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Influence of Pressure Angle on the Dynamic Characteristics of Asymmetric Helical Gear Transmissions.

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Title: Influence of Pressure Angle on the Dynamic Characteristics of Asymmetric Helical Gear Transmissions.
Authors: FU, Xue-zhong1 100002350@gxust.edu.cn, MAN, Jian-shu1 20230103049@stdmail.gxust.edu.cn, ZOU, Jun2 zoujun@fangshengaxle.com, LI, Shu-ping1 100001550@gxust.edu.cn
Source: Mechanika. 2026, Vol. 32 Issue 1, p20-28. 9p.
Subjects: Helical gears, Dynamic stiffness, Nonlinear mechanics, Mechanical vibration research, Vibration (Mechanics)
Abstract: To address the lack of research on the dynamic characteristics of asymmetric helical gears, this study systematically investigates their time-varying meshing stiffness and meshing impact characteristics based on the lumped-parameter method and nonlinear dynamic theory. An eight-degree-of-freedom dimensionless dynamic model is developed. Using the pressure angle on the driving side as the main variable, the dynamic characteristics of asymmetric and symmetric helical gears are compared, and the effects of different pressure angles on time-varying meshing stiffness, time histories, phase portraits, and Poincaré maps are analyzed. The results show that the asymmetric helical gear exhibits higher average meshing stiffness, smaller vibration amplitudes, and smoother responses than the symmetric gear. Within a driving-side pressure angle range of 30 to 35 degrees, the system achieves the best stability and periodicity, and the meshing impact amplitude is effectively suppressed. However, excessively small or large pressure angles lead to reduced system stability. This work clarifies the dynamic behavior of asymmetric helical gears and provides a theoretical basis for parameter design and high-performance transmission optimization. [ABSTRACT FROM AUTHOR]
Copyright of Mechanika is the property of Mechanika and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 192912349
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Influence of Pressure Angle on the Dynamic Characteristics of Asymmetric Helical Gear Transmissions.
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  Data: <searchLink fieldCode="AR" term="%22FU%2C+Xue-zhong%22">FU, Xue-zhong</searchLink><relatesTo>1</relatesTo><i> 100002350@gxust.edu.cn</i><br /><searchLink fieldCode="AR" term="%22MAN%2C+Jian-shu%22">MAN, Jian-shu</searchLink><relatesTo>1</relatesTo><i> 20230103049@stdmail.gxust.edu.cn</i><br /><searchLink fieldCode="AR" term="%22ZOU%2C+Jun%22">ZOU, Jun</searchLink><relatesTo>2</relatesTo><i> zoujun@fangshengaxle.com</i><br /><searchLink fieldCode="AR" term="%22LI%2C+Shu-ping%22">LI, Shu-ping</searchLink><relatesTo>1</relatesTo><i> 100001550@gxust.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Mechanika%22">Mechanika</searchLink>. 2026, Vol. 32 Issue 1, p20-28. 9p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Helical+gears%22">Helical gears</searchLink><br /><searchLink fieldCode="DE" term="%22Dynamic+stiffness%22">Dynamic stiffness</searchLink><br /><searchLink fieldCode="DE" term="%22Nonlinear+mechanics%22">Nonlinear mechanics</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+vibration+research%22">Mechanical vibration research</searchLink><br /><searchLink fieldCode="DE" term="%22Vibration+%28Mechanics%29%22">Vibration (Mechanics)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: To address the lack of research on the dynamic characteristics of asymmetric helical gears, this study systematically investigates their time-varying meshing stiffness and meshing impact characteristics based on the lumped-parameter method and nonlinear dynamic theory. An eight-degree-of-freedom dimensionless dynamic model is developed. Using the pressure angle on the driving side as the main variable, the dynamic characteristics of asymmetric and symmetric helical gears are compared, and the effects of different pressure angles on time-varying meshing stiffness, time histories, phase portraits, and Poincaré maps are analyzed. The results show that the asymmetric helical gear exhibits higher average meshing stiffness, smaller vibration amplitudes, and smoother responses than the symmetric gear. Within a driving-side pressure angle range of 30 to 35 degrees, the system achieves the best stability and periodicity, and the meshing impact amplitude is effectively suppressed. However, excessively small or large pressure angles lead to reduced system stability. This work clarifies the dynamic behavior of asymmetric helical gears and provides a theoretical basis for parameter design and high-performance transmission optimization. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Mechanika is the property of Mechanika and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.5755/j02.mech.43041
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      – Code: eng
        Text: English
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        PageCount: 9
        StartPage: 20
    Subjects:
      – SubjectFull: Helical gears
        Type: general
      – SubjectFull: Dynamic stiffness
        Type: general
      – SubjectFull: Nonlinear mechanics
        Type: general
      – SubjectFull: Mechanical vibration research
        Type: general
      – SubjectFull: Vibration (Mechanics)
        Type: general
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      – TitleFull: Influence of Pressure Angle on the Dynamic Characteristics of Asymmetric Helical Gear Transmissions.
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            NameFull: MAN, Jian-shu
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            NameFull: ZOU, Jun
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            NameFull: LI, Shu-ping
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            – D: 01
              M: 01
              Text: 2026
              Type: published
              Y: 2026
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