Odezva betonu na ráz projektilu ve formě střepin

Response of concrete to the impact of fragments simulating projectiles

článek v časopise - ostatní, Jost

en

The paper deals with the experimental reserch on responde of concrete blocks to the fragments simulating projectiles accelerated to the impact velocities up ro 1395 m/s. the results are interpreted using of some simple one-dimensional theories of penetration which were developed for the projectiles of shapes different from those used in our experiments. It has been found that the theory developed for the ogive-nose projectiles led to the best agreement with the experimental data.

Práce obsahuje výsledeky experimentálního studia účinků střepin definovaného tvaru na betonové terče. Dopadové rychlosti střepin byly voleny v rozsahu od 359 do 1395 m/s. Pro žádnou z těchto rychlostí nedošlo k úplnému poškození terče. Dopad střepin vyvolává vznik kráteru, což je poněkud odlišné od účinků jicných projektilů. Výsledky jsou vyhodnocovány pomocí jednorozměrné teorie, kdy se ukazuje velmi dobrý soulad mezi experimentálními a teoretickými hodnotami hloubky penetrace střepiny.

The paper deals with the experimental reserch on responde of concrete blocks to the fragments simulating projectiles accelerated to the impact velocities up ro 1395 m/s. the results are interpreted using of some simple one-dimensional theories of penetration which were developed for the projectiles of shapes different from those used in our experiments. It has been found that the theory developed for the ogive-nose projectiles led to the best agreement with the experimental data.

concrete, missile impact, theory of penetration, fragment simulating projestile, concrete strenght

2002

01.01.2001

1210-2717

8

1

63–69

7