A multi-layered ring under parabolic pressure

• Autorzy: Markides Ch. F. , Pasiou E. D. , Kourkoulis S. K.
• Języki publikacji: EN

Abstrakty

EN

The stress- and displacement-fields developed in a circular ring consisting of a finite number of linearly elastic homogeneous and isotropic concentric layers are determined. The composite ring is subjected to a distribution of radial stresses (acting along two finite arcs of its periphery) varying according to a parabolic law. The problem is solved analytically adopting Savin’s approach for an infinite plate with a hole strengthened by rings. Taking advantage of the analytic solution, a numerical model is properly calibrated and validated by considering the case of a three-layered ring. It is concluded that the constructed model simulates reality in an excellent manner and therefore it can be safely used for a thorough parametric analysis of the numerous factors influencing the stress- and displacement-fields.

Słowa kluczowe

EN

composite ring; multi-layered rings; Brazilian disc test; ring test; complex potentials

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Engineering Transactions
• Rocznik: 2016
• Tom: Vol. 64, iss. 4
• Strony: 433--440
• Opis fizyczny: Bibliogr. 5 poz., rys., wykr.

Twórcy

autor

Markides Ch. F.

• National Technical University of Athens Department of Mechanics Laboratory of Testing and Materials Theocaris Building, Zografou Campus, 15773, Athens, Greece

autor

Pasiou E. D.

• National Technical University of Athens Department of Mechanics Laboratory of Testing and Materials Theocaris Building, Zografou Campus, 15773, Athens, Greece

autor

Kourkoulis S. K.

• National Technical University of Athens Department of Mechanics Laboratory of Testing and Materials Theocaris Building, Zografou Campus, 15773, Athens, Greece

Bibliografia

• 1. ISRM, Suggested methods for determining tensile strength of rock materials, Int. J. Rock Mech. Mining Sci. & Geomechanics Abs., 15(3): 99–103, 1978.
• 2. Markides Ch.F., Kourkoulis S.K., The stress field in a standardized Brazilian disc: The influence of the loading type acting on the actual contact length, Rock Mech. Rock Eng., 45: 145–158, 2012.
• 3. Savin G.N., Stress concentration around holes, Pergamon Press, Oxford, 1961.
• 4. Muskhelishvili N.I., Some basic problems of the mathematical theory of elasticity, 4th edition, P. Noordhoff Groningen, The Netherlands, 1963.
• 5. Markides Ch.F., Pasiou E.D., Kourkoulis S.K., Parametric study of a multi-layered ring under parabolic pressure, to be submitted, 2016.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).