Ultimate strength of square plate with rectangular opening under axial compression
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In this paper, the effect of increase in the size of rectangular opening along the loading direction on the ultimate strength is determined using nonlinear finite element analysis using a general purpose finite element software ANSYS.Abstract:
Unstiffened plates are integral part of ship structures, offshore oil platforms, lock gates and floating docks. Openings are provided in these plates for access and maintenance. Provision of opening influences the ultimate strength of plate elements. In this paper the effect of increase in the size of rectangular opening along the loading direction on the ultimate strength is determined using nonlinear finite element analysis. A general purpose finite element software ANSYS is used for carrying out the study. The software is validated for the ultimate strength of unstiffened plate under axial compression. A parametric study is done for different plate slenderness ratios and by varying the area ratio of opening to plate to determine the effect of ultimate strength on the size of rectangular opening. It is found that increase in area ratio along the loading direction decreases the ultimate strength. The variation in ultimate strength varies linearly for plate slenderness ratio less than 2.23 and varies nonlinearly for plate slenderness ratio beyond 2.23 for area ratio ranging between 0.02 - 0.18. Based on nonlinear regression analysis, a design equation is proposed for square plate with rectangular opening under axial compression. Keywords: Unstiffened Plate, Ultimate Strength, Rectangular Opening, Axial Compression, Design Equation DOI: 10.3329/jname.v4i1.913 Journal of Naval Architecture and Marine Engineering 4(2007) 15-26read more
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TL;DR: In this article, a postbuckling behaviour and the ultimate load capacity of perforated plates with different boundary conditions and subjected to uniaxial or biaaxial compression were investigated.
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Ultimate capacity of uniaxially compressed perforated plates
R. Narayanan,F.Y. Chow +1 more
TL;DR: In this paper, an approximate method of predicting the ultimate load carrying capacity and the postbuckling behavior of perforated plates typically used in engineering structures is presented, based on a mechanism solution, used in conjunction with an elastic loading path derived from energy methods.
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TL;DR: In this article, a review of simple design methods for plate elements under uniaxial compression is provided, and the main governing variables are identified as well as a strength assessment equation that includes them explicitly.
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Strength of perforated plates subjected to in-plane loading
T.M. Roberts,Z.G. Azizian +1 more
TL;DR: In this article, a finite element solution for the buckling and geometrically nonlinear elasto-plastic collapse of perforated plates is presented, which is in close agreement with existing approximate and semi-empirical solutions.