期刊
COMPOSITE STRUCTURES
卷 179, 期 -, 页码 50-60出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2017.07.032
关键词
Functionally graded sandwich; Doubly-curved shallow shell; Free vibration; New shear deformation theory
资金
- National Natural Science Foundation of China [11472056, 11290152]
Free vibration of the functionally graded material (FGM) sandwich doubly-curved shallow shells under simply supported conditions is presented. Three common types of the shell, namely, the shell with homogeneous hardcore and FGM facesheet (type A), the shell with homogeneous softcore and FGM facesheet (type B) and the shell with FGM core and homogeneous facesheet (type C), are discussed. The dynamics model is derived according to a new shear deformation theory with stretching effects. The dimensionless natural frequency is obtained by Navier method. Numerical examples of the FGM sandwich doubly-curved shallow shells are provided for different gradient material parameters, core thicknesses, radii of curvature, aspect ratios, side-to-thickness ratios and vibration modes to demonstrate the accuracy of the present theory. (C) 2017 Elsevier Ltd. All rights reserved.
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