THE POST-BUCKLED BEHAVIOR IN THIN-WALLED CONSTRUCTION AND ITS PARTIAL "EROSION" UNDER REPEATED LOADING

2011 ◽  
Vol 11 (05) ◽  
pp. 805-827 ◽  
Author(s):  
MIROSLAV ŠKALOUD ◽  
MARIE ZÖRNEROVÁ
Keyword(s):  
Repeated Loading ◽  
Steel Girders ◽  
Thin Walled Structures ◽  
Steel Construction ◽  
Plate Elements ◽  
Thin Walled ◽  
User Friendly ◽  
Fabrication Costs

There are two ways to make steel construction more competitive: (i) to save steel (via thin-walled structures) and (ii) to save fabrication costs (via economic-fabrication structures). The authors' studies on post-buckled behavior in thin-walled construction and its partial "erosion" under many times repeated loading are described. S–N curves are established by the authors based on their numerous tests, such as to be used in the design of webs breathing under repeated loading. A reduction of some fabrication procedures as a way to economic-fabrication construction is discused, e.g. the possibility to avoid straightening of plate elements involved. Formulae for a user-friendly design of the webs of economic-fabrication steel girders, such as to make it possible to disregard their breathing, are also presented.

Non-linear analysis of thin-walled structures using plate elements

1994 ◽  
Vol 37 (10) ◽  
pp. 1697-1711 ◽  
Author(s):  
C. K. Chin ◽  
F. G. A. Al-Bermani ◽  
S. Kitipornchai
Keyword(s):  
Linear Analysis ◽  
Thin Walled Structures ◽  
Plate Elements ◽  
Non Linear ◽  
Thin Walled

scholarly journals Applicability of thin-walled structures for energy-savings in steel construction

2019 ◽  
Vol 91 ◽  
pp. 02042
Author(s):  
Natalia D. Korsun ◽  
Daria A. Prostakishina
Keyword(s):  
Cross Section ◽  
Energy Savings ◽  
Effective Characteristics ◽  
Geometric Imperfections ◽  
Thin Walled Structures ◽  
Steel Construction ◽  
Full Cross Section ◽  
Initial Geometric Imperfections ◽  
Thin Walled ◽  
The Cross

The paper discusses the use of lightweight thin-walled structures which make it possible to save resources in steel construction. The highlighted challenges that this industry face in the Russian Federation involve insufficient development of the domestic standards. A thin-walled sigma-profile element with 300 mm in a section height has been studied. The element, its design diagram and loading have been chosen taking into account the structural performance of the columns and girders involved in CFS frameworks. The paper presents analysis technique for a thin-walled profile which performs under axial compression and axial bending compression. The structures have been calculated taking into account their main feature - the initial geometric imperfections. The analysis of the changed effective characteristics and stresses in the cross-section has revealed the significant influence of the initial geometric imperfections of the profiles and location of the extra eccentricity against the element’s initial curvatures. The elastic-plastic behaviour of material occurs when the stresses in the full cross-section achieve 0.71 Ryignoring the initial geometric imperfections, and 0.58 Ry– with regard to them. The paper substantiates the need to consider unevenness of the mechanical properties of steel distributed over the cross-section of the profile. Based on the experimental data obtained, conclusions have been drawn on the necessary adaptation of the indirect method for evaluating the strength characteristics of thin-walled samples.

The “Miracle” of Post-Buckled Behaviour in Thin-Walled Steel Construction and its Breathing-Induced Limitation

2016 ◽  
Vol 821 ◽  
pp. 539-546
Author(s):  
Miroslav Škaloud ◽  
Marie Zörnerová ◽  
Shota Urushadze
Keyword(s):  
Limit State ◽  
Steel Structures ◽  
Cumulative Damage ◽  
The Other ◽  
Repeated Loading ◽  
Thin Walled Structures ◽  
Other Hand ◽  
Damage Process ◽  
Post Buckling ◽  
Thin Walled

Thin-walled construction represents a powerful tool for saving steel and thereby for increasing the competitiveness of steel structures. However, on the other hand, as the limit state of thin-walled structures is substantially affected by stability phenomena, the above concept can be implemented just on the condition of post-buckled behaviour being taken into account in the solution to these stability phenomena. The paper first briefly studies the factors on which the intensity of the very favourable post-buckling reserve of strength depends and then in detail turns attention to the most important among them, viz. the effect of the cumulative-damage process that becomes manifest in the case of bridges and other systems subjected to many times repeated loading.

scholarly journals Educational Software for Stress Analysis of Idealized Closed Thin Walled Sections

2018 ◽  
Vol 7 (4.36) ◽  
pp. 368
Author(s):  
J. S. Mohamed Ali ◽  
Hasna Nur Fadhila ◽  
Burhani M. Burhani ◽  
Miah Mohammed Riyadh
Keyword(s):  
User Interface ◽  
Stress Analysis ◽  
Graphical User Interface ◽  
Educational Software ◽  
Multiple Loads ◽  
Thin Walled Structures ◽  
Different Types ◽  
Torsional Loads ◽  
Thin Walled ◽  
User Friendly

Aerospace structures are typically semi-monocoque structures that are made up of thin-walled closed section reinforced with stiffeners. Stress analysis of such closed thin-walled structures which are statically indeterminate is tedious and time consuming. An educational software which can aid students in carrying out stress analysis of such idealized thin-walled closed sections has been developed. The software enables students to select different types of wing torsion box sections with stiffeners, which may be subjected to bending, shear or torsional loads and evaluate the resulting stresses on it. The software allows the student to idealize a selected twin spar unsymmetrical wing section with multiple booms under multiple loads. Results from this software have been validated against the results in the literature. The software has been developed using MATLAB with graphical user interface (GUI) which is very user friendly.   

Frame-Monolithic Technology of Construction of Low-Rise Buildings Made of Foam Gypsum and Steel Thin-Walled Structures

2018 ◽  
Vol 762 (8) ◽  
pp. 36-39 ◽  
Author(s):  
B.G. BULATOV ◽  
◽  
R.I. SHIGAPOV ◽  
M.A. IVLEV ◽  
I.V. NEDOSEKO ◽  
...  
Keyword(s):  
Thin Walled Structures ◽  
Thin Walled
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