Collapse of a circular cavity in a solid layer under mechanical action
- 作者: Dubovik A.V.1
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隶属关系:
- N. N. Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences
- 期: 卷 17, 编号 3 (2024)
- 页面: 132-139
- 栏目: Articles
- URL: https://journal-vniispk.ru/2305-9117/article/view/277632
- DOI: https://doi.org/10.30826/CE24170313
- EDN: https://elibrary.ru/QMERSF
- ID: 277632
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详细
The numerical and analytical solution of the hydrodynamic problem of collapse of a cylindrical cavity in a freely spreading layer of viscoplastic substance under impact is presented. The assumption on the thinness of the layer (the thickness of the layer is much smaller than the size of the striker) allows one to reduce the solution of the two-dimensional boundary value problem to the integration of a system of two ordinary differential equations of the 1st order which is performed numerically. The calculation results obtained under the assumption of the constancy of the compression rate of the layer indicate high parameters of converging flows and the absence of their focusing during the collapse of the cavity, which is facilitated by the backpressure of gas in the cavity, the inhibitory effect of the contact friction of the layer on the surface of the impactor as well as the outflow of matter from the outer boundary of the impactor.
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作者简介
Alexander Dubovik
N. N. Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences
编辑信件的主要联系方式.
Email: a-dubovik@mail.ru
Doctor of Sciences in Physics and Mathematics, Professor, Leading Researcher
俄罗斯联邦, Moscow参考
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