Temat: piston sleeve - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Wear resistance of piston sleeve made of layered material structure: MMC A356R, anti-abrasion layer and FGM interface
Autorzy:: Hernik, S.
Powiązania:: https://bibliotekanauki.pl/articles/387577.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:: piston sleeve
wear
thermo-elasticity
Archard's law
Metal Matrix Composite
MMC
Functionally Graded Material
FGM
odporność na zużycie
termosprężystość
prawo Archarda
tuleja tłoka
stal nierdzewna
Opis:: The aim of this paper is the numerical analysis of the one of main part of car engine – piston sleeve. The first example is for piston sleeve made of metal matrix composite (MMC) A356R. The second improved material structure is layered. Both of them are comparison to the classical structure of piston sleeve made of Cr-Ni stainless steel. The layered material structure contains the anti-abrasion layer at the inner surface of piston sleeve, where the contact and friction is highest, FGM (functionally graded material) interface and the layer of virgin material on the outer surface made of A356R. The complex thermo-elastic model with Archard's condition as a wear law is proposed. The piston sleeve is modelling as a thin walled cylindrical axisymmetric shell. The coupled between the formulation of thermoelasticity of cylindrical axisymmetric shell and the Archard’s law with functionally changes of local hardness is proposed.
Źródło:: Acta Mechanica et Automatica; 2016, 10, 3; 207-212
1898-4088
2300-5319
Pojawia się w:: Acta Mechanica et Automatica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The impact of the energy state of the surface of friction pairs on the friction and wear in internal combustion engines
Autorzy:: Borkowska, J.
Kaźmierczak, A.
Krakowian, K.
Cienciała, M.
Skorupa, P.
Łoza, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/245015.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: friction pairs
top layer of surface
sealing function
piston ring
cylinder sleeve
combustion engine
tangential force
friction coefficient
molecular structure
bond
tribology
Opis:: The elements creating a friction pairs are described to be very difficult in terms of defining all optimal parameters in an unequivocal way. The research on stability of friction pairs is focused on the surface and the top layer of surface in the parts concerned. The main goal is to find new design solutions and materials, thereby achieving one million kilometers of mileage to main repair in the case of internal combustion engines. The biggest structural difficulties are noticeable in friction pairs where it can be observed sliding and returning motion, which is also connected with sealing function. A typical example of such pair is piston ring – cylinder sleeve in piston – rings - cylinder unit in an internal combustion engine. Engineers are currently seeking an additional factor, which would enable gaining the reduction of tangential force by reducing the friction coefficient in elements of friction pair during operations. The surface free energy may be such factor - it results from molecular structure and nature of the bonds between the molecules present in the material. Components of surface free energy determine the tribological properties of the material, which is reflected in the stability of the units. Energy state of the surface, which is connected with chemistry and characteristics in the material, is the first step to consider about the impact on wearing in internal combustion engine. This is the main topic of this article.
Źródło:: Journal of KONES; 2015, 22, 4; 37-41
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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