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Influence of multiple delaminations on tensile performance of wind turbine blade spar caps
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Wen XIN1, 2, Bo ZHOU1, 3, Hui LI3, Zhihui GUO3, Lixin ZHANG1
Journal of Mechanical Strength | 2025, 47(10) : 96 - 104
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Journal of Mechanical Strength | 2025, 47(10): 96-104
• Experimental Research·Testing Technology •
Influence of multiple delaminations on tensile performance of wind turbine blade spar caps
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Wen XIN1, 2, Bo ZHOU1, 3, Hui LI3, Zhihui GUO3, Lixin ZHANG1
Affiliations
  • 1.School of Mechanical Engineering, Shenyang University of Technology, Shenyang 118070, China
  • 2.School of Mechanical Engineering, Liaoning Institute of Science and Technology, Benxi 117004, China
  • 3.School of Civil Engineering, Shenyang University of Technology, Shenyang 118070, China
Published: 2025-10-15 doi: 10.16579/j.issn.1001.9669.2025.10.011
Outline
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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.

Multiple delaminations  /  Wind turbine blade  /  Spar cap  /  Numerical simulation  /  Tensile strength
Wen XIN, Bo ZHOU, Hui LI, Zhihui GUO, Lixin ZHANG. Influence of multiple delaminations on tensile performance of wind turbine blade spar caps[J]. Journal of Mechanical Strength, 2025 , 47 (10) : 96 -104 . DOI: 10.16579/j.issn.1001.9669.2025.10.011
Funding
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  • 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 Project(23-407-3-21)
Appendix
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Year 2025 volume 47 Issue 10
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121
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Article Info
doi: 10.16579/j.issn.1001.9669.2025.10.011
  • Receive Date：2024-01-13
  • Online Date：2026-02-11
  • Published：2025-10-15
Article Data
Affiliations
History
  • Received：2024-01-13
  • Revised：2024-04-03
Funding
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 Project(23-407-3-21)
Affiliations
    1.School of Mechanical Engineering, Shenyang University of Technology, Shenyang 118070, China
    2.School of Mechanical Engineering, Liaoning Institute of Science and Technology, Benxi 117004, China
    3.School of Civil Engineering, Shenyang University of Technology, Shenyang 118070, China

Corresponding:

ZHOU Bo, E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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