Numerical Analysis of Structures under The effect of Ground Shock Induced from Blast Loads

Blast loads have come into attention in recent years due to the large number of accidental events. So, important and critical structures may be designed to resist transient extreme loads such as high velocity impacts and explosions. In reality, a surface explosion generates both ground shock and air...

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Main Authors: Tarek Salem, Nabil Nagy, Ahmed Arafa
Format: Article
Language:English
Published: Port Said University 2017-09-01
Series:Port Said Engineering Research Journal
Subjects:
Online Access:https://pserj.journals.ekb.eg/article_33300_95b795bbb13f95c99be837bd575736a4.pdf
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author Tarek Salem
Nabil Nagy
Ahmed Arafa
author_facet Tarek Salem
Nabil Nagy
Ahmed Arafa
author_sort Tarek Salem
collection DOAJ
description Blast loads have come into attention in recent years due to the large number of accidental events. So, important and critical structures may be designed to resist transient extreme loads such as high velocity impacts and explosions. In reality, a surface explosion generates both ground shock and air blast pressure on nearby structures, of which the ground shock usually arrives at structure foundation earlier than air blast pressure because of the different wave propagation velocities in soil and air. The ground shock will excite the structure to move and it will not response to air blast pressure from zero initial condition. So, a separate study accounting for the effect of an explosion ground shock on a nearby structure has been performed using FEM software ABAQUS. The analysis started with a static step which include applying initial stress due to soil and structure’s own weights, and additional structural loads, after that the model is analyzed under the blast loading near the structure, then a parametric study including the charge weight, the distance of the charge and the structure height has been performed. Results showed that the structure is exposed to additional displacements and deformations in both horizontal and vertical directions resulting in shifting its foundations and additional settlements.
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spelling doaj.art-029b644deea4409db6856f67d39d50f62023-10-23T06:07:34ZengPort Said UniversityPort Said Engineering Research Journal1110-66032536-93772017-09-0121212012710.21608/pserj.2017.3330033300Numerical Analysis of Structures under The effect of Ground Shock Induced from Blast LoadsTarek Salem0Nabil Nagy1Ahmed Arafa2Department of Civil Engineering, Faculty of Engineering, Zagazig UniversityMilitary Technical College, CairoDepartment of Civil Engineering, Faculty of Engineering, Zagazig UniversityBlast loads have come into attention in recent years due to the large number of accidental events. So, important and critical structures may be designed to resist transient extreme loads such as high velocity impacts and explosions. In reality, a surface explosion generates both ground shock and air blast pressure on nearby structures, of which the ground shock usually arrives at structure foundation earlier than air blast pressure because of the different wave propagation velocities in soil and air. The ground shock will excite the structure to move and it will not response to air blast pressure from zero initial condition. So, a separate study accounting for the effect of an explosion ground shock on a nearby structure has been performed using FEM software ABAQUS. The analysis started with a static step which include applying initial stress due to soil and structure’s own weights, and additional structural loads, after that the model is analyzed under the blast loading near the structure, then a parametric study including the charge weight, the distance of the charge and the structure height has been performed. Results showed that the structure is exposed to additional displacements and deformations in both horizontal and vertical directions resulting in shifting its foundations and additional settlements.https://pserj.journals.ekb.eg/article_33300_95b795bbb13f95c99be837bd575736a4.pdfblast loadstructural responsesoil behaviorabaqus
spellingShingle Tarek Salem
Nabil Nagy
Ahmed Arafa
Numerical Analysis of Structures under The effect of Ground Shock Induced from Blast Loads
Port Said Engineering Research Journal
blast load
structural response
soil behavior
abaqus
title Numerical Analysis of Structures under The effect of Ground Shock Induced from Blast Loads
title_full Numerical Analysis of Structures under The effect of Ground Shock Induced from Blast Loads
title_fullStr Numerical Analysis of Structures under The effect of Ground Shock Induced from Blast Loads
title_full_unstemmed Numerical Analysis of Structures under The effect of Ground Shock Induced from Blast Loads
title_short Numerical Analysis of Structures under The effect of Ground Shock Induced from Blast Loads
title_sort numerical analysis of structures under the effect of ground shock induced from blast loads
topic blast load
structural response
soil behavior
abaqus
url https://pserj.journals.ekb.eg/article_33300_95b795bbb13f95c99be837bd575736a4.pdf
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