Second‐Order Inelastic Analysis Methods for Steel‐Frame Design

1992 ◽  
Vol 118 (2) ◽  
pp. 408-428 ◽  
Author(s):  
W. S. King ◽  
D. W. White ◽  
W. F. Chen
Keyword(s):  
Steel Frame ◽  
Second Order ◽  
Frame Design ◽  
Inelastic Analysis ◽  
Analysis Methods

scholarly journals The trends and practical look of advanced steel frame structures

2020 ◽  
Vol 16 (3) ◽  
pp. 203-208
Author(s):  
Nikolay I. Vatin ◽  
Tesfaldet Hadgembes Gebre ◽  
Shishay Berhane Gebreslassie
Keyword(s):  
Case Studies ◽  
Steel Frame ◽  
Second Order ◽  
Frame Structures ◽  
Analysis Method ◽  
First Order ◽  
Inelastic Analysis ◽  
Analysis Methods ◽  
Steel Frame Structures ◽  
Advanced Analysis

The aim of the work is to present the trend of the advancement of steel design code and practical approach of steel frame design from the current AISC-LFDR to the advanced analysis. As the trend of steel frame analysis method is from first-order elastic analysis to second-order inelastic analysis which is an advanced analysis. Methods. In this paper the comparison between the load - displacement curves of several structural analysis methods is presented. Case studies are considered to analyze by different methods and comparison of practical advanced analysis method with PROKON software. The case studies includes a two-story one bay steel frame and four bays of twelve-stories steel frame. The results of first-order elastic, elastic buckling, second-order and nonlinear analyses of an unbraced frame are compared and their difference is presents. The proposed software for advanced methods demonstrates the accuracy and the computational efficiency in predicting the nonlinear analysis response of steel frame structures.

A Second-Order Inelastic Analytical Method on Semirigid Connections Steel Frame

2010 ◽  
Vol 163-167 ◽  
pp. 760-765
Author(s):  
Jian Liu ◽  
Xiang Yun Huang ◽  
Ji Ping Hao ◽  
Guan Gen Zhou ◽  
Deng Feng Peng
Keyword(s):  
Axial Force ◽  
Steel Structure ◽  
Steel Frame ◽  
Second Order ◽  
Frame Structures ◽  
Stability Function ◽  
Inelastic Analysis ◽  
Semirigid Connections ◽  
Steel Frame Structures ◽  
Shearing Deformation

A second-order inelastic analysis of semirigid connection steel frame structures is developed. Therein, shearing deformation and axial force simultaneously are considered. A new stability function considered shearing deformation and axial force simultaneously is proposed and the analysis methods for steel structure of semirigid connection based on the structural ultimate bearing capacity are established. The calculatical programe of second-order inelastic analysis semirigid connection steel frame structures is compiled. The numerical examples of steel frames for semirigid connection are analysed using the second-order inelastic analysis in the paper. Load–displacements predicted by the proposed analysis compare well with those given by other approaches. The analysis results show that the proposed method is suitable for adoption in practice.

Direct second-order elastic analysis for steel frame design

2008 ◽  
Vol 12 (6) ◽  
pp. 379-389 ◽  
Author(s):  
C. K. Iu ◽  
W. F. Chen ◽  
S. L. Chan ◽  
T. W. Ma
Keyword(s):  
Steel Frame ◽  
Second Order ◽  
Elastic Analysis ◽  
Frame Design

Second-order analysis for semirigid steel frame design

2001 ◽  
Vol 28 (1) ◽  
pp. 59-76 ◽  
Author(s):  
Lei Xu
Keyword(s):  
Steel Frame ◽  
Second Order ◽  
Rotational Behaviour ◽  
Analysis Method ◽  
Frame Design ◽  
Analysis And Design ◽  
Order Analysis ◽  
Rigid Frame ◽  
Structural Responses ◽  
Fixity Factor

This paper presents an analysis method in which both the nonlinear rotational behaviour of beam-to-column connections and second-order (P-Δ and P-δ) effects of beam-column members are explicitly taken into account. By adopting the concept of an end-fixity factor, the proposed method is comprehensive regardless of the end rotational conditions of beam-column members and applies to frames with any combination of pinned, semirigid and rigid beam-to-column connections. In addition, the end-fixity factor simplifies the analysis procedure for semirigid frames. More importantly, the end-fixity factor may be valuable to the design of such structures because it provides a physical interpretation of the extent of rigidity available in a connection. Thus, it provides a convenient way for designers to compare the structural responses of a semirigid member to that of a rigid one. Examples are presented to demonstrate the validity and efficiency of the proposed approach. With only minor modifications, the proposed method is readily implemented in existing rigid frame analysis and design computer programs.Key words: steel frame, semirigid connection, second-order analysis, P-Δ effect.

An approach to combine the second-order and third-order analysis methods for optimization of a Stirling engine

2018 ◽  
Vol 165 ◽  
pp. 447-458 ◽  
Author(s):  
Gang Xiao ◽  
Yiqing Huang ◽  
Shulin Wang ◽  
Hao Peng ◽  
Mingjiang Ni ◽  
...  
Keyword(s):  
Stirling Engine ◽  
Second Order ◽  
Third Order ◽  
Order Analysis ◽  
Analysis Methods

A Novel Incremental Iterative Force Recovery Method for Second-Order Beam-Column Elements in Plastic Hinge Analysis of Steel Frames

2021 ◽  
Author(s):  
Yi-Qun Tang ◽  
He Zhu ◽  
Er-Feng Du
Keyword(s):  
Plastic Hinge ◽  
Steel Frames ◽  
Direct Analysis ◽  
High Accuracy ◽  
Second Order ◽  
Single Element ◽  
Recovery Method ◽  
Inelastic Analysis ◽  
Force Recovery ◽  
Plastic Hinge Method

This paper is concerned with an incremental iterative force recovery method in the second-order plastic hinge analysis of steel frames mainly modelled by a single element per member. Second-order beam-column elements are preferred in the direct analysis of steel frames due to their high accuracy and efficiency. However, formulations of these elements are complicated, and therefore they may have a problem of getting element force recovery in inelastic analysis. To overcome this difficulty, a novel incremental iterative force recovery method for second-order beam-column elements is proposed to perform plastic hinge analysis. The proposed method is derived more strictly and has good performance. Also, the section assemblage approach and the refined plastic hinge method are adopted in this study to consider the gradual degradation of section stiffness in the plastic hinge analysis. To verify the accuracy, efficiency and robustness of the proposed method, several benchmark examples are analyzed by the proposed method and compared with solutions reported by early researchers.

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