期刊
MULTISCALE MODELING OF HETEROGENEOUS STRUCTURES
卷 86, 期 -, 页码 61-82出版社
SPRINGER-VERLAG BERLIN
DOI: 10.1007/978-3-319-65463-8_4
关键词
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资金
- German Research Foundation (DFG) within the International Research Training Group (IRTG) [1627]
- Spanish Ministry of Economy and Competitiveness [MAT2015-71036-P, MAT2015-71309-P]
- Andalusian Government [P11-TEP-7093, P12-TEP-1050]
Structures made of variable stiffness (VS) composites possess a rich design space for bistable configurations that demonstrate different values of curvatures and out-of-plane displacements. In this study, several VS composites are investigated which can yield cylindrical bistable shapes similar to those generated from unsymmetrical cross-plies. Such configurations have been found favorable as a component for certain morphing applications. A semi-analytical model based on the Rayleigh-Ritz approach is presented to calculate the thermally induced multistable shapes as well as the snap-through forces particularly taking into account the curvilinear paths of VS composites. A nonlinear finite element analysis is performed to check the accuracy of the semi-analytical method. Cylindrical shapes generated from VS laminates and the corresponding straight fiber cross-ply laminates are analyzed and compared. The snap-through forces are subsequently calculated and compared for different VS laminates and the straight fiber cross-ply. It is observed that certain VS composites have a significant reduction of snap-through forces but with a marginal difference in out-of-plane displacement as compared to the corresponding straight fiber cross-ply laminate.
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