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Wyświetlanie 1-3 z 3
Tytuł:
Modelling of contact geometry of tool and workpiece in grinding process with crossed axes of the tool and workpiece with circular profile
Autorzy:
Kalchenko, Volodimyr
Yeroshenko, Andrij
Boyko, Sergiy
Kalchenko, Olga
Powiązania:
https://bibliotekanauki.pl/articles/1837951.pdf
Data publikacji:
2021
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
circular arc
grinding
equidistant curves
cutting edge
abrasive surface
abrasive materials
crossed axes
abrasive wheel
heat stress
grinding performance
Opis:
A general model is developed, and on its basis, there are special models formulated of the grinding process with crossed axes of the tool and workpiece with a profile in the form of a circle arc. A new method of control of the grinding process is proposed, which will provide processing by equidistant curves, and the amount of cutting of a circle equal to the allowance. This will increase the productivity and quality of grinding. The presented method of grinding implements the processing with the spatial contact line of the tool and workpiece. When the axes are crossed, the contact line is stretched, which leads to an increase of the contact area and, accordingly, to a decrease of the temperature in the processing area. This allows processing of workpieces with more productive cutting conditions.
Źródło:
Acta Mechanica et Automatica; 2021, 15, 1; 9-15
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On 3D anticrack problem of thermoelectroelasticity
Autorzy:
Kaczyński, A.
Powiązania:
https://bibliotekanauki.pl/articles/387471.pdf
Data publikacji:
2018
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
thermoelectroelasticity
heat flow
anticrack
singular integral equation
thermal stress singularities
Opis:
A solution is presented for the static problem of thermoelectroelasticity involving a transversely isotropic space with a heat-insulated rigid sheet-like inclusion (anticrack) located in the isotropy plane. It is assumed that far from this defect the body is in a uniform heat flow perpendicular to the inclusion plane. Besides, considered is the case where the electric potential on the anticrack faces is equal to zero. Accurate results are obtained by constructing suitable potential solutions and reducing the thermoelectromechanical problem to its thermomechanical counterpart. The governing boundary integral equation for a planar anticrack of arbitrary shape is obtained in terms of a normal stress discontinuity. As an illustration, a closed-form solution is given and discussed for a circular rigid inclusion.
Źródło:
Acta Mechanica et Automatica; 2018, 12, 2; 109-114
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical modelling of stationary thermoelastic state for a plate with periodic system of inclusions and cracks
Autorzy:
Zelenyak, Volodymyr
Powiązania:
https://bibliotekanauki.pl/articles/387384.pdf
Data publikacji:
2019
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
stress intensity factor
singular integral equation
inclusion
heat conduction
thermoelasticity
crack
Opis:
Two-dimensional stationary problem of heat conduction and thermoelasticity for infinite elastic body containing periodic system of inclusions and cracks is considered. Solution of the problem is constructed using the method of singular integral equations (SIEs). The numerical solution of the system integral equations are obtained by the method of mechanical quadrature for a plate heated by a heat flow, containing periodic system elliptic inclusions and thermally insulated cracks. There are obtained graphic dependences of stress intensity factors (SIFs), which characterise the distribution of intensity of stresses at the tops of a crack, depending on the length of crack, elastic and thermoelastic characteristics inclusion, relative position of crack and inclusion.
Źródło:
Acta Mechanica et Automatica; 2019, 13, 1; 11-15
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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