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| dc.contributor.author | BIRHANEMESKEL, ASMAMAW | |
| dc.date.accessioned | 2022-12-25T08:34:18Z | |
| dc.date.available | 2022-12-25T08:34:18Z | |
| dc.date.issued | 2022-03 | |
| dc.identifier.uri | http://ir.bdu.edu.et/handle/123456789/14757 | |
| dc.description.abstract | A thin shell is a three-dimensional spatial structure made up of one or more curved surfaces in which their thickness is small as compared to the other dimensions. Shells belong to the class of stressed skin structures which, because of their geometry and small flexural rigidity of the skin, tend to carry loads primarily by direct stresses acting in their plane. The shell structures nature has maximized the ability to span over large areas with a minimum amount of material. Previously experimental and numerical investigation were conducted on the effect of edge constraint, crown depth and the effects of cutout on the buckling load of isotropic compression loaded shells. But there is no numerical investigation done on the structural performance of the skin shell with variable geometrical parameters like thickness of shell, outer radius of curvature and crown opening in doubly curved skin shells. The main aim of this research is to investigate the effect of geometrical parameters in skin shell with a defined shape and cut out under normal and seismic condition. The validation of finite element analysis is done using a flat, circular concrete shell to test isotropic behavior. The numerical investigation was done with the geometry of Doubly curved shells, which are square in plan and having 28.28mX28.28m dimensions. The finite element modeling and analysis were done using finite element software SAP2000. The analysis was done varying the dome height, outer radius of curvature, shell thickness and crown opening of the dome. The analysis result shows that in both static and dynamic conditions the increase in rise of spherical shell the membrane stresses; meridional stresses and hoop stress tends to decrease. Keywords: SAP 2000, Shell, Finite element analysis (FEA), nonlinear analysis, doubly curved thin shells | en_US |
| dc.language.iso | en_US | en_US |
| dc.subject | CIVIL AND WATER RESOURCE ENGINEERING | en_US |
| dc.title | A PARAMETRIC ANALYSIS OF SKIN SHELL WITH A DEFINED GEOMETRIC SHAPE AND CUT OUT UNDER NORMAL AND SEISMIC CONDITION | en_US |
| dc.type | Thesis | en_US |
