Experimental and numerical analysis of laminated carbon fibre-reinforced polymer gears with implicit model for coefficient-of-friction evaluation

Borut Černe (Author), Zoran Bergant (Author), Roman Šturm (Author), Jože Tavčar (Author), Damijan Zorko (Author)

Abstract

Laminated composites have so far received little attention as a potential material for gear drive applications. In the presented study, the thermomechanical performance of a newly developed type of epoxy impregnated, autoclave-cured carbon fibre-reinforced polymer gear-running in pair with a steel pinion-was analysed, using a combination of experimental and numerical approaches. The employed methods enabled the identification of the composite’s mechanical, thermal, and tribological characteristics, as related to the studied gear pair application. A newly proposed, finite-element-analysis-based iterative procedure enabled an implicit evaluation of the analysed material pair’s coefficient of friction (COF), which is a key parameter in determining the gear pair’s thermomechanical characteristics. For the considered material pair, a value of 0.34 was identified for the coefficient in the quasi-steady region. As the coefficient is strongly correlated with frictional heat generation and significantly affects the surface shear stress, it can consequently have a meaningful influence on the composite’s wear rate. The developed COF identification procedure was validated using a reciprocating cylinder-on-flat tribological test method. The composite gear’s service life was additionally tested at various running loads, resulting in pitch contact pressures ranging between 400 and 540 MPa. Lifetime gear test results showed a markedly superior performance compared to the high-temperature thermoplastic polyether ether ketone, which is typically employed in the most demanding polymer gear applications. Several methods are additionally proposed that could further improve the developed composite gears’ performance.

Keywords

carbon fibre;thermomechanical analysis;finite element method;mechanical testing;composites;autoclave;

Data

Language:	English
Year of publishing:	2022
Typology:	1.01 - Original Scientific Article
Organization:	UL FS - Faculty of Mechanical Engineering
UDC:	536:620.1/.2
COBISS:	96943363
ISSN:	2288-5048
Views:	128
Downloads:	42
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	ogljikova vlakna;termo mehanska analiza;metoda končnih elementov;mehansko preizkušanje;kompoziti;avtoklav;
Type (COBISS):	Article
Pages:	str. 246-262
Volume:	ǂVol. ǂ9
Issue:	ǂiss. ǂ1
Chronology:	Feb. 2022
ID:	14641679