Partially Double-Layered Dome Structure Linear and Nonlinear Buckling Analysis

2010 ◽  
Vol 163-167 ◽  
pp. 387-391
Author(s):  
Jian Bing Lv ◽  
He Lin Fu ◽  
Yang Li ◽  
Zhe Liu
Keyword(s):  
Stability Analysis ◽  
Space Structure ◽  
Buckling Analysis ◽  
Structure Stability ◽  
Analysis Method ◽  
Nonlinear Buckling ◽  
Nonlinear Load ◽  
New Type ◽  
Dome Structure ◽  
Linear And Nonlinear

Space steel structure stability has been a focused problem in the engineering field, in the past the study mainly concentrated on the single layer dome structure stability and elastic stability analysis, but with the structure shape complex, new type structure emerges continually, it needs more accurate stability analysis method. In this paper the linear and nonlinear buckling theory and analysis method are introduced firstly, and then a new type steel space structure with partially double layer dome structure is chosen as the computational model. The structure self vibration mode, linear buckling analysis and nonlinear buckling process and buckling characteristics are studied by the FEM commercial code ANSYS; the nonlinear load-deflection curves at the different points are gotten and some conclusions about this kind of structure are drawn.

Structure Design of Suspend-Dome Structure of Pingshan Basketball Gymnasium for Universiade 2011 Shenzhen

2011 ◽  
Vol 368-373 ◽  
pp. 114-119 ◽  
Author(s):  
Bing Wu ◽  
Mei Li Meng ◽  
Xue Yi Fu ◽  
Can Sun ◽  
Ye Wen Feng
Keyword(s):  
Design Criterion ◽  
Structure Design ◽  
Buckling Analysis ◽  
Nonlinear Buckling ◽  
Construction Scheme ◽  
Key Issues ◽  
Dome Structure ◽  
Linear And Nonlinear ◽  
Nonlinear Buckling Analysis ◽  
Scheme Analysis

The suspend-dome structure is designed for the steel roof of Pingshan Basketball Gymnasium for Universidad 2011 Shenzhen, the overlapping diameter is 72m, supporting by 24 RC columns evenly distributed along the periphery. The following analyses were carried out: the design criterion of the suspend-dome; the linear and nonlinear buckling analysis; the detail analysis of the complex key joint, the arrangement analysis of the suspending chord and the prestressed cable; the construction stage modeling and construction scheme analysis. The key issues and relevant construction method were summarized, which could be used as reference in the similar design.

Shape Determination of a New Double Inner and Outer Latticed Shell String Structure

2014 ◽  
Vol 501-504 ◽  
pp. 744-747
Author(s):  
Guang Ying Ma ◽  
Yun Long Yao ◽  
Yu Meng Dong
Keyword(s):  
Space Structure ◽  
Local Analysis ◽  
Analysis Method ◽  
Structural System ◽  
Roof Structure ◽  
String Structure ◽  
Roofing Material ◽  
New Type ◽  
Shape Determination

Double inner and outer latticed shell string structure is a new type of space structure. The new structural system is to reduce the space occupied by roof structure and could be laid by the rigid roofing material conveniently. Based on the local analysis method and the whole system balance, a numerical algorithm was introduced and some suggestions for improvement were put forward. An example was investigated and the results confirmed the feasibility of the proposed method.

Stability Analysis of the Radiant Cable Suspendome

2012 ◽  
Vol 226-228 ◽  
pp. 1185-1189
Author(s):  
Jian Kang ◽  
Xiang Yu Liu
Keyword(s):  
Stability Analysis ◽  
Single Layer ◽  
Hybrid Structure ◽  
Buckling Analysis ◽  
Nonlinear Buckling ◽  
Geometrical Imperfection ◽  
String Structure ◽  
The Stability ◽  
Nonlinear Buckling Analysis ◽  
Lattice Shell

Radiant cable suspendome based on single-layer lattice shell is proposed in this paper whose cable-strut system is like that of Radiant Beam String Structure, the purpose of this paper is to do stability analysis of the structure.The linear buckling analysis of the hybrid structure and the single-layer lattice shell who has the same geometry parameters is carried out, we can preliminarily understand the stability of the hybrid structure. At the same time, nonlinear buckling analysis is carried out to study the stability of the hybrid structure under different rise-span ratios, different prestress level and half-span load. The results show that the introduction of prestressed cables greatly improve the structure's stability and reduce the structure sensitivity to original geometrical imperfection.

