Lifetime Assessment for a Cracked Compressor Disk Based on the Plastic Stress Intensity Factor

被引：0

作者：

Shlyannikov V.N. ^{[1
]}

Yarullin R.R. ^{[1
]}

Ishtyryakov I.S. ^{[1
]}

机构：

[1] Kazan Scientific Center, Russian Academy of Sciences, ul. Lobachevskogo 2/31, Kazan

来源：

Russian Aeronautics | 2020年 / 63卷 / 01期

基金：

俄罗斯科学基金会;

关键词：

compressor disk; fatigue crack growth rate; fracture process zone; lifetime; plastic stress intensity factor;

D O I：

10.3103/S1068799820010031

中图分类号：

学科分类号：

摘要：

Based on a new fracture mechanics parameter, this study is concerned with assessment of the lifetime of a cracked aircraft gas turbine engine compressor disk operating under low cyclic loading conditions. In combination with the elastic-plastic properties of the VT3-1 titanium alloy, various combinations of angular velocity, temperature, surface flaw form and size are considered. A lifetime prediction model, which is based on the fracture process zone size and plastic stress intensity factor (SIF), is proposed. The durability of the compressor disk is predicted on the basis of SIF distributions obtained from elastic and plastic crack growth models. © 2020, Allerton Press, Inc.

引用

页码：14 / 24

页数：10

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