Numerical simulation of bend-twist coupling properties of laminate plates

doi:10.3969/j.issn.1000-1565.2021.03.002

Journal of Hebei University(Natural Science Edition) ›› 2021, Vol. 41 ›› Issue (3): 231-237.DOI: 10.3969/j.issn.1000-1565.2021.03.002

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Numerical simulation of bend-twist coupling properties of laminate plates

ZHANG Ying^1,2, AN Liqiang¹, WANG Zhangqi¹

1.School of Energy Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China; 2.College of Civil Engineering and Architecture, Hebei University, Baoding 071002, China

Received:2020-10-01 Published:2021-05-28

Abstract

Abstract: 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.

Key words: laminate plate, modal characteristic, bend twist coupling, modal identification matrix

CLC Number:

TH213.3

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.

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Numerical simulation of bend-twist coupling properties of laminate plates

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