UNIQUE FAILURE CRITERION FOR CHARACTERIZING THE FRACTURE OF PROPELLANTS

被引：10

作者：

GLEDHILL, RA

KINLOCH, AJ

机构：

[1] Explosives and Rocket Motor Establishment (PERME), Waltham Abbey, Essex

来源：

PROPELLANTS AND EXPLOSIVES | 1979年 / 4卷 / 04期

关键词：

D O I：

10.1002/prep.19790040404

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The problem of crack growth in a nitrocellulose/nitroglycerin propellant has been studied employing a continuum fracture mechanics approach. Values of the stress‐intensity factor, Kc, at the onset of crack propagation have been ascertained and found to be dependent upon both the thickness of the specimen and the test temperature. By proposing that the value of Kc arises from the sum of a plane‐strain and a plane‐stress component a unique failure criterion, which is constant over a wide temperature range, has been identified. Namely, that crack propagation in the propellant occurs when the plane‐stress plastic‐zone at the crack tip attains a critical size. Copyright © 1979 Verlag GmbH & Co. KGaA, Weinheim

引用

页码：73 / 77

页数：5

共 11 条

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[10]

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