Study of Modal Characteristics of a Geared Rotor System

Saxena, Ankur; Parey, Anand; Chouksey, Manoj

doi:10.1016/j.protcy.2016.03.021

Cited by 15 publications

(4 citation statements)

References 6 publications

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“…In 2014, Hou et al [67] studied the dynamic response of the friction-impact rotor system during hovering and analyzed the influence of non-inertial environments on the non-linear dynamic behavior of the rotor system. In 2016, Saxena et al [68] used the ANSYS finite element analysis software to conduct a modal analysis of the ball-bearing gear-rotor system. The influence of the bearing stiffness variation on the gear-rotor system's natural frequency was studied.…”

Section: Gear-rotor Systemmentioning

confidence: 99%

Research Progress on the Dynamic Characteristics of Planetary Gear Transmission in a Non-Inertial System

Gao

Wang

2023

Machines

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Planetary gear systems have many advantages over other gear systems. Previous studies on its dynamic characteristics mostly used Earth as the reference system, which is inconsistent with the actual working conditions of many planetary gear systems, such as aircraft maneuvering, vehicle movement changes, etc. By analyzing representative research papers, this study summarizes the lumped-parameter, finite element, and rigid–flexible coupling models commonly used in studying the traditional dynamic characteristics. Then, the research status of gear–rotor and planetary gear systems in inertial and non-inertial systems is summarized. The research progress of load characteristics, vibration characteristics, and vibration control of the traditional planetary gear system is summarized. Finally, some suggestions for future development are put forward. There are a few studies on the non-inertial dynamics of planetary gear systems. The three analysis models have distinct characteristics and applications but can all be used in non-inertial systems. The dynamic analysis method of non-inertial rotor systems can be combined with the dynamic study of gear systems. It is of practical significance to study the non-inertial dynamic characteristics of planetary gear systems. Scholars can refer to the non-inertial dynamic research of the gear–rotor system, select the analysis model according to the needs, and continue to study the dynamic characteristics of the planetary gear system under the non-inertial system.

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Section: Gear-rotor Systemmentioning

confidence: 99%

Research Progress on the Dynamic Characteristics of Planetary Gear Transmission in a Non-Inertial System

Gao

Wang

2023

Machines

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“…Dişli çarklarda dış titreşim frekansı, dişli çarkın doğal frekansı ile aynı olduğunda, rezonansa neden olmaktadır. Rezonansın büyük olduğu durumlarda, dişli hasar görmekte ve dişli çarkın ömrü kısalmaktadır [10]. Birçok gürültü ve titreşim sorunu rezonansla ile ilgilidir.…”

Section: Introductionunclassified

“…Bu parametreler, dinamik yükleme koşulları için bir sistemin tasarımında önemlidir. Sonlu Elmanlar Analiz yazılımları mod analizi çalışmaları yapmak için iyi bir potansiyele sahiptir [10].…”

Section: Introductionunclassified

Eliptik Dişli Çarkların Bilgisayar Destekli Doğal Frekans ve Mod Analizi

Yazar

2021

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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Dairesel olmayan dişli çarkların önemli bir üyesi olan eliptik dişli çarkların tasarım denklemleri çalışmanın ilk aşamasında hazırlanmıştır. İkinci aşamasında hazırlanan denklemleri döngü içerisinde çözmek ve istenilen diş sayısı ve modülde eliptik dişli çarkın 2-D modellenmesi için AutoLISP programlama dili ile bilgisayar ortamında mini bir paket program yazılımı geliştirilmiştir. Geliştirilen paket program ile AutoCAD ortamında modülü 2, diş sayısı 32 olan eliptik dişli çarkın tasarımı yapılmıştır. Tasarımı yapılan eliptik dişli çarkın sonlu elemanlar yöntemiyle doğal frekans ve modlarını belirlemek için ANSYS programı kullanılmıştır. Eliptik dişli çarkın tam 3-D modelini oluşturmak için ABAQUS yazılımı kullanılmıştır. Eliptik dişli çarkın doğal titreşim özelliği, titreşim türleri ve doğal frekansları tespit edilmiştir. Bu yazılım eliptik dişli çarkların mühendislik uygulamaları ve dinamik analizleri için kullanılabilir. Bir eliptik dişli çarkın titreşim özelliğini belirlemek için her türlü dinamik yüklere nasıl yanıt verdiğini belirlemek ve herhangi bir tasarım veya uygulama yapmadan önce daha pratik ve düşük maliyetli bir analiz yapmak için bu yöntem kullanılabilir. Yapılan analizler sonucunda tam durmayı gerektirmeksizin düzensiz hareketin elde edilebildiği bir makine elemanı olarak eliptik dişli çarkların kullanılabileceği tespit edilmiştir.

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“…Therefore, these characteristics are of great significance in the dynamic response of the system, the generation and transmission of dynamic loads, and the vibration behavior of the system. 8,9 By studying the parameter stability of the gear transmission, the stable area of the system operation can be determined, thus avoiding the instability of the transmission system, and providing a basis for the system design and vibration control. Sun Zhi-min 10 used numerical integration to obtain the simple harmonic, non-harmonic singleperiod, sub-harmonic, quasi-periodic, and chaotic steady-state forced response under different parameter conditions.…”

Section: Introductionmentioning

confidence: 99%

Model and Characteristic Simulation Analysis of a Two-Speed Transmission System

Chen¹,

Xie²,

Liu³

et al. 2021

The International Journal of Acoustics and Vibration

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One of the main tasks in the research of a helicopter two-speed transmission system was to improve its dynamic characteristics. For the low gear mode of the system, a dynamic model was established by using the lumped parameter method, the method of Runge-Kutta was used to solve the nonlinear dynamic system equations. The effect of the gear module on the dynamic transmission error, dynamic load of the gear pair and the dynamic windup angle of a one-way clutch were studied. And the effect of the one-way clutch torsional stiffness on the dynamic transmission error and dynamic load of the gear pair was also studied. The results show that: 1)~the dynamic transmission error of the gear pair decreases and the dynamic load of the gear pair increases with the increase of the gear module at the lower range of excitation frequencies; 2)~the dynamic windup angle of the one-way clutch increases with an increase of the gear module. 3)~the dynamic transmission error of the gear pair and the maximum dynamic load increases with an increase of the one-way clutch torsional stiffness at the lower and medium range of excitation frequencies. The above results can provide reference for the subsequent upgrade and improvement of the two-speed transmission system.

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Study of Modal Characteristics of a Geared Rotor System

Cited by 15 publications

References 6 publications

Research Progress on the Dynamic Characteristics of Planetary Gear Transmission in a Non-Inertial System

Research Progress on the Dynamic Characteristics of Planetary Gear Transmission in a Non-Inertial System

Eliptik Dişli Çarkların Bilgisayar Destekli Doğal Frekans ve Mod Analizi

Model and Characteristic Simulation Analysis of a Two-Speed Transmission System

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