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Study on vibration isolation performance of concave structure
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Xue YANG1, 2, Wentao ZOU3, 4, Quanyuan LIU4, Mingge YAO5, Hongping HU4, Yuantai HU4
Journal of Vibration Engineering | 2025, 38(7) : 1396 - 1404
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Journal of Vibration Engineering | 2025, 38(7): 1396-1404
Study on vibration isolation performance of concave structure
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Xue YANG1, 2, Wentao ZOU3, 4, Quanyuan LIU4, Mingge YAO5, Hongping HU4, Yuantai HU4
Affiliations
  • 1.Southwest Institute of Electronic Technology，Chengdu 610000，China
  • 2.Sichuan Provincial Engineering Laboratory of Environmental Adaptability Technology for Aerospace Electronic Equipment，Chengdu 610000，China
  • 3.System Design Institute of Hubei Aerospace Technology Academy，Wuhan 430040，China
  • 4.School of Aerospace Engineering，Huazhong University of Science and Technology，Wuhan 430074，China
  • 5.Tianjin Aerospace Reliability Technology Co., Ltd., Wuhan 430074，China
Published: 2025-07-10 doi: 10.16385/j.cnki.issn.1004-4523.202305052
Outline
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In view of the light weight，small space and small amplitude requirements of electronic equipment for vibration isolation structure，the paper focuses on the isolation of low frequency vibration from its base. By introducing the cross-braced configuration，a concave cross braced plate model is proposed，the influence law of structural parameters on its low frequency vibration isolation performance is illustrated. Then，based on the design concept of cross-bracing，a concave sandwich phononic crystal structure model is proposed，and the influence mechanism of geometric parameters on its frequency response characteristics is revealed. After geometric parameter optimization and experimental verification，the vibration isolation structure model has excellent vibration attenuation characteristics in the low and wide frequency band. In 100~500 Hz，the attenuation efficiency of acceleration power spectral density above 70%. In 35~80 Hz，and 500~2000 Hz，the attenuation efficiency of acceleration power spectral density above 40%. Working displacement of the vibration isolation structure under 3 times standard deviation confidence is less than 3 mm. Therefore，it is suitable for the isolation of low frequency random vibration. In addition，the model has broad application prospects owing to its advantages of light weight，small volume，large bearing capacity and strong universality.

low frequency vibration isolation  /  phononic crystal  /  negative Poisson’s ratio  /  concave structure  /  cross braced
Xue YANG, Wentao ZOU, Quanyuan LIU, Mingge YAO, Hongping HU, Yuantai HU. Study on vibration isolation performance of concave structure[J]. Journal of Vibration Engineering, 2025 , 38 (7) : 1396 -1404 . DOI: 10.16385/j.cnki.issn.1004-4523.202305052
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Article Info
doi: 10.16385/j.cnki.issn.1004-4523.202305052
  • Receive Date：2023-05-30
  • Online Date：2026-02-09
  • Published：2025-07-10
Article Data
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History
  • Received：2023-05-30
  • Revised：2023-11-03
Funding
Affiliations
    1.Southwest Institute of Electronic Technology，Chengdu 610000，China
    2.Sichuan Provincial Engineering Laboratory of Environmental Adaptability Technology for Aerospace Electronic Equipment，Chengdu 610000，China
    3.System Design Institute of Hubei Aerospace Technology Academy，Wuhan 430040，China
    4.School of Aerospace Engineering，Huazhong University of Science and Technology，Wuhan 430074，China
    5.Tianjin Aerospace Reliability Technology Co., Ltd., Wuhan 430074，China
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表12种不同金属材料的力学参数
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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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