Феноменологическая модель пробивания керамических преград

И.Ф. Кобылкин, А.А. Горбатенко

ISSN 0236-3941. Вестник МГТУ им. Н.Э. Баумана. Сер. Машиностроение. 2016. № 6

Просьба ссылаться на эту статью следующим образом:

Кобылкин И.Ф., Горбатенко А.А. Феноменологическая модель пробивания керамиче-

ских преград // Вестник МГТУ им. Н.Э. Баумана. Сер. Машиностроение. 2016. № 6.

C. 62–73. DOI: 10.18698/0236-3941-2016-6-62-73

PHENOMENOLOGICAL MODEL OF PERFORATION CERAMIC PLATES

I.F. Kobylkin

kobylkin_ivan@mail.ru

A.A. Gorbatenko

selenta92@mail.ru

Bauman Moscow State Technical University, Moscow, Russian Federation

Abstract

Keywords

The research proposes a model of perforation the ceramic plates

with the widening taper breach. The model allows us to deter-

mine the taper angle, that depends on the strength characteristics

of ceramics and the ratio of the ceramic layer thickness and the

diameter of the firing pin. The study showed that the main

reason for such type of ceramic fracture is considerably lower

ceramics tensile strength compared to its compressive strength.

By using energetic fracture criterion, we developed a method for

calculating the limit velocity for penetrating the ceramic target.

Two-dimensional numerical simulation of the steel firing pins

impact on corundum targets showed a satisfactory agreement

between the calculated and experimentally obtained taper cracks

configurations. This agreement takes place only if the compres-

sive strength and tensile strength limit values are chosen in ac-

cordance with the developed model recommendations

Ceramic target, conical crack,

penetration, limit velocity,

energetic fracture criterion

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