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Optimized design of stiffened panels considering the twist angle error of stringers
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Dapeng ZHANG1, 2, Guanri LIU3, Baoshi YU1, 2, *, Yongjun LEI1, 2, Zhixiang WANG1, 2
Journal of National Niversity of Defense Technology | 2025, 47(6) : 157 - 167
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Journal of National Niversity of Defense Technology | 2025, 47(6): 157-167
• Aeronautical and Astronautical Science and Technology·Materials Science and Engineering •
Optimized design of stiffened panels considering the twist angle error of stringers
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Dapeng ZHANG1, 2, Guanri LIU3, Baoshi YU1, 2, *, Yongjun LEI1, 2, Zhixiang WANG1, 2
Affiliations
  • 1.College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
  • 2.Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Missions, Changsha 410073, China
  • 3.Beijing Institute of Aerospace Systems Engineering, China Academy of Launch Vehicle Technology, Beijing 100076, China
Published: 2025-12-28 doi: 10.11887/j.issn.1001-2486.23110026
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To meet the requirements of lightweight and low error sensitivity in the optimization design of stiffened panels, the optimization design of stiffened panels was carried out considering the twist angle error of stringers.The finite element model of post-buckling instability of stiffened panels under axial compression was established, and the sensitivity of the load-carrying capacity to the twist angle error on stringers and the distribution position of the torsional stringer was analyzed.On this basis, a sequential approximate optimization method based on surrogate model was proposed by using parallel sequential sampling strategy, and the lightweight design of stiffened panel was carried out under the influence of twist angle error of stringers.The optimized results show that, compared with the optimization design scheme without error influence, the optimization scheme considering the twist angle error of stringers has lower sensitivity to the twist angle error when the weight is reduced by more than 32%, which can effectively improve the reliability and engineering application value of the optimized structure.

stiffened panels  /  twist angle error of stringers  /  parallel sequential sampling  /  lightweight design
Dapeng ZHANG, Guanri LIU, Baoshi YU, Yongjun LEI, Zhixiang WANG. Optimized design of stiffened panels considering the twist angle error of stringers[J]. Journal of National Niversity of Defense Technology, 2025 , 47 (6) : 157 -167 . DOI: 10.11887/j.issn.1001-2486.23110026
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Year 2025 volume 47 Issue 6
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Article Info
doi: 10.11887/j.issn.1001-2486.23110026
  • Receive Date：2023-11-28
  • Online Date：2026-04-16
  • Published：2025-12-28
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  • Received：2023-11-28
Affiliations
    1.College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
    2.Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Missions, Changsha 410073, China
    3.Beijing Institute of Aerospace Systems Engineering, China Academy of Launch Vehicle Technology, Beijing 100076, China
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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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