Solutions to improve novel multiple configurations

Liu, Hua; Li, Mingsuo; Zhu, Ronggang; zhou, Liwei

doi:10.1117/12.2600599

Cited by 1 publication

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“…Gas generation devices based on pyrotechnic technology are widely used in the aerospace and defense industries, including airbag inflation, lifesaving seat ejection, rocket satellite separation, and robotic arm deployment 1,2 . These pyrotechnic devices consist of a complex series of components and rely on energetic materials such as gunpowder or propellants as independent energy sources.…”

Section: Introductionmentioning

confidence: 99%

Influence of multiple structural parameters on buffer performance of a thin‐walled circular tube based on the coupling modeling technique

Jiang

Wang

2022

Int Journal of Mech Sys Dyn

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Pyrotechnic devices are widely used in the aerospace and defense industries. However, these devices generate high‐frequency and high‐amplitude shock responses during their use, compromising safe operation of the system. In this paper, the application of a thin‐walled circular tube as the energy absorber in pyrotechnic devices is investigated. To accurately predict the shock load and the buffer performance of the thin‐walled circular tube, a coupled model connecting the energetic material combustion and finite element simulation is established. The validity of the coupled model is verified by comparing with experiments. Then, the collapse mechanism of the thin‐walled circular tube is studied, and the influence of multiple structural parameters on its buffer performance is analyzed. The results show that the thin‐walled circular tube effectively reduces the shock overload. The maximum shock overload reduced from 572 612g to 11 204g in the studied case. The structural parameters of the thin‐walled circular tube mainly affect the deformation process and the maximum shock overload. The order of importance of structural parameters to the maximum shock overload is determined, among which the wall thickness has the most significant effect.

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Section: Introductionmentioning

confidence: 99%