Pyroshock Prediction of Ridge-Cut Explosive Bolts Using Hydrocodes
Pyrotechnic release devices such as explosive bolts are prevalent for many applications due to their merits: high reliability, high power-to-weight ratio, reasonable cost, and more. However, pyroshock generated by an explosive event can cause failures in electric components. Although pyroshock propa...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2016-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2016/1218767 |
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| author | Juho Lee Dae-Hyun Hwang Jae-Kyeong Jang Dong-Jin Kim YeungJo Lee Jung-Ryul Lee Jae-Hung Han |
| author_facet | Juho Lee Dae-Hyun Hwang Jae-Kyeong Jang Dong-Jin Kim YeungJo Lee Jung-Ryul Lee Jae-Hung Han |
| author_sort | Juho Lee |
| collection | DOAJ |
| description | Pyrotechnic release devices such as explosive bolts are prevalent for many applications due to their merits: high reliability, high power-to-weight ratio, reasonable cost, and more. However, pyroshock generated by an explosive event can cause failures in electric components. Although pyroshock propagations are relatively well understood through many numerical and experimental studies, the prediction of pyroshock generation is still a very difficult problem. This study proposes a numerical method for predicting the pyroshock of a ridge-cut explosive bolt using a commercial hydrocode (ANSYS AUTODYN). A numerical model is established by integrating fluid-structure interaction and complex material models for high explosives and metals, including high explosive detonation, shock wave transmission and propagation, and stress wave propagation. To verify the proposed numerical scheme, pyroshock measurement experiments of the ridge-cut explosive bolts with two types of surrounding structures are performed using laser Doppler vibrometers (LDVs). The numerical analysis results provide accurate prediction in both the time (acceleration) and frequency domains (maximax shock response spectra). In maximax shock response spectra, the peaks due to vibration modes of the structures are observed in both the experimental and numerical results. The numerical analysis also helps to identify the pyroshock generation source and the propagation routes. |
| format | Article |
| id | doaj-art-2d8cf5233aa44ce0811d8d9592bf181c |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-2d8cf5233aa44ce0811d8d9592bf181c2025-08-20T03:55:00ZengWileyShock and Vibration1070-96221875-92032016-01-01201610.1155/2016/12187671218767Pyroshock Prediction of Ridge-Cut Explosive Bolts Using HydrocodesJuho Lee0Dae-Hyun Hwang1Jae-Kyeong Jang2Dong-Jin Kim3YeungJo Lee4Jung-Ryul Lee5Jae-Hung Han6Department of Aerospace Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of KoreaDepartment of Aerospace Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of KoreaDepartment of Aerospace Engineering, Chonbuk National University, 567 Baekje-daero, Duckjin-gu, Jeonju, Jeonbuk 54896, Republic of KoreaEnergetic Materials & Pyrotechnics Department, Defence R&D Center, Hanwha Corporation, 99 Oesam-ro-8-Beon-gil, Yuseong-gu, Daejeon 34060, Republic of KoreaAdvanced Propulsion Technology Center, The 4th R&D Institute, Agency for Defense Development, Yoseong, P.O. Box 35, Yuseong-gu, Daejeon 34186, Republic of KoreaDepartment of Aerospace Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of KoreaDepartment of Aerospace Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of KoreaPyrotechnic release devices such as explosive bolts are prevalent for many applications due to their merits: high reliability, high power-to-weight ratio, reasonable cost, and more. However, pyroshock generated by an explosive event can cause failures in electric components. Although pyroshock propagations are relatively well understood through many numerical and experimental studies, the prediction of pyroshock generation is still a very difficult problem. This study proposes a numerical method for predicting the pyroshock of a ridge-cut explosive bolt using a commercial hydrocode (ANSYS AUTODYN). A numerical model is established by integrating fluid-structure interaction and complex material models for high explosives and metals, including high explosive detonation, shock wave transmission and propagation, and stress wave propagation. To verify the proposed numerical scheme, pyroshock measurement experiments of the ridge-cut explosive bolts with two types of surrounding structures are performed using laser Doppler vibrometers (LDVs). The numerical analysis results provide accurate prediction in both the time (acceleration) and frequency domains (maximax shock response spectra). In maximax shock response spectra, the peaks due to vibration modes of the structures are observed in both the experimental and numerical results. The numerical analysis also helps to identify the pyroshock generation source and the propagation routes.http://dx.doi.org/10.1155/2016/1218767 |
| spellingShingle | Juho Lee Dae-Hyun Hwang Jae-Kyeong Jang Dong-Jin Kim YeungJo Lee Jung-Ryul Lee Jae-Hung Han Pyroshock Prediction of Ridge-Cut Explosive Bolts Using Hydrocodes Shock and Vibration |
| title | Pyroshock Prediction of Ridge-Cut Explosive Bolts Using Hydrocodes |
| title_full | Pyroshock Prediction of Ridge-Cut Explosive Bolts Using Hydrocodes |
| title_fullStr | Pyroshock Prediction of Ridge-Cut Explosive Bolts Using Hydrocodes |
| title_full_unstemmed | Pyroshock Prediction of Ridge-Cut Explosive Bolts Using Hydrocodes |
| title_short | Pyroshock Prediction of Ridge-Cut Explosive Bolts Using Hydrocodes |
| title_sort | pyroshock prediction of ridge cut explosive bolts using hydrocodes |
| url | http://dx.doi.org/10.1155/2016/1218767 |
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