Numerical research of the perforation of targets by ice impactors at different temperatures

Gennady N Bogomolov,Maxim Yu Orlov,Victor P Glazyrin

doi:10.1051/matecconf/201711001031

Gennady N Bogomolov, Maxim Yu Orlov + Show 1 more

Open Access

https://doi.org/10.1051/matecconf/201711001031

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Abstract

In the present work, the process of interaction of ice impactors of spherical shape with targets of aluminum alloy and asbotextolite has been numerically investigated. The initial temperature of the impactors was set from 0 to 500° C. The speed of the impactors was set in the range from 500 m/s to 1500 m/s. The behavior of the medium was described from the general positions of the mechanics of continuous media and corresponded to modern concepts of the destruction of solids under load. The material was considered as isotropic, elastoplastic, compressible, porous medium. The equation of state is chosen in the Walsh form. The problem was solved in a two-dimensional formulation for the case of axial symmetry. The calculations were carried out using the Lagrangian technique of computer simulation, which takes into account the fragmentation of the material in shear and shear failure. The current configurations of the impactor-target and the velocity of the leading fragments are obtained when penetrating the targets.

Highlights

The relevance of research into the interaction of ice impactors of spherical shape with targets of aluminum alloy and asbestos cloth is caused by the extensive use of the targets in question when creating new models of aviation and rocket and space technology
The mathematical model of ice behavior should take into account the dependence of strength physical-mechanical characteristics on temperature
The behavior of materials is described by the basic system of equations of continuum mechanics, i.e. Equations of continuity, motion and energy, written in independent Lagrangian variables [5, 6]

Summary

Introduction

The relevance of research into the interaction of ice impactors of spherical shape with targets of aluminum alloy and asbestos cloth is caused by the extensive use of the targets in question when creating new models of aviation and rocket and space technology. The problem of the interaction of ice impactors of a spherical shape with targets of an aluminum alloy and asbotextolite is solved. The current configurations of the impactortarget and the velocity of the leading fragments are obtained when penetrating the targets. This approach makes it possible to predict the behavior of promising impact-resistant protections in order to facilitate the search for the optimal design variant

Mathematical model

Numerical simulation

Results

Conclusions