Numerical study on separation shock characteristics of pyrotechnic separation nuts
Numerical study on separation shock characteristics of pyrotechnic separation nuts
复制标题
烟火式分离螺母分离冲击特性数值研究
DOI:
10.1016/j.actaastro.2018.07.040
复制
发表时间:
2018-10
影响因子:
3.5
通讯作者:
刘一志
中科院分区:
文献类型:
--
作者:
赵宏达;孙毅;丁继峰;刘一志
This paper establishes a finite element model of pyrotechnic separation nuts and simulates the whole separation process based on the explicit dynamic codes LS-dyna with Arbitrary Lagrange-Euler (ALE) algorithm. The separation shock generated in the unlocking process is analyzed in detail and the results reveal that the pyrotechnic explosion shock and strain energy shock are two sources for the whole separation shock. Besides that, the influence of prestress on the separation shock and its two shock sources is also researched. The results show that the prestress could strengthen all three shocks, especially the strain energy release shock. This paper also compares the shock response spectrum (SRS) of the three shocks and finds that the SRS of separation shock is equal to the envelope of the SRS of pyrotechnic explosion shock and strain energy release shock. In the model of this paper, the pyrotechnic explosion shock plays a dominant role in the frequency range of 100 Hz to 10 KHz. The conclusions got in this work are helpful to insight the mechanism of separation shock and can provide a reference for the design of separation nuts.
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DOI:
10.2514/6.2000-3405
发表时间:
2000-07
期刊:
--
影响因子:
--
作者:
S. Ben-Shmuel
通讯作者:
S. Ben-Shmuel
影响因子:
5.6
作者:
Wang Xixiong;Qin Zhaoye;Ding Jifeng;Chu Fulei
通讯作者:
Chu Fulei
影响因子:
5.6
作者:
Juho Lee;Jae-Hung Han;Yeungjo Lee;Hyoungjin Lee
通讯作者:
Juho Lee;Jae-Hung Han;Yeungjo Lee;Hyoungjin Lee
影响因子:
7.2
作者:
N. Smirnov;V. Betelin;R. M. Shagaliev;V. Nikitin;I. Belyakov;Yu.N. Deryuguin;S. Aksenov;D. A. Korchazhkin
通讯作者:
N. Smirnov;V. Betelin;R. M. Shagaliev;V. Nikitin;I. Belyakov;Yu.N. Deryuguin;S. Aksenov;D. A. Korchazhkin
影响因子:
5.6
作者:
Jung‐Ryul Lee;C. Chia;C. Kong
通讯作者:
Jung‐Ryul Lee;C. Chia;C. Kong