In order to analyze the effect of bend twist coupling(BTC)of large wind turbine blade, the blade was simplified to a symmetric un-uniform laminate plates, the influence of coupling area on bend-twist coupling effect was studied by numerical analysis method. By introducing symmetric off-axis orientations in different locations of the five plates, the static deformations to perform the coupling feature were analyzed under the concentrated force. A new method was proposed in this paper to quantitatively describe the bending-torsional coupling performance of laminates using modal assurance criterior(MAC). The results show that coupling effect of laminates coupled in the central region were significant at low-order vibrations, while the coupling effect of laminates coupled near the end was more obvious at higher-order modes.
ZHANG Ying
,
AN Liqiang
,
WANG Zhangqi
. Numerical simulation of bend-twist coupling properties of laminate plates[J]. Journal of Hebei University(Natural Science Edition), 2021
, 41(3)
: 231
-237
.
DOI: 10.3969/j.issn.1000-1565.2021.03.002
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