Papers by Keyword: Overall Stability

Abstract: The influence of local buckling on the bearing capacity of light steel thin-walled profiles is a hot topic today. In this paper we evaluated the effect of the thickness of the elements of the cross section on bearing capacity the profile in a transverse bending.

Abstract: This paper applicate steel bending member in-plane is bending performance calculation formula that at the normal temperature steel structure under the action of uniformly distributed load and derived rules of calculation method of in-plane bending performance that steel bending member under the high temperature , the steel bending member in the practical example should be analyzed by the finite element software ANSYS, through the analysis and verify the accuracy of the calculation method that the steel structure bending member under uniform distributed load in-plane bending performance

Abstract: Local buckling and accounting of the geometric nonlinearity of light steel thin-walled profiles is an important topic. The authors assesses the influence of geometric nonlinearity on the bearing capacity profile in transverse bending conditions.

Abstract: Work is devoted to the actual topic - local buckling of light steel thin-walled sections. Method of calculating stability in thin-walled structures described in the work. The mechanisms of local buckling under transverse bending considered by authors.

Abstract: Most methods for calculating bearing capacity profiles section of complex shape local buckling (LPA) are ignored. The problem of LPA rod is reduced to the problem of overall sustainability. At the design stage constructions of thin-walled beams, it is important to have a simple method for estimating the bearing capacity and the potential loss of local and general stability of the structure.

Abstract: 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.

Abstract: Taking partial monosymmetrical and T type section Q235 steel beam as an example, using finite element analysis software ANSYS, the paper had numerical analysis of overall stability of T type section and simply supported beam under the uniform load, and compared with the current code for design of steel structures. The paper discussed the effect of slenderness ratio. The results show when the T shaped section steel beam slenderness ratio is less than 120, numerical analysis method and the "standard" methods agree well, but when the slenderness ratio is greater than 120, the error is larger.

Abstract: There are three levels in stability calculating for sway frame. The first level is the traditional effective length method. The second level is the effective length method considering interaction of columns in one story and the third level is the effective length method considering inter-story interaction. The traditional effective length method may lead to unsafe design. Using the concept of equivalent negative stiffness, story stiffness to negative stiffness ratio factor and story support factor were proposed. Through the story stiffness to negative stiffness ratio factor, the weak-story and the inter-story support relationship can be found. Then, a formula for calculating the elastic stability capacity of sway frame is proposed, by which the inter-column interaction and inter-story interaction can be considered, and the finite element buckling analysis for stability capacity can be avoided. Through the stability capacity, the column effective length can be calculated. The results show that this simple calculation method has good precision and accuracy, can be used for engineering design and theoretical calculations.

Abstract: On the base of finite element linear Eigen value analysis, overall stability analysis of Schwedler reticulated dome has been conducted by means of the nonlinear finite element method. The arc-length method was utilized to solve the nonlinear equation systems, and the load-displacement curves of the spatial latticed shell structure were obtained. It is safer to adopt the nonlinear buckling analysis for structure. These can provide a valuable reference for the design and analysis of the similar special latticed shell.

Abstract: In petrochemical industry, single layer dome steel structure is usually used to support dome roof in cylindrical tank. This paper takes a dome steel structure with a diameter of 52m（type Kiewitt）designed by a petrochemical corporation of Lianyungang as an example. According to the People's Republic of China industry standard JGJ61-2003, utilizing Arc-Length method of the finite element analysis software Abaqus to analyze this example’s overall non-linear geometry, and utilizing finite element increment iteration to analyze this example’s response during the whole loading, we obtain the instability critical loads eventually. The results reveal that under given loading the load factor of dome steel structure is 5.426 and overall instability will not occur.