Dynamic Fracture Analysis of Functional Gradient Material Coating Based on the Peridynamic Method
Functional gradient materials (FGMs) have tremendous potential due to their characteristic advantage of asymptotic continuous variation of their properties. When an FGM is used as a coating material, damage and failure of the interface with the substrate component can be effectively inhibited. In or...
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Online Access: | https://www.mdpi.com/2079-6412/9/1/62 |
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doaj-ee9b74636e574423bfdd8a168b4a334d2020-11-24T21:50:08ZengMDPI AGCoatings2079-64122019-01-01916210.3390/coatings9010062coatings9010062Dynamic Fracture Analysis of Functional Gradient Material Coating Based on the Peridynamic MethodYu Zhang0Zhanqi Cheng1Hu Feng2School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, ChinaSchool of Civil Engineering, Zhengzhou University, Zhengzhou 450001, ChinaSchool of Civil Engineering, Zhengzhou University, Zhengzhou 450001, ChinaFunctional gradient materials (FGMs) have tremendous potential due to their characteristic advantage of asymptotic continuous variation of their properties. When an FGM is used as a coating material, damage and failure of the interface with the substrate component can be effectively inhibited. In order to study the dynamic crack propagation in FGM coatings, a new method, peridynamics (PD), was used in the present study to simulate dynamic fractures of FGM coatings bonded to a homogeneous substrate under dynamic loading. The bond-based PD theory was employed to study crack propagation and branching in the FGM coating. The influences of the coating gradient pattern, loading, and the geometry and size of the structure on crack curving and propagation under impact loading were investigated. The numerical results show that different forms of the elastic modulus of graded material, the geometry of the structure, and the loading conditions have considerate effects on crack propagation in FGM coatings, but a specific form of elastic modulus had a limited effect on the dynamic fracture of FGM coating.https://www.mdpi.com/2079-6412/9/1/62peridynamicsfunctional graded materialcoatingcrack propagation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yu Zhang Zhanqi Cheng Hu Feng |
spellingShingle |
Yu Zhang Zhanqi Cheng Hu Feng Dynamic Fracture Analysis of Functional Gradient Material Coating Based on the Peridynamic Method Coatings peridynamics functional graded material coating crack propagation |
author_facet |
Yu Zhang Zhanqi Cheng Hu Feng |
author_sort |
Yu Zhang |
title |
Dynamic Fracture Analysis of Functional Gradient Material Coating Based on the Peridynamic Method |
title_short |
Dynamic Fracture Analysis of Functional Gradient Material Coating Based on the Peridynamic Method |
title_full |
Dynamic Fracture Analysis of Functional Gradient Material Coating Based on the Peridynamic Method |
title_fullStr |
Dynamic Fracture Analysis of Functional Gradient Material Coating Based on the Peridynamic Method |
title_full_unstemmed |
Dynamic Fracture Analysis of Functional Gradient Material Coating Based on the Peridynamic Method |
title_sort |
dynamic fracture analysis of functional gradient material coating based on the peridynamic method |
publisher |
MDPI AG |
series |
Coatings |
issn |
2079-6412 |
publishDate |
2019-01-01 |
description |
Functional gradient materials (FGMs) have tremendous potential due to their characteristic advantage of asymptotic continuous variation of their properties. When an FGM is used as a coating material, damage and failure of the interface with the substrate component can be effectively inhibited. In order to study the dynamic crack propagation in FGM coatings, a new method, peridynamics (PD), was used in the present study to simulate dynamic fractures of FGM coatings bonded to a homogeneous substrate under dynamic loading. The bond-based PD theory was employed to study crack propagation and branching in the FGM coating. The influences of the coating gradient pattern, loading, and the geometry and size of the structure on crack curving and propagation under impact loading were investigated. The numerical results show that different forms of the elastic modulus of graded material, the geometry of the structure, and the loading conditions have considerate effects on crack propagation in FGM coatings, but a specific form of elastic modulus had a limited effect on the dynamic fracture of FGM coating. |
topic |
peridynamics functional graded material coating crack propagation |
url |
https://www.mdpi.com/2079-6412/9/1/62 |
work_keys_str_mv |
AT yuzhang dynamicfractureanalysisoffunctionalgradientmaterialcoatingbasedontheperidynamicmethod AT zhanqicheng dynamicfractureanalysisoffunctionalgradientmaterialcoatingbasedontheperidynamicmethod AT hufeng dynamicfractureanalysisoffunctionalgradientmaterialcoatingbasedontheperidynamicmethod |
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1725885016464949248 |