Research on vibration characteristics of composite material laminated panel with fiber angle curve variation under different laying numbers

doi:10.19936/j.cnki.2096-8000.20230128.005

Abstract

Abstract: Compared with the traditional composite fiber linear laying laminate, the fiber angle curve can change the stress distribution of the laminate and improve the rigidity and load-bearing capacity. For the purpose of damping, fiber curve laminates with different fiber curve angles and different layup quantities were designed and prepared. Modal tests were used to compare and analyze the influence of fiber curve angle and layup quantity on the vibration characteristics of laminates. The results show that when the number of layers is the same, and when the fiber curve angle changes to ±<60|75>,the first three natural frequencies of the laminate have reached the optimal state; when the fiber curve angle changes to ±<45|60>, the damping ratio of the laminate is the largest. When the fiber curve angle changes the same, by comparing the influence of the three sets of three layers of 8, 12 and 16 layers on the natural frequency of the laminate, when the number of laminates is in the range of 8 to 16 layers, when the first two natural frequencies presents a trend of first increasing and then decreasing. The work done can provide a reference for the vibration optimization of the fiber curve laminate.

Key words: composite laminate, fiber curve angle, number of layers, natural frequency, damping ratio

CLC Number:

TB332

YE Fan, WANG Xianfeng, WANG Dongli, GAO Tiancheng, ZHANG Haotian, FENG Tianyang. Research on vibration characteristics of composite material laminated panel with fiber angle curve variation under different laying numbers[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(1): 44-54.

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