Post-buckling and Large-deflection analysis of a sandwich FG plate with FG porous core using Carrera’s Unified Formulation

2021 ◽  
pp. 114189
Author(s):  
K. Foroutan ◽  
E. Carrera ◽  
A. Pagani ◽  
H. Ahmadi
Keyword(s):  
Large Deflection ◽  
Porous Core ◽  
Deflection Analysis ◽  
Post Buckling

Nonlinear Static and Dynamic Analysis of Space Frames with Semi-Rigid Connections

1993 ◽  
Vol 8 (4) ◽  
pp. 261-269 ◽  
Author(s):  
Siu Lai Chan
Keyword(s):  
Dynamic Analysis ◽  
Large Deflection ◽  
Numerical Procedure ◽  
Computational Effort ◽  
Joint Orientation ◽  
Static And Dynamic Analysis ◽  
Space Frames ◽  
Orientation Method ◽  
Deflection Analysis ◽  
Post Buckling

To obtain an accurate insight into the behaviour of frames, joint flexibility must be accounted for in an analysis since most connections are neither fully rigid nor frictionless pinned but semi-rigid. A robust numerical procedure for large deflection static and dynamic analysis of frames with semirigid connections is presented in this paper. The method is consistent in handling both the static and dynamic problems and its programming and computational effort is moderate when compared to the currently available techniques for large deflection analysis such as the joint orientation method. The pre- and post- buckling static load versus deflection paths for flexibly jointed space frames are traced. The behaviour of some commonly studied problems is re-analysed statically and dynamically using the semi-rigid joint assumption in order to demonstrate the importance of considering connection flexibility in a nonlinear analysis.

A Method for Analyzing Elastic Large Deflection Behavior of Perfect and Imperfect Plates With Partially Rotation-Restrained Edges

2011 ◽  
Vol 134 (2) ◽  
Author(s):  
Jeom Kee Paik ◽  
Do Kyun Kim ◽  
Hoseong Lee ◽  
Yong Lae Shim
Keyword(s):  
Large Deflection ◽  
Biaxial Loading ◽  
Torsional Rigidity ◽  
Nonlinear Behavior ◽  
Edge Condition ◽  
Biaxial Compression ◽  
Buckling Behavior ◽  
Deflection Analysis ◽  
Post Buckling ◽  
Loading Ratio

The edge condition of the plating in a continuous stiffened-plate structure is neither simply supported nor clamped because the torsional rigidity of the support members at the plate edges is neither zero nor infinite. In a robust ship structural design, it is necessary to accurately take into account the effect of the edge condition in analyses of plate behavior in terms of buckling and post-buckling behavior. The aim of this study is to develop a new method for analyzing the geometric nonlinear behavior (i.e., elastic large deflection or post-buckling behavior) of plates with partially rotation-restrained edges in association with the torsional rigidity of the support members and under biaxial compression. An analytical method was developed to solve this problem using the nonlinear governing differential equations of plates. The validity of the developed method was confirmed by comparison with nonlinear finite element method solutions with varying values for the torsional rigidity of the support members, plate aspect ratio, and biaxial loading ratio. The developed method was found to give reasonably accurate results for practical design purpose in terms of the large deflection analysis of plates with partially rotation-restrained edges, and it will be useful for the robust design of ship structures in association with buckling and ultimate strength of plates surrounded by support members.

Research on the post-buckling strength of screw composite thin plate with large deflection

Structures ◽  
2021 ◽  
Vol 32 ◽  
pp. 204-215
Author(s):  
Lei Zhang ◽  
Tianhua Zhou ◽  
Yanchun Li ◽  
Liurui Sang
Keyword(s):  
Thin Plate ◽  
Large Deflection ◽  
Buckling Strength ◽  
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.

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