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• W2129066054 abstract "In the presented work, the buckling and post buckling behavior of circular thin walled shells with different thickness contain elliptical cutout or circular cutout with various locations, was investigated through experimental and numerical studies. Finite element analysis using Abaqus software was conducted to evaluate the Buckling load capacity of the shells.Also experiments are conducted on several Specimens made of stainless steel 316ti by using an Instron 8802 servo-hydraulic machine. A very good correlation was observed between numerical simulation and experimental results. The investigation examined the influence of the shell thickness and cutout position on the buckling and post-buckling responses of the thin walled shells with circular and elliptical cutout. Also, effect of cutout shape on thin walled shells under these kinds of loadings has been studied. Thin walled cylindrical members, due to their specific structural and geometrical characteristics, are commonly utilized as load carrying components in various fields of engineering. The prediction of buckling behavior of these shells is obviously necessary and, fortunately, is possible and feasible through various experimental and numerical methods. Recently, among the latter approaches, the FEM method is considered to be a powerful tool for investigation of the final buckling load of thin-walled shells. However, to assure the authenticity of the obtained results through this method, it seems necessary that these results are validated with experimental data. Buckling of thin-walled shells with circular sections was the subject of a massive study using both numerical and experimental approaches during the last decades (1-3). Many studies were done that covered a wide range of thin-walled tube applications, among which were numerical and experimental investigations of the effects of circular, square, and rectangular cutouts on the buckling tests of cylindrical shells subjected to axial, bending, andtwisting loads; design curves were obtained for various loading conditions. Jullien (3) studied the influence of circular, square, and rectangular cutouts on the buckling of cylindrical thin-walled shells under axial load and presented a parametric relationship between the shape and dimensions of the cutouts. also, the effect of location and number of cutouts was studied. Shariati and rokhi (4) studied numerically simulation and analysis of steel cylindrical shells with various diameter and length having an elliptical cutout, subjected to axial compression. They investigated examined the influence of the cutout size, cutout angle and the shell aspect ratios L/D and D/t on the pre-buckling, buckling, and post-buckling responses of the cylindrical shells. Han et al. (5) studied the effect of dimension and position of square-shaped cutouts in thin and moderately thick-walled cylindrical shells of various lengths by nonlinear numerical methods using the ANSYS software. They also compared their results with experimental studies on moderately thick-walled shells. Finally, they developed several parametric relationships based on the analytical and experimental results using the least squares regression method. Ben Young (6,7) investigated hollow columns made of aluminum alloy using numerical and experimental methods. In this research,a nonlinear finite elements model was used to predict failure loads and modes. Moreover, it indicated that theprinciples of the design presented in this research has predicted the final tension of aluminum columns whose two ends have and have not been welded with a satisfactory precision.Dimopoulos (8) studied the buckling behavior of cantilevered shells with opening and stiffening experimentally and numerically. He focuses on shell slenderness as well as opening and stiffening reflecting the main geometric characteristics of wind turbine towers. Shariati and Mahdizadeh (9) performed numerical study using Abaqus software to investigate the response of steel cylindrical shells with different lengths and diameters, including elliptical cutout subjected to bending moment. They presented some relations for finding of buckling moment of these structures. Haipeng Han et al. (10) studied the effect of dimension and position of square- shaped cutouts in thin and moderately thickwalled cylindrical shells of various lengths by nonlinear numerical methods using the ANSYS software. They also compared their results with experimental studies on moderately thick-walled shells." @default.
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• W2129066054 date "2012-08-12" @default.
• W2129066054 modified "2023-09-26" @default.
• W2129066054 title "Buckling and Post Buckling Investigation of Thin Walled Shells Contain Elliptical and Circular Cutout, Subjected to Oblique Loading" @default.
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