Effect of tunneling cracks on structural property degradation of wind turbine blades

被引：7

作者：

Castro, Oscar ^{[1
]}

Branner, Kim ^{[1
]}

机构：

[1] Tech Univ Denmark, DTU Wind Energy, Frederiksborgvej 399, DK-4000 Roskilde, Denmark

来源：

COMPOSITE STRUCTURES | 2021年 / 268卷

关键词：

Wind turbine blades; Multi-scale structural approach; Continuum damage mechanics; Stiffness degradation; Tunneling cracks; STRESS-TRANSFER; FATIGUE; MODEL; EVOLUTION; GROWTH; STIFFNESS; AXIS;

D O I：

10.1016/j.compstruct.2021.113914

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In this study, a multi-scale structural approach is used to analyze the effect of tunneling cracks on the structural response of wind turbine blades. In this approach, a 2D finite-element-based cross-section analysis and a continuum damage mechanics model are combined to efficiently predict the variation in cross-section stiffnesses and natural frequencies of the blades as a function of the tunneling crack density. By applying this approach to an 86.35-meter wind turbine blade, it is shown how the level of variation of these structural properties depends not only on the degradation of the material properties due to the presence of tunneling cracks but also on the spatial characteristics of the different cross-section regions along the blade, such as spar caps, trailing-edge panels, etc.

引用

页数：14

共 48 条

[1] Damage propagation in non-crimp fabrics under bi-axial static and fatigue loading [J].

Adden, S ;

Horst, P .

COMPOSITES SCIENCE AND TECHNOLOGY, 2006, 66 (05) :626-633

[2] METHOD OF BIVARIATE INTERPOLATION AND SMOOTH SURFACE FITTING BASED ON LOCAL PROCEDURES [J].

AKIMA, H .

COMMUNICATIONS OF THE ACM, 1974, 17 (01) :18-20

[3]

Bak C., 2013, DTU 10 MW REFERENCE

[4]

Bak C., 2013, I0092 DTU

[5] Damage accumulation in quasi-isotropic graphite/epoxy laminates under constant-amplitude fatigue and block loading [J].

Bartley-Cho, J ;

Lim, SG ;

Hahn, HT ;

Shyprykevich, P .

COMPOSITES SCIENCE AND TECHNOLOGY, 1998, 58 (09) :1535-1547

[6] Analytical solution of the stresses in doubly tapered box girders [J].

Bertolini, P. ;

Taglialegne, L. .

EUROPEAN JOURNAL OF MECHANICS A-SOLIDS, 2020, 81 (81)

[7] Multi-material topology optimization of laminated composite beam cross sections [J].

Blasques, Jose Pedro ;

Stolpe, Mathias .

COMPOSITE STRUCTURES, 2012, 94 (11) :3278-3289

[8]

Branner K., 2019, P 22 INT C COMP MAT

[9]

Branner K., 2020, IOP C SER MAT SCI EN, V942, DOI [10.1088/1757-899x/942/1/012044012044, DOI 10.1088/1757-899X/942/1/012044012044]

[10] Prediction of the crack density evolution in multidirectional laminates under fatigue loadings [J].

Carraro, P. A. ;

Maragoni, L. ;

Quaresimin, M. .

COMPOSITES SCIENCE AND TECHNOLOGY, 2017, 145 :24-39

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