Abstract: The analysis of material flow fields under the explosive collapse of two-layer metal/ceramics tubes is carried out. It is shown that the main reason for the absence of condensed jet is the explosion evaporation of the inner metal layer due to ultra-high temperatures in the compression area. For the case of the copper inner layer, very interesting and extraordinary features of the flows are observed. The non-stationarity of the process during the entire tube compression period attracts attention. The copper density at the point of contact decreases to 6.06 g/cm3 to the moment of time of 13 µs. This can only mean that copper is already partially vaporized before the collision point. To produce condensed hypervelocity jets, it is proposed to use a material of the inner layer with a high evaporation temperature. The analysis of properties of existing materials shows the perspective of using such refractory and plastic metals as niobium and tantalum as an inner layer of the tube.

Cite: Balagansky I. , Batraev I. , Ulianitsky V. , Plastinin A. , Shtertser A. , Vinogradov A.
Analysis of material flow fields under explosive collapse of two-layer metal/ceramic tubes
International Journal of Impact Engineering. 2021. V.156. P.103929. DOI: 10.1016/j.ijimpeng.2021.103929 WOS Scopus РИНЦ OpenAlex

Identifiers:

Web of science:	WOS:000687447300003
Scopus:	2-s2.0-85107843660
Elibrary:	46835105
OpenAlex:	W3172588031

Citing:

DB	Citing
Scopus	2
OpenAlex	2
Elibrary	2
Web of science	2

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