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Skin effect on the mechanical properties of light steel

Author: ShiYanLi
Tutor: WangXiuLi
School: Lanzhou University of Technology
Course: Structural Engineering
Keywords: Diaphragm effect Finite Element Analysis Horizontal load Openings skin Parametric analysis
CLC: TU392.5
Type: Master's thesis
Year: 2005
Downloads: 258
Quote: 11
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Abstract


Light steel housing, pressure plate while doing maintenance structure, when good connection with steel members, can also withstand the loads within the plane of the maintenance of the structure that shear plane, known as the stressed skin effect. Reliable skin panels and components to connect, to participate in the work of the structural system, increase the overall stiffness of the structure, reducing the lateral displacement of the structure components connected to it to provide effective lateral confinement effects, which can reduce or cancel some of the support member, even possible to reduce the cross sectional area of ??the member. Therefore, considering the stressed skin effect, not only a true reflection of the structure of the actual work performance, but also to achieve considerable economic benefits. Although scholars at home and abroad by skin performance a great deal of research and testing but previous studies are mainly for skin member, especially between skin panels or skin panels and their support rods The connection between skin structure housing the less overall research and testing, this article using the finite element program ANSYS through housing not consider the general housing diaphragm action and consider the skin effect of geometric nonlinear finite element analysis, studies the structure of the distribution pattern of internal forces and deformation, discovered by comparative analysis of the contribution of the skin of the role of the structure. First, choose a suitable unit and create a finite element model analysis to the skinning support axial compression members, compared with existing experimental results prove that the finite element program ANSYS finite element analysis of the structure considering skin effect. Established on the basis of the finite element model of a single layer of light steel structure considering the skin effect and analysis of the results with the results obtained using the the British standard calculation method consistent with good, further proof of the correctness of the method. Secondly, consider skin not consider skin comparative analysis, analysis of cold-formed thin-walled structure column spacing changes the structure of the single-layer light steel and cold-formed thin-walled structure, and taking into account the actual structure of the doors and windows open hole needs to analyze the structure of the two common forms of open holes, in order to further determine the best position of the skin open hole, followed by analysis of the role of each part of the skin of the roof skin, gable skin structure and roof structure Sway and Internal Forces and the combined effects of the skin of the gable, consider the main factors affecting the skin effect, such as: the slenderness ratio of the thickness of the steel sheeting, frame column, gable support sectional area of ??the parameters analysis of the impact of these factors on the structure the sway, stress and internal forces and law, to provide good recommendations for the design and construction of the skin structure. Finally, some general rules of engineering practice designed to consider the skin effect and recommendations, and lay a good foundation for further study.

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CLC: > Industrial Technology > Building Science > Building structure > Metal structures > Various types of steel > Light steel
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