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Vibration characteristics analysis of multi-dimensional vibration isolation system with joint clearance
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Xiang GAO1, Feng SHI2, Jun-chuan NIU3, Rui-chun DONG1
Journal of Vibration Engineering | 2024, 37(3) : 448 - 456
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Journal of Vibration Engineering | 2024, 37(3): 448-456
Vibration characteristics analysis of multi-dimensional vibration isolation system with joint clearance
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Xiang GAO1, Feng SHI2, Jun-chuan NIU3, Rui-chun DONG1
Affiliations
  • 1School of Mechanical Engineering, Shandong University of Technology, Zibo 255000, China
  • 2CHINALCO Wancheng Shandong Construction Co., Ltd., Zibo 255000, China
  • 3School of Mechanical Engineering, Shandong University, Jinan 250061, China
Published: 2024-03-28 doi: 10.16385/j.cnki.issn.1004-4523.2024.03.009
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Aiming at reducing multi-dimensional vibration experienced by vehicle-mounted precise instrument，a multi-dimensional passive vibration isolator is built based on parallel mechanism with joint clearance. The 4-PUU parallel mechanism with axes 45° offset value，which exhibits three translations and one rotation characteristics is synthesized by GF set type synthesis theory. The springs and viscous dampers are added on the active joints，meanwhile the kinematics and dynamics of the multi-dimensional vibration isolator are established. The vibration isolation capability with different values of joint clearance under harmonic and road random excitations is addressed. The results demonstrate that the proposed multi-dimensional isolator with joint clearance can inhibit multi-dimensional vibration in time and frequency domain significantly. As the value of joint clearance increasing，the vibration isolation capability degenerates，especially in x direction. Meanwhile，the first order resonance peak is sensitive to joint clearance，which shifts to low frequency range.

multi-dimensional vibration isolation system  /  parallel mechanism  /  joint clearance  /  vibration isolation performance
Xiang GAO, Feng SHI, Jun-chuan NIU, Rui-chun DONG. Vibration characteristics analysis of multi-dimensional vibration isolation system with joint clearance[J]. Journal of Vibration Engineering, 2024 , 37 (3) : 448 -456 . DOI: 10.16385/j.cnki.issn.1004-4523.2024.03.009
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Year 2024 volume 37 Issue 3
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Article Info
doi: 10.16385/j.cnki.issn.1004-4523.2024.03.009
  • Receive Date：2022-06-21
  • Online Date：2026-02-10
  • Published：2024-03-28
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  • Received：2022-06-21
  • Revised：2022-10-26
Funding
Affiliations
    1School of Mechanical Engineering, Shandong University of Technology, Zibo 255000, China
    2CHINALCO Wancheng Shandong Construction Co., Ltd., Zibo 255000, China
    3School of Mechanical Engineering, Shandong University, Jinan 250061, 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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