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pro vyhledávání: '"Harry Questa"'
Autor:
Harry Questa, Mahdi Mohammadpour, Stephanos Theodossiades, Colin P. Garner, Stephen R. Bewsher, Günter Offner
Publikováno v:
Machines, Vol 11, Iss 1, p 93 (2023)
This study presents a new flexible dynamic model for drive systems comprising lubricated bearings operating under conditions representative of electrified vehicle powertrains. The multi-physics approach importantly accounts for the tribological pheno
Externí odkaz:
https://doaj.org/article/c61b3efaf30b4cc5aed2833144c26641
Autor:
Mahdi Mohammadpour, Mehdi Shahedi Asl, Mehdi Eskandarzade, Byungki Kim, Abolfazl Tutunchi, Harry Questa, Tahereh Masalehdan
Publikováno v:
Materials Today Communications. 26:102026
Polytetrafluoroethylene (PTFE) polymer is used extensively in industry as a solid lubricant because of its lack of reactivity with most industrial materials. However, PTFE has a low abrasive resistance, limiting its application. In this study, the me
Autor:
Harry Questa, Guenter Offner, Stephanos Theodossiades, Colin P. Garner, Stephen R. Bewsher, Mahdi Mohammadpour
Publikováno v:
Tribology International. 154:106675
Roller bearings are critical components in electrified powertrains. At high speeds, the critical role of the elastohydrodynamic lubrication (EHL) cannot be ignored, necessitating a tribo-dynamic analysis. This paper investigates the behaviour of roll
Autor:
Mahdi Mohammadpour, Martin Sopouch, Günter Offner, Jack Walker, Harry Questa, Christoph Schweiger, Stephen R. Bewsher
Publikováno v:
SAE Technical Paper Series.
With the increasing stringent emissions legislation on internal combustion engines, alongside requirements for enhanced fuel efficiency as key driving factors for many OEMs, there are many research activities supported by the automotive industry that