Robust optimization in determining failure criteria of a planetary gear assembly considering fatigue condition

Mandol, Sourabh; Bhattacharjee, Debraj; Dan, Pranab K.

doi:10.1007/s00158-015-1336-7

Cited by 10 publications

(1 citation statement)

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“…Ravisankar and Mruthyunjaya computerized the structural synthesis process. 12 However, the tribological analysis is necessary 13 to comprehend the mechanism dynamics but in graphical method those are not incorporated. This synthesis methodology uses two types of approach, namely isomorphic and non-isomorphic graph formation.…”

Section: Introductionmentioning

confidence: 99%

A heuristic synthesis of multistage planetary gearbox layout for automotive transmission

Bhattacharjee

Bhola

Dan

2018

Proceedings of the Institution of Mechanical Engineers, Part K:

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The automatic transmission system is very crucial for the high-speed vehicles, where the planetary or epicyclic gearbox is a standard feature. With the increase in design intricacies of planetary gearbox, mathematical modelling has become complex in nature and therefore there is a need for modelling of multistage planetary gearbox including the shifting scheme. A random search-based synthesis of three degrees of freedom (DOF) high-speed planetary gearbox has been presented in this paper, which derives an efficient gear shifting mechanism through designing the transmission schematic of eight speed gearboxes compounded with four planetary gear sets. Furthermore, with the help of lever analogy, the transmission power flow and relative power efficiency have been determined to analyse the gearbox design. A simulation-based testing and validation have been performed which show the proposed model is efficient and produces satisfactory shift quality through better torque characteristics while shifting the gears. A new heuristic method to determine suitable compounding arrangement, based on mechanism enumeration, for designing a gearbox layout is proposed here. An important finding on automotive gear shift quality due to closer gear ratio is also reported in this work.

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Section: Introductionmentioning

confidence: 99%