Influence of multiple delaminations on tensile performance of wind turbine blade spar caps

XIN Wen; ZHOU Bo; LI Hui; GUO Zhihui; ZHANG Lixin

doi:DOI：10.16579/j.issn.1001.9669.2025.10.011

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Influence of multiple delaminations on tensile performance of wind turbine blade spar caps

·Experimental Research·Testing Technology· | 更新时间：2025-10-31

- Influence of multiple delaminations on tensile performance of wind turbine blade spar caps
- Journal of Mechanical Strength Vol. 47, Issue 10, Pages: 96-104(2025)
- 作者机构：
  
  1.沈阳工业大学机械工程学院，沈阳 118070
  2.辽宁科技学院机械工程学院，本溪 117004
  3.沈阳工业大学建筑与土木工程学院，沈阳 118070
- 作者简介：
  
  ZHOU Bo, E-mail: liguodapple@sina.com
- 基金信息：
  
  National Natural Science Foundation of China(52175105;52306264);Liaoning Province Science and Technology Plan Joint Fund Project(2023-MSLH-252);Basic Research Project of Higher Education Institutions of Liaoning Province(LJKMZ20220486;JYTQN2023446;JYTMS20231218);Shenyang Science and Technology Plan Project(23-407-3-21)
- DOI：DOI：10.16579/j.issn.1001.9669.2025.10.011
  CLC：
- Received：13 January 2024，
  
  Revised：2024-04-03，
  
  Published：15 October 2025
- 稿件说明：
移动端阅览
辛雯，周勃，李慧，等. 多分层对风电叶片主梁的抗拉性能影响研究［J］. 机械强度，2025，47（10）：96-104.

XIN Wen，ZHOU Bo，LI Hui，et al. Influence of multiple delaminations on tensile performance of wind turbine blade spar caps［J］. Journal of Mechanical Strength，2025，47（10）：96-104.
辛雯，周勃，李慧，等. 多分层对风电叶片主梁的抗拉性能影响研究［J］. 机械强度，2025，47（10）：96-104. DOI： DOI：10.16579/j.issn.1001.9669.2025.10.011.

XIN Wen，ZHOU Bo，LI Hui，et al. Influence of multiple delaminations on tensile performance of wind turbine blade spar caps［J］. Journal of Mechanical Strength，2025，47（10）：96-104. DOI： DOI：10.16579/j.issn.1001.9669.2025.10.011.

摘要

研究了不同形式多分层对叶片主梁层合板抗拉强度的影响规律。开展了含单分层和多分层层合板的静态拉伸测试，并采用连续损伤模型（Continuous Damage Model

CDM）和内聚力模型（Cohesive Zone Model

CZM）对其损伤过程及最终失效模式进行了数值分析，数值结果与试验值吻合性良好，总体误差在7%以内。建立了1.5 MW-40.3 m叶片主梁等效层合板数值模型，预测了不同形式的多分层对层合板抗拉强度的影响。研究结果表明，分层的排布形式、最大分层面积、分层面积阶梯差对抗拉强度均有影响，三角形多分层要高于倒三角形多分层层合板的抗拉强度，最大面积分层靠近叶片层合板近表面，对拉伸失效载荷影响较大。

Abstract

The influence of different multi-delamination forms on the tensile strength of blade spar cap laminates was studied. Static tensile tests were conducted on laminates with single and multiple delaminations. The continuous damage model (CDM) and cohesive zone model (CZM) were used to analyze the damage process and failure mode. The numerical results showed good agreement with test values

with an overall error rate below 7%. A numerical model of 1.5 MW-40.3 m blade spar cap equivalent laminates was established to predict the effect of different types of multi-delamination on the tensile strength. The results show that the arrangement

maximum area

and step difference of delaminations all have an impact on tensile strength. The tensile strength of triangular multi-delamination is higher than that of inverted triangular multi-delamination laminates

and the maximum delamination near the surface greatly affects the tensile failure load.

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Keywords

references

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