期刊
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
卷 55, 期 10, 页码 1844-1854出版社
SCIENCE PRESS
DOI: 10.1007/s11433-012-4823-5
关键词
nanosized spherical inhomogeneity; surface/interface; dynamic stress concentrations; wave scattering
资金
- National Natural Science Foundation of China [11172185, 10972147]
- Natural Science Foundation of Hebei Province, China [A2010001052]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT0971]
In the design and optimization of nanocomposites, the surface/interface stress arising at the inhomogeneity-matrix boundary plays an important role in determining the strength of structures. In this paper, the effect of surface/interface stress on the dynamic stress around a spherical inhomogeneity subjected to asymmetric dynamic loads is investigated. The surface/interface stress effects are taken into account by introducing Gurtin-Murdoch surface/interface elasticity model. The analytical solutions to displacement potentials are expressed by spherical wave function and associated Legendre function. The dynamic stress concentration factors around the spherical nano-inhomogeneity are illustrated and analyzed. The effects of the incident wave number, and the material properties of the interface and inhomogeneity on the dynamic stress around the inhomogeneity are examined.
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