Buckling analysis of restrained orthotropic plates under combined in-plane shear and axial loads and its application to web local buckling

2014 ◽  
Vol 111 ◽  
pp. 540-552 ◽  
Author(s):  
Qinghui Liu ◽  
Pizhong Qiao ◽  
Xingwen Guo
Keyword(s):  
Local Buckling ◽  
Buckling Analysis ◽  
Axial Loads ◽  
Orthotropic Plates ◽  
Plane Shear

Local Buckling Analysis of Restrained Orthotropic Plates under Generic In-Plane Loading

2013 ◽  
Vol 139 (8) ◽  
pp. 936-951 ◽  
Author(s):  
Pizhong Qiao ◽  
Fangliang Chen ◽  
Jifeng Xu ◽  
Zizi Lu
Keyword(s):  
Local Buckling ◽  
Buckling Analysis ◽  
Orthotropic Plates

EXPLICIT LOCAL BUCKLING ANALYSIS OF ROTATIONALLY- AND VERTICALLY-RESTRAINED ORTHOTROPIC PLATES UNDER UNIAXIAL COMPRESSION

2012 ◽  
Vol 12 (05) ◽  
pp. 1250038 ◽  
Author(s):  
XUPING HUO ◽  
PIZHONG QIAO
Keyword(s):  
Boundary Conditions ◽  
Uniaxial Compression ◽  
Numerical Solutions ◽  
Local Buckling ◽  
Potential Energy Function ◽  
Buckling Analysis ◽  
Rectangular Plates ◽  
Orthotropic Plates ◽  
Uniform Compression ◽  
Laminated Structures

In this paper, explicit local buckling analysis of orthotropic plates subjected to uniaxial compression with two loaded edges simply-supported and two unloaded edges supported by combined vertical and rotational restraining springs is presented. Based on the total potential energy function, the eigenvalue problem is formulated by treating the buckled shape functions as the admissible functions that satisfy the boundary conditions of the rectangular plates. Closed-form and approximate local buckling solutions of the combined rotationally- and vertically-restrained orthotropic plates, as well as explicit formulas for the critical buckling load and critical aspect ratio under the uniform compression, are obtained. By adjusting the stiffness of the rotational and vertical restraining springs, explicit local buckling solutions are established for eight simple cases of boundary conditions. To verify the explicit solutions, numerical analyses of orthotropic plates using the exact transcendental and finite element methods are conducted, for which reasonable agreement has been obtained between the explicit and numerical solutions, particularly for the simplified cases. The explicit solution obtained in this study can be used to facilitate the buckling analysis of composite laminated structures with different boundary conditions or joint connections as parts of stiffened and thin-walled structures by treating them as discrete plates with restrained boundary conditions.

Local Buckling Analysis of Longitudinal Reinforcing Bars

2012 ◽  
Vol 138 (1) ◽  
pp. 62-71 ◽  
Author(s):  
Christopher R. Urmson ◽  
John B. Mander
Keyword(s):  
Local Buckling ◽  
Buckling Analysis ◽  
Reinforcing Bars

Buckling Analysis of Wind Power Tower Considering the Effect of Nonlinearity

2012 ◽  
Vol 256-259 ◽  
pp. 792-795
Author(s):  
Bo Song ◽  
Shuai Huang ◽  
Wen Shan He ◽  
Wei Wei
Keyword(s):  
Wind Power ◽  
Geometric Nonlinearity ◽  
Local Buckling ◽  
Element Model ◽  
Buckling Analysis ◽  
Buckling Load ◽  
Nonlinear Buckling ◽  
Buckling Behavior ◽  
Geometry Nonlinearity ◽  
Material And Geometric Nonlinearity

Based on the 3D finite element model of the wind power tower, buckling behavior of the wind power tower in different wind directions is analyzed, and the effect considering geometry nonlinearity and considering the material and geometry nonlinearity to the buckling analysis is studied. The results show when the ratio of the radius of the tower drum and the length of the element is 18.75, the calculated precision can reach 95%. Local buckling of the wind power tower first appears, and buckling load and displacement considering the material and geometric nonlinearity reduce 52% and 58% compared with that only considering geometry nonlinearity. The linear and nonlinear buckling load of the wind power tower which is 90° sidewind are 1.8 and 1.2 times than those facing the wind direction.

Nonlinear Buckling Analysis of Cylindrical Shell With Normal Nozzle Subjected to Axial Loads

2017 ◽  
Author(s):  
Qianyu Shi ◽  
Zhijian Wang ◽  
Hui Tang
Keyword(s):  
Cylindrical Shell ◽  
Industrial Development ◽  
Large Scale ◽  
Pressure Vessels ◽  
Buckling Analysis ◽  
Fe Model ◽  
Axial Loads ◽  
Nonlinear Buckling ◽  
Buckling Failure ◽  
Nonlinear Buckling Analysis

Design of Large-scale and light-weight pressure vessels is an inexorable trend of industrial development. These large thin-walled vessels are prone to buckling failure when subjected to compression loads and other destabilizing loads. Thus, buckling analysis is a primary and even the most important part of design for these pressure vessels. Local buckling failure will probably occur when cylindrical shells with nozzle subjected to axial loads. In this paper, a FE model of cylindrical shell with a normal nozzle is established in ANSYS Workbench. The bifurcation buckling analysis is performed by using an elastic-plastic stress analysis with the effect of nonlinear geometry, and a collapse analysis is performed with an initial imperfection. The axial buckling loads are obtained by these two types of method. Some issues about nonlinear buckling analysis are discussed through this study case.

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