Study of initiator's shock-resistibility through impact using hopkinson pressure bar

Qiong Deng, Yulong Li, Tao Suo, Chunlin Chen, Xingmin Chang

科研成果: 书/报告/会议事项章节会议稿件同行评审

1 引用 (Scopus)

摘要

This paper attempted to study the properties of Slapper detonator non-energetic elements through exerting impact on them by Hopkinson Pressure Bar and evaluating the acceleration that samples received in accordance with one-dimensional stress wave theory. The results showed that the velocity pulse width could be controlled and acceleration pulse width be improved by varying the pulse shaper material and strike bar length. And the critical acceleration causing the failure of the initiator was closely connected with acceleration pulse width as well as acceleration amplitude. When the strike bar length were 126 mm, 190 mm, 270 mm and 460 mm, the acceleration pulse width were 58 μs, 93 μs, 130 us and 160 μs, respectively, and the critical acceleration causing the failure of the initiator were about 240 000 g, 130 000 g, 74 000 g and 72 000 g, respectively. The accurateness and reliability of acceleration value was accredited to the methods of changing sampling frequency, smoothing velocity and acceleration curve, and fitting curve. The FEM analog simulation was also conducted by using the LS-DYNA finite element program. Good agreements were achieved between the acceleration curve and the simulation results.

源语言英语
主期刊名Advances in Fracture and Materials Behavior - Selected, peer reviewed papers of the Seventh International Conference on Fracture and Strength of Solids (FEOFS2007)
出版商Trans Tech Publications
401-406
页数6
ISBN(印刷版)0878493999, 9780878493999
DOI
出版状态已出版 - 2008
活动7th International Conference on Fracture and Strength of Solids, FEOFS 2007 - Urumqi, 中国
期限: 27 8月 200729 8月 2007

出版系列

姓名Advanced Materials Research
33-37 PART 1
ISSN(印刷版)1022-6680

会议

会议7th International Conference on Fracture and Strength of Solids, FEOFS 2007
国家/地区中国
Urumqi
时期27/08/0729/08/07

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