A Framework of Integrated Creep-Fatigue Modeling

被引：0

作者：

Wu, X. ^{[1
]}

Yandt, S. ^{[1
]}

Zhang, Z. ^{[1
]}

机构：

[1] NRC Canada, IAR, SMPL, Ottawa, ON, Canada

来源：

PROCEEDINGS OF ASME TURBO EXPO 2009, VOL 4 | 2009年

关键词：

PLASTICITY;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A framework of integrated creep-fatigue (ICF) modeling is proposed based on the deformation decomposition rule that the total inelastic strain (in a polycrystalline material) consists of intragranular deformation (ID) and grain boundary sliding (GBS). With consideration of the respective deformation mechanisms, the resulting constitutive laws are given in 3D tensor forms such that fatigue damage (ID) and creep damage (GBS) are represented in different strain spaces, respectively Then, the creep-fatigue life consumption can be evaluated using a physics-based formula that captures the intricate interaction between a propagating fatigue crack and distributed creep damage, leading to final fracture

引用

页码：731 / 736

页数：6

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