Research on dynamic characteristics and radiation noise of a helicopter main reducer based on finite element and boundary element method

被引：5

作者：

Zhang, Jingqi ^{[1
]}

Zhou, Jianxing ^{[1
]}

Wang, Shengnan ^{[1
]}

Wang, Haiwei ^{[2
]}

Lu, Fengxia ^{[3
]}

机构：

[1] Xinjiang Univ, Coll Mech Engn, Urumqi 830047, Peoples R China

[2] Northwestern Polytech Univ, Sch Mech Engn, Xian 710072, Peoples R China

[3] Nanjing Univ Aeronaut & Astronaut, Natl Key Lab Sci & Technol Helicopter Transmiss, Nanjing 210016, Peoples R China

来源：

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2023年 / 37卷 / 09期

关键词：

Acoustic response; Finite element and boundary element method; Gearbox; Radiated noise; VIBRATION; GEARBOX; IMPROVEMENT;

D O I：

10.1007/s12206-023-0807-9

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In order to solve the problem of radiation noise of helicopter reducer with symmetrical structure, a simulation method is proposed to predict the noise of gearbox of a helicopter reducer from steady dynamic response to the acoustic radiation calculation. Primarily, taking the influence of time-varying stiffness into consideration, the lumped mass model of gear-rotor-bearing system is established. The dynamic load of transmission system is solved by New-Mark-& beta; method, which is regarded as excitation of the gearbox. Then finite element model of housing is established, the radiated noise of the housing is predict by finite element and boundary element method, the influence of multi-source excitation on the radiated noise of the gearbox is analyzed. Finally, the radiated noise of the reducer under different working conditions is explored. All conclusions of this research could provide theoretical reference for vibration and noise reduction of helicopter reducer.

引用

页码：4489 / 4505

页数：17

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