International Journal of Engineering Research in Mechanical and Civil Engineering (IJERMCE)

Monthly Journal for Mechanical and Civil Engineering

Volume2,March 2017,

Topic : Performance Assessment of Curved Steel Wall under Blast Loading

Authors:Sreekanth Palla || M. D. Goel

Abstract:Structural engineering strategies can improve the blast resisting capacity of the elements. Blast resistance performance of elements can also be improved by varying geometry of the elements. In the present investigation, dynamic analysis of steel sacrificial blast wall is carried out with varying angle of curvature and thickness of wall. Three-dimensional nonlinear dynamic analysis of steel wall under blast loading has been carried out using ABAQUS® finite element package. Trapezoidal impulse with uniform pressure has been considered for defining blast loading. Performance of wall is compared with equivalent triangular loading to understand the effect on peak deflection. Three-dimensional deformable shell element (S4R i.e. 4-noded doubly curved thin or thick shell, reduced integration, hourglass control and finite membrane strains) has been used for FE analysis of wall. Analysis has been carried out with varying angle of curvature along top one-fourth length of wall. Performance of curved walls is compared with that of straight vertical wall in terms of peak deflection. Further, effect of thickness of wall, on the blast resistance, has been investigated. Deflection at various points along the height of wall and strain energy curves of wall are also computed and analyzed. From the present analysis, it is observed that variation in angle of curvature of wall results in considerable improvement in performance of wall against blast loading. Models with trapezoidal blast loading and equivalent triangular loading shows almost similar results. Increase in thickness of wall results in reduced deflection against blast loading..

Keywords: Blast, Curved Steel Wall, ABAQUS®/Explicit, Dynamic Response.

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DOI: 01.1617/vol4/iss3/pid32157


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ISSN(Online): 2456-1290

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Journal Code : IJERMCE
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