Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-24881
Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Dynamic analysis of cylindrical shells subject to multiple blasts using FSI
Authors: Mehreganian, Navid
Boiger, Gernot Kurt
Moatamedi, Mojtaba
Fallah, Arash
et. al: No
DOI: 10.21152/1750-9548.15.4.453
10.21256/zhaw-24881
Published in: The International Journal of Multiphysics
Volume(Issue): 15
Issue: 4
Page(s): 453
Pages to: 476
Issue Date: Dec-2021
Publisher / Ed. Institution: International Society of Multiphysics
ISSN: 1750-9548
2048-3961
Language: English
Subjects: Multiphysics; Modeling; Simulation; FSI; CFD; Finite element; Finite volume; Computational physics
Subject (DDC): 530: Physics
Abstract: Localised pressure pulse loads can pose a significant threat to structural elements and critical equipment and may cause failure and damage in the target due to the concentrated energy delivered upon a localised area of the target. The impulse impinged upon the local area at the contact interface can exceed 80% of the total impulse that the charge can deliver upon the infinite target, leading to potential perforation of the structural element. When multiple charges are detonated, the advection of gaseous products depends, among other parameters such as fluid density, on the type of blast wave interference and superposition. This work examines the influence of multiple charge detonations blasted in the air on the external surface of cylindrical shells. Two types of detonations were considered, viz. simultaneous and sequential. In both cases the charges were positioned at 50mm and 75mm stand-off to the right and left of the shell. The Fluid-Structure Interaction (FSI) phenomenon was investigated in each scenario. The pressure registered with the gauge points of the rigid target was implemented in an uncoupled study on a flexible target which demonstrated different mode shapes occurring in the shell due to each blast scenario. A dimensionless impulse parameter was defined based on the Gaussian distribution function associated with the load shape, which renders the probability of the impulse as the total impulse that can potentially be imparted to the target.
URI: https://digitalcollection.zhaw.ch/handle/11475/24881
Fulltext version: Published version
License (according to publishing contract): CC BY 4.0: Attribution 4.0 International
Departement: School of Engineering
Organisational Unit: Institute of Computational Physics (ICP)
Appears in collections:Publikationen School of Engineering

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