An FFT-Based Transient Flash Temperature Model for General Three-Dimensional Rough Surface Contacts

Autor:	Harvey Nixon, Jianqun Gao, Xiaolan Ai, Si C. Lee
Rok vydání:	1999
Předmět:	Materials science Mechanical Engineering Thermodynamics Surfaces and Interfaces Surface finish Mechanics Thermal conduction Laser flash analysis Surfaces Coatings and Films Flash (photography) Mechanics of Materials Heat transfer Surface roughness Transient response Transient (oscillation)
Zdroj:	Journal of Tribology. 122:519-523
ISSN:	1528-8897 0742-4787
DOI:	10.1115/1.555395
Popis:	A transient flash temperature model was developed based on a Fast Fourier Transform method. An analytical expression for the heat partition function was obtained. Together, these substantially increase the speed of flash temperature calculations. The effect of surface topography on the flash temperature was examined. According to the simulation results, the surface with a longitudinal roughness produced a noticeably higher flash temperature than the surface with a transverse roughness. The simulation results also indicate that there is a significant cross-heating activity between the asperities; the temperature profiles appeared surprisingly gradual although their contact pressures had extremely sharp peaks. [S0742-4787(00)04002-9]
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9ef258ea9e12e150a7170087d25ed897 https://doi.org/10.1115/1.555395 Zobrazit plný text záznamu