Temat: material modelling - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Modelling of adhesion effect in friction of viscoelastic materials
Autorzy:: Goryacheva, I.
Makhovskaya, Y.
Powiązania:: https://bibliotekanauki.pl/articles/386211.pdf
Data publikacji:: 2011
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:: materiał
tarcie
modelowanie
viscoelasticity
material
friction
adhesion
modelling
Opis:: A model is suggested for the analysis of the combined effect of viscoelastic properties of bodies and adhesive interaction between their surfaces in sliding. The model is based on the solution of the contact problem for a 3D wavy surface sliding on the boundary of a viscoelastic foundation taking into account the molecular attraction in the gap between the bodies. The influence of adhesion on the contact stress distribution, real contact area and hysteretic friction force is analyzed.
Źródło:: Acta Mechanica et Automatica; 2011, 5, 4; 40-46
1898-4088
2300-5319
Pojawia się w:: Acta Mechanica et Automatica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Impact of cutting units’ design on biomass cutting resistance
Autorzy:: Zastempowski, Marcin
Bochat, Andrzej
Janiec, Maciej
Hujo, Lubomir
Jablonicky, Juraj
Powiązania:: https://bibliotekanauki.pl/articles/2204589.pdf
Data publikacji:: 2022
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:: biomass cutting
drum cutting unit
plant material
mathematical modelling
cutting of fibrous materials
Opis:: The paper presents mathematical models describing the moments of resistance to cutting on the cutting drum shafts in the biomass cutting process. The mathematical procedures described in the paper have been verified on a test stand developed and constructed by the authors, which reflects real conditions of the process of cutting plant material into pieces of specified lengths. Experimental verification proved that the developed mathematical models are adequate for drums of both cylindrical and conical constructions. The value of the average error did not exceed 13%. Following the mathematical elaboration and verification studies, the authors carried out calculations for machines currently available on the market that are equipped with drum cutting units. The calculations were carried out for the most commonly cut material, i.e. for maize, straw and green plant materials. The obtained results confirm the complexity of the problem arising from a wide range of numerical values of cutting resistance, which is contained in the range of 400–1,800 nm. The compiled database can be practically applied in the selection of machines for specific field works, and the mathematical models developed and verified in the study can be applied at the stage of designing new designs of cutting drums used in forage harvesters.
Źródło:: Acta Mechanica et Automatica; 2022, 16, 3; 159--265
1898-4088
2300-5319
Pojawia się w:: Acta Mechanica et Automatica
Dostawca treści:: Biblioteka Nauki

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