Validation of underwater explosion response analysis for airbag inflator using a fluid-structure interaction algorithm
Air gun shock systems are commonly used as alternative explosion energy sources for underwater explosion (UNDEX) shock tests owing to their low cost and environmental impact. The airbag inflator of automotive airbag systems is also very useful to generate extremely rapid underwater gas release in la...
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doaj-5f87fe5583db4271a7a81ea6fc909bea2021-01-08T04:19:55ZengElsevierInternational Journal of Naval Architecture and Ocean Engineering2092-67822020-01-0112988995Validation of underwater explosion response analysis for airbag inflator using a fluid-structure interaction algorithmSang-Gab Lee0Jae-Seok Lee1Hyun Chung2Yangsup Na3Kyung-Hoon Park4Division of Naval Architecture and Ocean Systems Engineering, Korea Maritime & Ocean University, and Marine Safety Technology, 727 Taejong-Ro, Yeongdo-Gu, Busan, 49112, South Korea; Corresponding author.Division of Naval Architecture and Ocean Systems Engineering, Korea Maritime & Ocean University, and Marine Safety Technology, 727 Taejong-Ro, Yeongdo-Gu, Busan, 49112, South KoreaDepartment of Naval Architecture & Ocean Engineering, Chungnam National University, 99 Daehak-Ro, Yuseong-Gu, Dajeon, 34134, South KoreaSecurity Convergence Institute, Korea Advanced Institute of Science and Technology, 291 Daehak-Ro, Yuseong-Gu, Daejeon, 34141, South Korea3 Marine System Technology Institute, Agency for Defense Development, Jinhae-Gu, Changwon-Si, Gyeongsangnam-Do, 51678, South KoreaAir gun shock systems are commonly used as alternative explosion energy sources for underwater explosion (UNDEX) shock tests owing to their low cost and environmental impact. The airbag inflator of automotive airbag systems is also very useful to generate extremely rapid underwater gas release in lab-scale tests. To overcome the restrictions on the very small computational time step owing to the very fine fluid mesh around the nozzle hole in the explicit integration algorithm, and also the absence of a commercial solver and software for gas UNDEX of airbag inflator, an idealized airbag inflator and fluid mesh modeling technique was developed using nozzle holes of relatively large size and several small TNT charges instead of gas inside the airbag inflator. The objective of this study is to validate the results of an UNDEX response analysis of one and two idealized airbag inflators by comparison with the results of shock tests in a small water tank. This comparison was performed using the multi-material Arbitrary Lagrangian-Eulerian formulation and fluid-structure interaction algorithm. The number, size, vertical distance from the nozzle outlet, detonation velocity, and lighting times of small TNT charges were determined. Through mesh size convergence tests, the UNDEX response analysis and idealized airbag inflator modeling were validated.http://www.sciencedirect.com/science/article/pii/S2092678220300534Alternative explosion energy sourceUnderwater explosion (UNDEX) response analysisIdealized airbag inflatorMulti-material arbitrary Lagrangian-Eulerian (MMALE) formulationFluid-Structure Interaction (FSI) algorithm |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Sang-Gab Lee Jae-Seok Lee Hyun Chung Yangsup Na Kyung-Hoon Park |
spellingShingle |
Sang-Gab Lee Jae-Seok Lee Hyun Chung Yangsup Na Kyung-Hoon Park Validation of underwater explosion response analysis for airbag inflator using a fluid-structure interaction algorithm International Journal of Naval Architecture and Ocean Engineering Alternative explosion energy source Underwater explosion (UNDEX) response analysis Idealized airbag inflator Multi-material arbitrary Lagrangian-Eulerian (MMALE) formulation Fluid-Structure Interaction (FSI) algorithm |
author_facet |
Sang-Gab Lee Jae-Seok Lee Hyun Chung Yangsup Na Kyung-Hoon Park |
author_sort |
Sang-Gab Lee |
title |
Validation of underwater explosion response analysis for airbag inflator using a fluid-structure interaction algorithm |
title_short |
Validation of underwater explosion response analysis for airbag inflator using a fluid-structure interaction algorithm |
title_full |
Validation of underwater explosion response analysis for airbag inflator using a fluid-structure interaction algorithm |
title_fullStr |
Validation of underwater explosion response analysis for airbag inflator using a fluid-structure interaction algorithm |
title_full_unstemmed |
Validation of underwater explosion response analysis for airbag inflator using a fluid-structure interaction algorithm |
title_sort |
validation of underwater explosion response analysis for airbag inflator using a fluid-structure interaction algorithm |
publisher |
Elsevier |
series |
International Journal of Naval Architecture and Ocean Engineering |
issn |
2092-6782 |
publishDate |
2020-01-01 |
description |
Air gun shock systems are commonly used as alternative explosion energy sources for underwater explosion (UNDEX) shock tests owing to their low cost and environmental impact. The airbag inflator of automotive airbag systems is also very useful to generate extremely rapid underwater gas release in lab-scale tests. To overcome the restrictions on the very small computational time step owing to the very fine fluid mesh around the nozzle hole in the explicit integration algorithm, and also the absence of a commercial solver and software for gas UNDEX of airbag inflator, an idealized airbag inflator and fluid mesh modeling technique was developed using nozzle holes of relatively large size and several small TNT charges instead of gas inside the airbag inflator. The objective of this study is to validate the results of an UNDEX response analysis of one and two idealized airbag inflators by comparison with the results of shock tests in a small water tank. This comparison was performed using the multi-material Arbitrary Lagrangian-Eulerian formulation and fluid-structure interaction algorithm. The number, size, vertical distance from the nozzle outlet, detonation velocity, and lighting times of small TNT charges were determined. Through mesh size convergence tests, the UNDEX response analysis and idealized airbag inflator modeling were validated. |
topic |
Alternative explosion energy source Underwater explosion (UNDEX) response analysis Idealized airbag inflator Multi-material arbitrary Lagrangian-Eulerian (MMALE) formulation Fluid-Structure Interaction (FSI) algorithm |
url |
http://www.sciencedirect.com/science/article/pii/S2092678220300534 |
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