Research on the numerical simulation of dynamic explosion shock wave propagation characteristics between floors

This study addresses the assessment of dynamic explosive shock wave loads in building damage evaluation. Utilizing numerical simulation methods, we investigated the propagation process of shock waves between building floors, capturing the evolution of their wavefronts. We particularly focused on dis...

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Main Authors: Ke Wu, Bo Chen, Hao Li, Yunfeng Zhang, Damin Zhang, Yixuan Wu, Yaguang Sui
Format: Article
Language:English
Published: AIP Publishing LLC 2025-01-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/5.0239457
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author Ke Wu
Bo Chen
Hao Li
Yunfeng Zhang
Damin Zhang
Yixuan Wu
Yaguang Sui
author_facet Ke Wu
Bo Chen
Hao Li
Yunfeng Zhang
Damin Zhang
Yixuan Wu
Yaguang Sui
author_sort Ke Wu
collection DOAJ
description This study addresses the assessment of dynamic explosive shock wave loads in building damage evaluation. Utilizing numerical simulation methods, we investigated the propagation process of shock waves between building floors, capturing the evolution of their wavefronts. We particularly focused on discussing the variation patterns of pressure peaks caused by vertical shock wave reflections. Computational analysis indicates that under static conditions, inter-floor explosive shock wave overpressure peaks are significantly stronger than those from free-field explosions. Specifically, within a distance range of 2–3 m/kg1/3, the overpressure peak from inter-floor explosions is approximately three times greater than that from free-field explosions. In scenarios involving an equivalent charge of 400 kg and initial velocities ranging up to 1200 m/s, it was observed that shock waves propagate as partially spherical wavefronts within a distance of 15 m between floors; beyond this range, they evolve into nearly planar wavefront propagation. Within this 15 m range, constraints imposed by floor slabs lead to non-uniform and continuously varying vertical pressure distributions. After two reflections, the vertical pressure distribution approaches uniformity. For cylindrical charges, the characteristics of vertical distribution changes in shock waves can be categorized into four stages (while spherical charges correspond to three characteristic stages). The intensity of these variations is primarily influenced by the initial velocity of the explosion source and shows insensitivity toward both the length–diameter ratio and equivalence weight of the charge. Moreover, a model capable of assessing this pressure non-uniformity feature has been established in this paper, which can estimate the pressure distribution characteristics under different initial velocity circumstances rather rapidly and accurately.
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publishDate 2025-01-01
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spelling doaj-art-dce4e8c921f1414b9284cb6bb2a5eb922025-02-03T16:40:42ZengAIP Publishing LLCAIP Advances2158-32262025-01-01151015211015211-1610.1063/5.0239457Research on the numerical simulation of dynamic explosion shock wave propagation characteristics between floorsKe Wu0Bo Chen1Hao Li2Yunfeng Zhang3Damin Zhang4Yixuan Wu5Yaguang Sui6Xi’an Research Institute of High-tech, Xi’an 710025, ChinaNational Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi’an 710024, ChinaNational Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi’an 710024, ChinaNational Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi’an 710024, ChinaNational Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi’an 710024, ChinaNational Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi’an 710024, ChinaNational Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi’an 710024, ChinaThis study addresses the assessment of dynamic explosive shock wave loads in building damage evaluation. Utilizing numerical simulation methods, we investigated the propagation process of shock waves between building floors, capturing the evolution of their wavefronts. We particularly focused on discussing the variation patterns of pressure peaks caused by vertical shock wave reflections. Computational analysis indicates that under static conditions, inter-floor explosive shock wave overpressure peaks are significantly stronger than those from free-field explosions. Specifically, within a distance range of 2–3 m/kg1/3, the overpressure peak from inter-floor explosions is approximately three times greater than that from free-field explosions. In scenarios involving an equivalent charge of 400 kg and initial velocities ranging up to 1200 m/s, it was observed that shock waves propagate as partially spherical wavefronts within a distance of 15 m between floors; beyond this range, they evolve into nearly planar wavefront propagation. Within this 15 m range, constraints imposed by floor slabs lead to non-uniform and continuously varying vertical pressure distributions. After two reflections, the vertical pressure distribution approaches uniformity. For cylindrical charges, the characteristics of vertical distribution changes in shock waves can be categorized into four stages (while spherical charges correspond to three characteristic stages). The intensity of these variations is primarily influenced by the initial velocity of the explosion source and shows insensitivity toward both the length–diameter ratio and equivalence weight of the charge. Moreover, a model capable of assessing this pressure non-uniformity feature has been established in this paper, which can estimate the pressure distribution characteristics under different initial velocity circumstances rather rapidly and accurately.http://dx.doi.org/10.1063/5.0239457
spellingShingle Ke Wu
Bo Chen
Hao Li
Yunfeng Zhang
Damin Zhang
Yixuan Wu
Yaguang Sui
Research on the numerical simulation of dynamic explosion shock wave propagation characteristics between floors
AIP Advances
title Research on the numerical simulation of dynamic explosion shock wave propagation characteristics between floors
title_full Research on the numerical simulation of dynamic explosion shock wave propagation characteristics between floors
title_fullStr Research on the numerical simulation of dynamic explosion shock wave propagation characteristics between floors
title_full_unstemmed Research on the numerical simulation of dynamic explosion shock wave propagation characteristics between floors
title_short Research on the numerical simulation of dynamic explosion shock wave propagation characteristics between floors
title_sort research on the numerical simulation of dynamic explosion shock wave propagation characteristics between floors
url http://dx.doi.org/10.1063/5.0239457
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