Nonlinear Analysis and Construction Method of a Silo Dome with Grain

2014 ◽  
Vol 501-504 ◽  
pp. 2213-2216
Author(s):  
Jian Wan
Keyword(s):  
Nonlinear Analysis ◽  
Buckling Analysis ◽  
Nonlinear Buckling ◽  
Roof Structure ◽  
Shell Design ◽  
Linear Buckling ◽  
New Type ◽  
Buckling Failure ◽  
Nonlinear Buckling Analysis ◽  
Linear Buckling Analysis

Combined with the project which a grain silo need be transformed, a new type of silo is put forward. The silo system consists of supporting columns, the silo body and latticed shell roof structure. In view of the force is different between silo shell roof and conventional roof, and silo shell roof prones to buckling failure. The linear and nonlinear buckling analysis was carried out for latticed shell with a diameter of 20m, the results show that the buckling loads obtained by linear buckling analysis is greater than that obtained by nonlinear buckling analysis, and nonlinear analysis is more secure for structures. Through the comparison the rationality and stability of reticulated shell design are verified, finally construction measures of this system are given, and these can provide references for design and construction of similar engineering.

scholarly journals Structure and stability of hollow vortex equilibria

2011 ◽  
Vol 691 ◽  
pp. 178-200 ◽  
Author(s):  
Stefan G. Llewellyn Smith ◽  
Darren G. Crowdy
Keyword(s):  
Stability Analysis ◽  
Linear Stability ◽  
Linear Stability Analysis ◽  
Analytical Form ◽  
Two Dimensional ◽  
Equilibrium Solutions ◽  
Shape Distortion ◽  
New Type ◽  
Linear And Nonlinear ◽  
Hollow Vortex

AbstractThis paper considers the structure and linear stability of two-dimensional hollow vortex equilibria. Equilibrium solutions for a single hollow vortex in linear and nonlinear straining flows are derived in analytical form using free streamline theory. The linear stability properties of this solution class are then determined numerically and a new type of resonance-induced displacement instability is identified. It is found to be a consequence of the fact that one of the shape distortion modes of a circular hollow vortex has the same frequency as one of the modes corresponding to displacement of the vortex centroid. The instability is observed in the case of an isolated hollow vortex situated in straining flow of order three. We also revisit the hollow vortex row solution due to Baker, Saffman & Sheffield (J. Fluid Mech., vol. 74, 1976, p. 1469), and since it is currently lacking in the literature, we present a full linear stability analysis of this solution using Floquet analysis.

Applicability Study on Method of Stability Analysis for Suspendome Structures

2010 ◽  
Vol 163-167 ◽  
pp. 1916-1923
Author(s):  
Kai Rong Shi ◽  
Zheng Rong Jiang ◽  
Shi Tong Wang
Keyword(s):  
Stability Analysis ◽  
Steel Structures ◽  
Hybrid Structure ◽  
Analysis Method ◽  
Buckling Mode ◽  
Stability Bearing Capacity ◽  
Geometrical Imperfections ◽  
New Type ◽  
Analytical Result ◽  
The Stability

Consistent Mode Imperfections Method based on eigenvalue buckling mode is widely adopted in the stability analysis for the spatial steel structures with initial geometrical imperfections, i.e. latticed shells, thin shells, etc. Taking the new type hybrid structure of suspendome as the analytical object, the applicability of Consistent Mode Imperfections Method is discussed. The effects on structural stability are probed arisen by the factors such as different initial reference loads and different order eigenvalue buckling modes. It is indicated that this stability analysis method can be quite fit for the spatial structures such as latticed shells, while for suspendomes, the initial reference load has a distinct effect upon the analytical result obtained by the stability analysis method. Moreover, it is not always to dominate calculating result when selecting the first order eigenvalue buckling mode as the distributing pattern of initial geometrical imperfections. As a result, some measures should be taken to improve the accuracy in evaluating the stability bearing capacity of the structures with Consistent Mode Imperfections Method based on eigenvalue buckling mode.

scholarly journals Linear and nonlinear buckling analysis of a locally stretched plate

2016 ◽  
Vol 30 (8) ◽  
pp. 3607-3613 ◽  
Author(s):  
Madina Kilardj ◽  
Ghania Ikhenazen ◽  
Tanguy Messager ◽  
Toufik Kanit
Keyword(s):  
Buckling Analysis ◽  
Nonlinear Buckling ◽  
Linear And Nonlinear ◽  
Nonlinear Buckling Analysis

Stability Analysis of the Radiant Cable Suspendome

2014 ◽  
Vol 1065-1069 ◽  
pp. 1240-1244
Author(s):  
Zhen Hua Liu ◽  
Hong Zhu Shan ◽  
Xiang Yu Liu ◽  
Tao Wang
Keyword(s):  
Stability Analysis ◽  
Single Layer ◽  
Hybrid Structure ◽  
Buckling Analysis ◽  
Nonlinear Buckling ◽  
Geometrical Imperfection ◽  
String Structure ◽  
The Stability ◽  
Nonlinear Buckling Analysis ◽  
Lattice Shell

Radiant cable suspendome based on single-layer lattice shell is proposed in this paper whose cable-strut system is like that of Radiant Beam String Structure, the purpose of this paper is to do stability analysis of the structure.The linear buckling analysis of the hybrid structure and the single-layer lattice shell who has the same geometry parameters is carried out, we can preliminarily understand the stability of the hybrid structure. At the same time, nonlinear buckling analysis is carried out to study the stability of the hybrid structure under different rise-span ratios, different prestress level and half-span load. The results show that the introduction of prestressed cables greatly improve the structure's stability and reduce the structure sensitivity to original geometrical imperfection.

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