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Studies on the Impact of Explosion on Blast Resistant Stiffened Door Structures

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Abstract

The objective of this work is to study the extent of damage that is likely to be caused by a blast load on stiffened steel plate (door structure) designed to withstand blast load using computational methods. In this paper, panels with three types of reinforcements namely T, I and HAT shaped stiffeners are considered. The thickness of these stiffeners is varied to study the extent of increase in the resistance against the damage due to blast load. Special emphasis is given to evaluate mid-point displacements. The finite element package ABAQUS is employed for modeling the cover plate, with three different stiffeners separately having constant height and different thickness. The boundary conditions are assumed to be fixed on all sides and the computational domain is meshed using the S4R type shell element. For the response calculations, the weight of TNT (explosive) applied is varied from 100 to 500 kg with an increment of 100 kg. The blast response of stiffened doors with three different stiffeners subjected to constant blast load was examined systematically. The results of blast load analysis of stiffened door structure for stress, mid-point displacements for T, I and HAT stiffeners were compared against each other. It is found that the blast door structures with HAT stiffener performs better in this application.

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Acknowledgments

The authors would like to thank Jawaharlal Nehru Technological University (JNTUH), Hyderabad, India, for extending the necessary support and facilities to carry out this work and publish.

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Authors and Affiliations

  1. Medak Engineering College, Hyderabad, India

    Lakshmi Shireen Banu Veeredhi

  2. Department of Civil Engineering, Jawaharlal Nehru Technological University, Hyderabad, India

    N. V. Ramana Rao

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  1. Lakshmi Shireen Banu Veeredhi
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  2. N. V. Ramana Rao
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Correspondence to Lakshmi Shireen Banu Veeredhi.

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Veeredhi, L.S.B., Ramana Rao, N.V. Studies on the Impact of Explosion on Blast Resistant Stiffened Door Structures. J. Inst. Eng. India Ser. A 96, 11–20 (2015). https://doi.org/10.1007/s40030-014-0103-x

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  • DOI: https://doi.org/10.1007/s40030-014-0103-x

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