A novel reduced‐order modeling method for nonlinear buckling analysis and optimization of geometrically imperfect cylinders

2020 ◽  
Author(s):  
Ke Liang ◽  
Peng Hao ◽  
Bo Wang ◽  
Qin Sun
Keyword(s):  
Reduced Order Modeling ◽  
Buckling Analysis ◽  
Modeling Method ◽  
Nonlinear Buckling ◽  
Reduced Order ◽  
Nonlinear Buckling Analysis

Reduced Order Models for Static and Dynamic Analysis of Composite Panels Based on a Perturbation Approach

2016 ◽  
Vol 828 ◽  
pp. 199-212
Author(s):  
Eelco Jansen ◽  
Tanvir Rahman ◽  
Raimund Rolfes
Keyword(s):  
Finite Element ◽  
Buckling Analysis ◽  
Current Status ◽  
Response Analysis ◽  
Perturbation Approach ◽  
Nonlinear Buckling ◽  
Reduced Order ◽  
Static And Dynamic Analysis ◽  
Reduced Order Modelling ◽  
Nonlinear Buckling Analysis

An overview of a specific reduced order modelling technique for Finite Element nonlinear buckling analysis of structures under static and dynamic loading is presented. The reduction method applied makes use of an available, well-established analytical perturbation procedure for static buckling and dynamic buckling analysis. This procedure has in the past years been used as the foundation for the development and implementation of a Finite Element framework for reduced order nonlinear buckling analysis. These achievements are reported, including a concise description of the underlying theory and certain characteristic examples. A basic example of a composite plate and other examples related to aircraft applications demonstrate the capabilities of this reduced order modelling framework for nonlinear buckling and dynamic response analysis and illustrate the current status of its development.

Linear Buckling Analysis Considering No-compression Property of Metal Grid Shells Stiffened by Tension Braces

2021 ◽  
Vol 62 (3) ◽  
pp. 195-205
Author(s):  
Kenji Yamamoto ◽  
Hayato Utebi
Keyword(s):  
Geometrical Nonlinearity ◽  
Buckling Analysis ◽  
Nonlinear Buckling ◽  
Compression Property ◽  
Buckling Behavior ◽  
Metal Grid ◽  
Linear Buckling ◽  
Nonlinear Buckling Analysis ◽  
Linear Buckling Analysis ◽  
Lattice Shells

In order to analyze the buckling behavior of lattice shells stiffened by cables or slender braces without pre-tension, it is necessary to consider the no-compression property of braces. This paper proposes an innovative method of linear buckling analysis that considers the no-compression property of braces. Moreover, in order to examine the proposed method's validity, its results are compared with the results from a nonlinear buckling analysis with geometrical nonlinearity and material nonlinearity to express the no-compression property of braces. The results show that the proposed method can well-predict the buckling behaviors of lattice shells stiffened by tension braces.

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