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Dynamical property analysis of gear system with mass eccentricity incorporating dynamic meshing parameters and time-varying backlash
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Lei HOU1, Jinzhou SONG1, Zeyuan CHANG1, Yi CHEN2, Yushu CHEN1
Journal of Vibration Engineering | 2025, 38(6) : 1335 - 1343
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Journal of Vibration Engineering | 2025, 38(6): 1335-1343
Dynamical property analysis of gear system with mass eccentricity incorporating dynamic meshing parameters and time-varying backlash
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Lei HOU1, Jinzhou SONG1, Zeyuan CHANG1, Yi CHEN2, Yushu CHEN1
Affiliations
  • 1.School of Astronautics，Harbin Institute of Technology，Harbin 150001，China
  • 2.School of Civil Engineering，Harbin Institute of technology，Harbin 150090，China
Published: 2025-06-10 doi: 10.16385/j.cnki.issn.1004-4523.2025.06.022
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Gear systems in precision machinery and aerospace applications are subjected to complex vibration problems due to mass eccentricity, time-varying backlash, and dynamic meshing parameter variations. A nonlinear dynamic model with six degrees of freedom is established, incorporating time-varying meshing stiffness, derived using the potential energy method and mass eccentricity. The Runge-Kutta method is employed to solve the system response under varying eccentricities and rotational speeds. Time-domain and frequency-domain analyses, phase portraits, and Poincaré maps are used to investigate the dynamic characteristics. The results indicate that mass eccentricity significantly influences system behavior, leading to the evolution from single-period to multi-period motions (e.g., 20-period cycles), and aggravates bifurcation and oscillation phenomena. The findings provide theoretical support for structural optimization and vibration control of gear transmission systems.

gear transmission system  /  dynamic meshing parameters  /  dynamic backlash  /  time-varying meshing stiffness
Lei HOU, Jinzhou SONG, Zeyuan CHANG, Yi CHEN, Yushu CHEN. Dynamical property analysis of gear system with mass eccentricity incorporating dynamic meshing parameters and time-varying backlash[J]. Journal of Vibration Engineering, 2025 , 38 (6) : 1335 -1343 . DOI: 10.16385/j.cnki.issn.1004-4523.2025.06.022
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Year 2025 volume 38 Issue 6
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Article Info
doi: 10.16385/j.cnki.issn.1004-4523.2025.06.022
  • Receive Date：2025-04-23
  • Online Date：2026-02-12
  • Published：2025-06-10
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  • Received：2025-04-23
  • Revised：2025-05-21
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Affiliations
    1.School of Astronautics，Harbin Institute of Technology，Harbin 150001，China
    2.School of Civil Engineering，Harbin Institute of technology，Harbin 150090，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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