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UPON CHARACTERISTICS AND EFFECTS OF DEBRIS CLOUD BY NUMERICAL SIMULATION OF THE HIGH VELOCITY IMPACT USING SPH METHOD


NĂSTĂSESCU VASILE
MILITARY TECHNICAL ACADEMY, BUCHAREST, ROMANIA

Issue:

MOCM, Number 15, Volume III

Section:

Issue No. 15 - Volume III (2009)

Abstract:

This paper presents some results of the researching work of the author regarding to the high velocity impact. Characteristics aspects were studied by Finite Element method (FEM) and by Smoothed Particle Hydrodynamics (SPH). The most fitted numerical method for studding of these aspects is SPH. This is a meshless Lagrangian numerical technique used to model the problems where large mesh distortions occur.

Nowadays, the risk of collision between spacecraft and orbital debris is becoming more and more important, so such a study is a necessary one. The conclusions are useful for the aircraft specialists but, in the same time, the conclusions and the calculus model are useful for the users of this numerical method - SPH - which is more and more used in mechanical engineering.

In this paper, the impact velocity was 5 km/s, the projectile was represented by a sphere, of aluminium, with a diameter of 6 mm and the target was a plane plate having a thickness of 1 mm. The effect of debris cloud was illustrated using one and two plate, both of aluminium, or the first plate of aluminium and the second plate of steel.

Keywords:

Smoothed Particle Hydrodynamics (SPH), Debris Cloud, Impact.

Code [ID]:

MOCM200915V03S01A0007 [0002738]


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