Tripping Analysis and Design Consideration of Permanent Means of Access Structure

2011 ◽  
Author(s):  
Ming Ma ◽  
Beom-Seon Jang ◽  
Owen F. Hughes
Keyword(s):  
Finite Element ◽  
Design Space Exploration ◽  
Solution Process ◽  
Local Buckling ◽  
Extensive Study ◽  
Buckling Analysis ◽  
Element Analysis ◽  
Analysis And Design ◽  
Linear Buckling ◽  
Linear Buckling Analysis

An efficient Rayleigh-Ritz approach is presented for analyzing the lateral-torsional buckling (“tripping”) behavior of permanent means of access (PMA) structures. Tripping failure is dangerous and often occurs when a stiffener has a tall web plate. For ordinary stiffeners of short web plates, tripping usually occurs after plate local buckling and often happens in plastic range. Since PMA structures have a wide platform for a regular walk-through inspection, they are vulnerable to elastic tripping failure and may take place prior to plate local buckling. Based on an extensive study of finite element linear buckling analysis, a strain distribution is assumed for PMA platforms. The total potential energy functional, with a parametric expression of different supporting members (flat bar, T-stiffener and angle stiffener), is formulated, and the critical tripping stress is obtained using eigenvalue approach. The method offers advantages over commonly used finite element analysis because it is mesh-free and requires only five degrees of freedom; therefore the solution process is rapid and suitable for design space exploration. The numerical results are in agreement with NX NASTRAN [1] linear buckling analysis. Design recommendations are proposed based on extensive parametric studies.

scholarly journals Prediction of Nominal Compressive Strength in Steel Piles Subject to Corrosion Losses: A Finite Element Approach

2020 ◽  
Vol 9 (1) ◽  
pp. 24-30
Author(s):  
Breanna Bailey ◽  
Sidiq A. Osomo
Keyword(s):  
Finite Element ◽  
Compressive Strength ◽  
Buckling Analysis ◽  
Cross Sectional ◽  
Steel Construction ◽  
Linear Buckling ◽  
Non Linear ◽  
Post Buckling ◽  
Element Approach ◽  
Linear Buckling Analysis

 This paper presents a method for predicting the nominal compressive strength of steel I-shaped piles subject to cross-sectional losses caused by corrosion.  The method requires a finite element linear buckling analysis of the corroded cross-section.  Results from the finite element buckling analysis may be integrated into design capacity equations contained in the 15th edition of the American Institute of Steel Construction Steel Construction Manual.  Non-linear post-buckling analyses were used to verify the accuracy of the proposed method.  Three cross-sectional geometries (W14x82, W14x90, and W14x120) were analyzed at varying degrees of cross-sectional loss.  Results show close agreement between the non-linear finite element analyses and the proposed method of calculating nominal compressive strength.

Steel-Concrete Composite Box Beam Linear Buckling Analysis

2014 ◽  
Vol 620 ◽  
pp. 433-437
Author(s):  
Chong Yang Zhou ◽  
Jian Rong Yang ◽  
Xiao Dong Yang ◽  
Zheng Chong Lai
Keyword(s):  
Buckling Analysis ◽  
Box Girder ◽  
Analysis And Design ◽  
Longitudinal Stiffeners ◽  
Linear Buckling ◽  
Web Stiffeners ◽  
The Stability ◽  
Future Work ◽  
Play Materials ◽  
Linear Buckling Analysis

This article uses the finite element method for a particular steel - concrete composite box girder structures were linear buckling analysis and design optimization of web longitudinal stiffeners. By exploring the effects of longitudinal stiffeners geometry and bending stiffness of the composite box girder stability, drawn steel - concrete composite box girder factor of stability of this structure plays a key role. Meanwhile, the optimization of web stiffeners, stiffeners come to a reasonable arrangement for improving the overall stability of the structure, excellent performance play materials and construction economy plays an important role for the stability of the bridge structure similar to the design of future work provide a reference point.

Study on the Local Buckling Behavior of Steel Equal Angle Members under Axial Compression with the Steel Strength Variation

2011 ◽  
Vol 374-377 ◽  
pp. 2430-2436
Author(s):  
Gang Shi ◽  
Zhao Liu ◽  
Yong Zhang ◽  
Yong Jiu Shi ◽  
Yuan Qing Wang
Keyword(s):  
Finite Element ◽  
Axial Compression ◽  
High Strength Steel ◽  
Local Buckling ◽  
Steel Structures ◽  
High Strength ◽  
Element Analysis ◽  
Equal Angle ◽  
Buckling Behavior ◽  
Steel Strength

High strength steel sections have been increasingly used in buildings and bridges, and steel angles have also been widely used in many steel structures, especially in transmission towers and long span trusses. However, high strength steel exhibits mechanical properties that are quite different from ordinary strength steel, and hence, the local buckling behavior of steel equal angle members under axial compression varies with the steel strength. However, there is a lack of research on the relationship of the local buckling behavior of steel equal angle members under axial compression with the steel strength. A finite element model is developed in this paper to analyze the local buckling behavior of steel equal angle members under axial compression, and study its relationship with the steel strength and the width-to-thickness ratio of the angle leg. The finite element analysis (FEA) results are compared with the corresponding design method in the American code AISC 360-05, which provides a reference for the related design.

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