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Content available remote Buckling of elastic-plastic sandwich conical shells - theoretical studies
Tertel E., Cyganiuk J., Kuryło P.
International Journal of Applied Mechanics and Engineering
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2011
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Vol. 16, no 1
129-140
EN
An analysis of elastic-plastic stability of sandwich conical shells is performed. The shells under consideration consist of two load-carrying face-layers and a core layer made of lightweight aerated plastics. The shell faces are made of isotropic, compressible and work-hardening materials. The thickness of those faces may vary, just as their material properties. The core layer is assumed to be elastic, incompressible in the normal z direction and it resists transverse shear only. A two-parametrical external load is assumed. Deformation of the shells into the plastic range is possible before buckling. The Nadai-Hencky deformation theory alongside with the H-M-H (Huber-Mises-Hencky) yield condition constitutive relations are adopted in the analysis. The strain energy approach and the Ritz method are used to derive and solve the stability equations.
2
Content available remote The influence of an effective friction angle on the velocity of material of group III, leaving the impact plate
Cyganiuk J. A., Kuryło P., Tertel E.
International Journal of Applied Mechanics and Engineering
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2009
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Vol. 14, no 4
929-939
EN
The paper presents the analysis of the influence of an effective friction angle on the velocity of a cement-type material of group III, leaving the flat plate of the pouring point. The analysis was carried out for oversized cement particles, with grain diameters classifying them as a material of group III. The analysis was carried out in the real conditions of cement production and for the impact plate mounted in the impact flowmeter GRAN 30. The effective friction angle of the oversized cement particles type CEMII A-V 42,5 R was considered to be the reference value. The velocity values were determined theoretically with the use of a mathematical model of the flow of a stream of bulk material in an impact point with a flat impact plate.
3
Content available remote Wybrane problemy automatyzacji i kontroli procesu wzbogacania rudy miedzi.
Jankowiak A., Kuryło P., Tertel E.
Technologia i Automatyzacja Montażu
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2006
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nr 4
31-34
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