change in horizontal displacements along the width of the plate was achieved. The maximum stress concentration formed around the notch increased after buckling with the increase of displacement in vertical direction.

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Non-linear buckling and postbuckling of shear deformable anisotropic laminated cylindrical shell subjected to varying external pressure loads

Composite Structures ◽

10.1016/j.compstruct.2009.08.048 ◽

2010 ◽

Vol 92 (2) ◽

pp. 553-567 ◽

Cited By ~ 36

Author(s):

Zhi-Min Li ◽

Zhong-Qin Lin

Keyword(s):

Cylindrical Shell ◽

External Pressure ◽

Linear Buckling ◽

Non Linear ◽

Shear Deformable ◽

Laminated Cylindrical Shell

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Buckling Load of Elliptic Paraboloidal Single Layer Reticulated Roofs under Uniform Load

International Journal of Space Structures ◽

10.1260/0266351054764227 ◽

2005 ◽

Vol 20 (2) ◽

pp. 91-106 ◽

Cited By ~ 6

Author(s):

Shiro Kato ◽

Yoshiro Yamauchi ◽

Takashi Ueki

Keyword(s):

Approximate Formula ◽

Slenderness Ratio ◽

Single Layer ◽

Elastic Buckling ◽

Uniform Load ◽

Column Buckling ◽

Buckling Loads ◽

Buckling Strength ◽

Practical Design ◽

Linear Buckling

The present paper discusses buckling strength of elliptic paraboloidal reticular roofs under a uniform load on a rectangular plan. The roofs are assumed as three way single layers with a pin-support at all peripheries on a rectangular plan. The buckling analyses are performed for linear buckling, elastic buckling and elastic-plastic buckling. The results of buckling loads are formulated based on two procedures for practical design use. One is an explicit but approximate formula for elastic buckling loads using a knock down factor and the other one is an implicit expression for buckling loads interpreted into a column buckling strength in terms of generalized slenderness ratio.

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