Failure Analysis and Reliability Evaluation of a Planetary Gear Box

2010 ◽  
Vol 118-120 ◽  
pp. 464-467 ◽  
Author(s):  
Yun Nan Teng ◽  
Fei Feng ◽  
Ya Zhe Chen ◽  
Li Yang Xie ◽  
Bang Chun Wen
Keyword(s):  
Contact Stress ◽  
High Efficiency ◽  
Gear Tooth ◽  
Planetary Gear ◽  
Reliability Evaluation ◽  
Engineering Practice ◽  
Continuous Action ◽  
Gear Box ◽  
Planetary Gear Box ◽  
Fea Analysis

With the qualities of smooth operation, high efficiency and small size, the planetary gear box was widely used in transmission field. In this paper, a 2-stage planetary gear box was studied. CAXA and Pro/E were used for modeling. The FEA analysis results were obtained by ANSYS, both the contact stress and the bending stress of the gear tooth root. The results showed that with the continuous action of cyclic loads, the excessive contact stress is the direct reason of the failure. Then, the system reliability evaluation was made, which can provide guidance for engineering practice.

Design and Experiences of a Planetary Gear Box for Adaptive Drives

2018 ◽  
pp. 284-291
Author(s):  
Konstantin Ivanov ◽  
Claudia Aide Gonzalez-Cruz ◽  
Marco Ceccarelli ◽  
Assylbek K. Ozhiken ◽  
Daniele Cafolla
Keyword(s):  
Planetary Gear ◽  
Gear Box ◽  
Planetary Gear Box

Design and Test of Differential Planetary Gear System for Open Rotor Power Gearbox

2013 ◽  
Author(s):  
Hideyuki Imai ◽  
Tatsuhiko Goi ◽  
Kenichi Kijima ◽  
Tooru Nishida ◽  
Hidenori Arisawa ◽  
...  
Keyword(s):  
Performance Test ◽  
High Efficiency ◽  
High Reliability ◽  
Gear Tooth ◽  
Planetary Gear ◽  
Design Concept ◽  
Gear System ◽  
Open Rotor ◽  
Planetary Gear System ◽  
Validation Tests

The open rotor engine is a next generation aero-engine that satisfies the demand for high fuel efficiency and low CO2 emission. A differential planetary gear system is incorporated in the open rotor engine to connect the turbine output shaft and fan rotors in order to counter-rotate the fan rotors as well as allow the turbine and fan rotors to operate at more efficient speeds. The open rotor gear system is required to have not only 20,000 hp high power transmission, but also an increasingly high efficiency, high reliability and light weight. To achieve these requirements, the following design works were conducted; (1) a low misalignment and lightweight carrier, (2) a flexible structure to absorb the displacement caused by the flight load, (3) an optimum gear tooth modification and (4) reduction of oil churning and windage losses. Also, extensive analyses and simulations such as lube oil flow CFD, FEA and tooth contact analysis were conducted. A full scale prototype gear system was manufactured and validation tests were conducted using a newly constructed test rig to validate the design concept. A slow roll test, rated performance test and efficiency test were conducted. And the design concept was found to be valid. This paper describes details of the prototype design and the results of the validation tests.

Kinetic Analysis of Planetary Gear Box

2011 ◽  
Vol 228-229 ◽  
pp. 227-232
Author(s):  
Wei Sheng Li ◽  
Li Ming Yu
Keyword(s):  
Finite Element Method ◽  
Structural Parameters ◽  
Planetary Gear ◽  
Working Environment ◽  
Structural Vibration ◽  
Design Stage ◽  
Reduction Gear ◽  
Box Structure ◽  
Gear Box ◽  
Planetary Gear Box

Structure noise of marine gearbox seriously affects warship’s concealment, stability of transmission system and amenity of crew working environment. There are many ways to control structural vibration. To add damping in reduction gear box is an effective measurement to suppress box resonance. The key to design damping structure is to determine the parameters of the structure. In most instances, the structural parameters depend on experience and many experiments, which is lengthy and expensive. This paper made an analysis at design stage of reduction gear product by finite element method. This can determine the parameters of box structure, and reduce the input effectively. This method has important theoretical value and application prospect.

Failure analysis of input shaft of planetary gear box of a bowl mill — a case study

2010 ◽  
Vol 63 (2-3) ◽  
pp. 691-695
Author(s):  
M. Swamy ◽  
C. R. Prasad ◽  
M. S. Rawat ◽  
P. V. Ramaulu
Keyword(s):  
Failure Analysis ◽  
Planetary Gear ◽  
Input Shaft ◽  
Gear Box ◽  
Planetary Gear Box
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