Models of Long-Term Brittle Fracture of Rods in Tension and Compression Under Creep Conditions

被引：2
|
作者：
Kobzar’ Y.M. [1 ]
机构：
[1] S. P. Timoshenko Institute of Mechanics, National Academy of Sciences of Ukraine, 3, Nesterov St., Kyiv
来源：
International Applied Mechanics | 2017年 / 53卷 / 04期
关键词：
brittle fracture; compression; fracture; fracture criteria; fracture model; long-term strength; tensile;
D O I：
10.1007/s10778-017-0828-0
中图分类号：
学科分类号：
摘要：
Fracture models based on the increasing density of material and the decreasing bearing mass of material in tension and compression, respectively, are proposed. The creep strain rates modeled using the most widespread version of the flow theory. An analytical approach allows obtaining an equation identical in all cases and relating Poisson’s ratio, time function, and rheological parameter. An algorithm for determining two last parameters based on creep testing is proposed. The expected time-to-fracture values of heat-resistant alloys are in good qualitative and quantitative agreement with the experimental data. © 2017, Springer Science+Business Media, LLC.
引用
收藏
页码：444 / 453
页数：9
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