拉伸及弯曲载荷作用下风电叶片主梁面外褶皱缺陷的失效预测研究

郭志辉; 李慧; 王珑; 周勃; 辛雯

doi:10.19912/j.0254-0096.tynxb.2023-2110

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太阳能学报 ›› 2024, Vol. 45 ›› Issue (9) : 586-594. DOI: 10.19912/j.0254-0096.tynxb.2023-2110

拉伸及弯曲载荷作用下风电叶片主梁面外褶皱缺陷的失效预测研究

郭志辉¹, 李慧¹, 王珑², 周勃¹, 辛雯³

作者信息 +

FAILURE PREDICTION OF OUT-OF-PLANE WRINKLE ON TENSILE AND FLEXURAL PROPERTIES OF WIND TURBINE BLADE SPAR CAP

Guo Zhihui¹, Li Hui¹, Wang Long², Zhou Bo¹, Xin Wen³

Author information +

文章历史 +

摘要

叶片主梁褶皱严重危及风力机运行安全,该文提出一种基于连续损伤力学（CDM）模型来预测含不同高宽比的面外褶皱单向板的失效方法。首先,基于ABAQUS建立5种含不同高宽比的面外褶皱的5层单向板数值分析模型,通过编写USDFLD子程序并采用连续壳单元（SC8R）进行拉伸失效载荷预测和渐进损伤失效历程研究,并与试验对比,验证该文分析方法的精准性。进一步,基于AeroDyn 2 MW-45.3 m叶片主梁厚度分布,建立3种含不同高宽比的面外褶皱的15层大厚度单向板的数值分析模型,为了探究剪切效应对层合板性能的影响,编写VUMAT子程序并采用三维Hashin准则分别预测拉伸载荷和弯曲载荷作用下,褶皱对主梁单向板抗拉与抗弯性能的影响规律。研究结果表明：褶皱的高宽比对单向板承载能力影响较大,随着褶皱高宽比增大,叶片主梁的抗拉和抗弯性能逐渐降低,并受单向板厚度方向应变ε₃₃和面外应变ε₁₃的耦合作用影响,在高应变区域出现分层,显著降低单向板的刚度和强度。

Abstract

In this paper, a method based on the continuous damage mechanics （CDM） model is proposed for predicting the failure of unidirectional laminates with out-of-plane wrinkles and varying aspect ratios. Initially, a numerical analysis model was established using ABAQUS to investigate five 5-layer laminates with different aspect ratios of out-of-plane wrinkles. The prediction of tensile failure load and progressive damage history were performed by programming the USDFLD subroutine and utilizing the continuous shell element （SC8R）. The accuracy of the proposed analysis method was validated through comparison with experimental results. Furthermore, a numerical analysis model was developed for fifteen layers of large-thickness unidirectional laminate with three types of out-of-plane wrinkles and various aspect ratios based on the thickness distribution of Aerodyn 2 MW-45.3 m blade spar cap. To examine the influence of shear effect on laminate performance, a VUMAT subroutine was implemented to predict the impact of wrinkles on tensile and bending properties using the 3D Hashin criterion. The results indicate that wrinkle aspect ratio significantly affects the bearing capacity of spar caps, as both tensile and flexural properties gradually decrease with increasing wrinkle aspect ratio for spar caps. Additionally, due to coupling effects between strain ε₃₃ in thickness direction and out-of-plane strain ε₁₃, stratification occurs in high-strain areas leading to significant reductions in stiffness and strength.

导出引用

郭志辉, 李慧, 王珑, 周勃, 辛雯. 拉伸及弯曲载荷作用下风电叶片主梁面外褶皱缺陷的失效预测研究[J]. 太阳能学报. 2024, 45(9): 586-594 https://doi.org/10.19912/j.0254-0096.tynxb.2023-2110

Guo Zhihui, Li Hui, Wang Long, Zhou Bo, Xin Wen. FAILURE PREDICTION OF OUT-OF-PLANE WRINKLE ON TENSILE AND FLEXURAL PROPERTIES OF WIND TURBINE BLADE SPAR CAP[J]. Acta Energiae Solaris Sinica. 2024, 45(9): 586-594 https://doi.org/10.19912/j.0254-0096.tynxb.2023-2110

中图分类号： TB332

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