期刊
MATERIALS
卷 14, 期 11, 页码 -出版社
MDPI
DOI: 10.3390/ma14113032
关键词
functionally graded materials; peridynamic method; integral equivalence; crack growth simulation
类别
资金
- National Natural Science Foundation of China [11802214, 11972267]
- Fundamental Research Funds for the Central Universities [WUT: 2018IB006, WUT: 2019IVB042]
An improved peridynamic model for Functionally Graded Materials (FGMs) is proposed in this study, which can better reflect the gradient change of material properties. Research results demonstrate the effectiveness of this method in capturing the material behavior.
Functionally graded materials (FGMs) are widely used in the aerospace industry, especially for the thermal protection shields of aerospace vehicles. Studies show that the initiation and expansion of micro-cracks are important factors that adversely affect the service life of these shields. Based on the peridynamic theory of bonds, an improved peridynamic model is proposed in the present study for FGMs. In the proposed model, integral equivalence is applied to calculate the required material parameters. Obtained results reveal that this method can better reflect the gradient change of material properties.
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