Mcraly Creep Behaviour Modelling By Means Of Finite-element Unit Cells And Self-consistent Constitutive Equations

U Hermosilla; M S A Karunaratne; I A Jones; T H Hyde; R C Thomson

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Mcraly Creep Behaviour Modelling By Means Of Finite-element Unit Cells And Self-consistent Constitutive Equations

机译：有限单元晶胞和自洽本构方程的Mcraly蠕变行为建模

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The MCrAlY bond coats (BCs) used in thermal barrier coatings (TBCs) undergo severe microstructural changes that affect their creep behaviour. One method to take into account the effect of the high-temperature degradation in the creep properties of these alloys is by means of unit cell calculations that reproduce the microstructure present in the alloy. However, this method is not suitable to be included in large-scale calculations and a self-consistent constitutive model, based on Eshelby's inclusion technique, is presented for that purpose, showing good numerical agreement. Results are compared with experimental data obtained for several MCrAlY BCs.

机译：用于热障涂层（TBC）的MCrAlY粘结涂层（BCs）经历了严重的微结构变化，从而影响了它们的蠕变行为。考虑到这些合金的蠕变性能中高温降解的影响的一种方法是借助于晶胞计算，该计算再现了合金中存在的微观结构。但是，该方法不适合包含在大规模计算中，为此目的，基于埃舍尔比的包含技术，提出了一个自洽本构模型，表明了良好的数值一致性。将结果与针对几种MCrAlY BC的实验数据进行比较。

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来源
《Proceedings of the institution of mechanical engineers》 |2009年第l1期|41-51|共11页
作者
U Hermosilla; M S A Karunaratne; I A Jones; T H Hyde; R C Thomson;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
mcraly; creep; unit-cell; eshelby; finite element; UMAT;

机译：mcraly;蠕变;晶胞;eshelby;有限元;UMAT;

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1. MCrAlY creep behaviour modelling by means of finite-element unit cells and self-consistent constitutive equations [J] . U Hermosilla, M S A Karunaratne, I A Jones, Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications . 2009,第1期

机译：MCrAlY蠕变行为建模的有限元单元格和自洽本构方程
2. Self-consistent Constitutive Modeling of the Creep Damage Behaviour of Nickel-base Directionally Solidified Superalloys with Different Grain Orientations [J] . Zhufeng Yue, Zhenzhou Lu Journal of Materials Science & Technology . 1998,第1期

机译：不同晶粒取向镍基定向凝固高温合金蠕变损伤行为的自洽本构模型
3. Determination of the relationship between microstructure and constitutive behaviour of nodular cast iron with a unit cell model [J] . L Collini, G Nicoletto The Journal of Strain Analysis for Engineering Design . 2005,第2期

机译：用晶胞模型确定球墨铸铁的显微组织与本构行为之间的关系
4. Development of constitutive equations for creep damage behaviour under multi-axial states of stress [C] . Q. Xu International Conference on Damage and Fracture Mechanics . 2001

机译：多轴应力下蠕变损伤行为的组成方程的发展
5. Creep-fatigue modelling in structural steels using empirical and constitutive creep methods implemented in a strip-yield model. [D] . Andrews, Benjamin J. 2014

机译：使用在带钢屈服模型中实现的经验和本构蠕变方法对结构钢进行蠕变疲劳建模。
6. A universal Bayesian inference framework for complicated creep constitutive equations [O] . Yoh-ichi Mototake, Hitoshi Izuno, Kenji Nagata, -1

机译：复杂蠕变本构方程的通用贝叶斯推理框架
7. Stress Relaxation Behaviour and Creep Constitutive Equations of SA302Gr.C Low-Alloy Steel [O] . Wenfei Shen, Chi Zhang, Liwen Zhang, 2018

机译：SA302GR.C低合金钢的应力松弛行为和蠕变本构型方程
8. Constitutive Equations for Damaged Creeping Materials [R] . Rodin, G. J. 1986

机译：损伤爬行材料的本构方程

Mcraly Creep Behaviour Modelling By Means Of Finite-element Unit Cells And Self-consistent Constitutive Equations

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