PREDICTION OF DURABILITY OF A FIBER BUNDLE UNDER UNIAXIAL TENSION ON THE BASIS OF THE THERMAL-FLUCTUATION MODEL OF ITS BRITTLE FRACTURE

被引：0

作者：

Shevelev, V. V. ^{[1
]}

机构：

[1] Russian Technol Univ, MIREA, Moscow, Russia

来源：

JOURNAL OF APPLIED MECHANICS AND TECHNICAL PHYSICS | 2023年 / 64卷 / 05期

关键词：

fragility; fracture; durability; dispersion; multielement structure; fiber bundle; stress; STOCHASTIC-MODEL; REGULARITIES; DEFORMATION; CRITERION;

D O I：

10.1134/S002189442305019X

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A model is proposed for assessing the durability of a bundle of identical fibers under brittle fracture in a tensile stress region located to the left of the Griffiths fracture threshold. It is shown that, in a specified stress range, the average durability and the dispersion of durability values increase indefinitely with a decreasing tensile stress. Estimates are obtained for the incubation period of durability, its confidence probability, and the lower limit of the number of elements of a bundle of identical fibers that guarantee the required durability of the bundle.

引用

页码：902 / 910

页数：9