A Constitutive Model for In Situ Comminuted Silicon Carbide

被引：5

作者：

Anderson, Charles E., Jr. ^{[1
]}

Chocron, Sidney ^{[1
]}

Behner, Thilo ^{[2
]}

机构：

[1] SW Res Inst, Engn Dynam Dept, San Antonio, TX 78228 USA

[2] Fraunhofer Inst Kurzzeitdynam, Ernst Mach Inst, D-79104 Freiburg, Germany

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2009年 / 92卷 / 06期

关键词：

PENETRATION;

D O I：

10.1111/j.1551-2916.2009.02988.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Cylindrical hot-pressed silicon carbide (SiC) ceramic targets were predamaged before ballistic testing. The SiC was thermally shocked to introduce noncontiguous cracks, then additional damage was induced by load-unload cycling in an MTS machine while the ceramic specimen was confined in a 7075-T6 aluminum sleeve. Long gold rod penetration was measured as a function of impact velocity nu(P) over the approximate range of 1-3 km/s, with most data between 1.5 and 3 km/s. Penetration as a function of time was measured using multiple, independently timed flash X-rays. It was assumed that the penetration response of the damaged SiC could be represented by a Drucker-Prager constitutive model. Numerical simulations were used to estimate the constitutive constants. It was found that simulations could not be used to determine a unique set of constitutive constants within experimental data scatter.

引用

页码：1280 / 1286

页数：7

共 23 条

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