Finite element modeling of residual stress around holes in the thermal barrier coatings

被引：22
|
作者：
Jiang, Y. [1 ,2 ]
Xu, B. S. [1 ]
Wang, H. D. [1 ]
Lu, Y. H. [1 ]
机构：
[1] Natl Key Lab Remfg, Beijing 100072, Peoples R China
[2] Naval Flying Acad China, Huludao 1251000, Liaoning, Peoples R China
来源：
COMPUTATIONAL MATERIALS SCIENCE | 2010年 / 49卷 / 03期
关键词：
Thermal barrier coatings; Residual stress; Finite element method; GRADED ZRO2/NICOCRALY COATINGS;
D O I：
10.1016/j.commatsci.2010.05.057
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The distribution of residual stresses in the sprayed coating is discussed by finite element method (FEM). With the increasing of coating thickness, residual stresses in the coating tend to change from compressive to tensile, the stress distribution along the radius of the specimen is smoother, but the concentration near the edge of coating, especially near the edge of hole, is sharper, which lead to failure of the coating. The hole radius of specimens took great effect on the distribution of residual stress near the inner radius, however, little effect on the distribution near the outer radius. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：603 / 608
页数：6
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