Torsion of a Circular Cross Section Shaft in the Steady-State Creep Conditions

Pustaić, Dragan and Pustaić, Maja (2015) Torsion of a Circular Cross Section Shaft in the Steady-State Creep Conditions. = Torsion of a Circular Cross Section Shaft in the Steady-State Creep Conditions. In: The 8th International Congress of Croatian Society of Mechanics - 8th ICCSM, 29.09.-02.10.2015., Opatija, Hrvatska.

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Official URL: http://bib.irb.hr/prikazi-rad?&rad=761093

Abstract

he influence of creep strain on stress distribution across a cross section of shaft in state of torsion is considered in this paper. The cross section of shaft is either an annulus or a full circular cross section. A total strain at an arbitrary point of a cross section is composed of elastic strain (e), plastic strain (p), and viscoelastic or creep strain (c), [2], [3], [4]. It is assumed that these strains are small and that plastic strains do not occur. In the same way, it is also assumed that the stresses do not change with time (stresses are constant at any moment), i.e. the shaft is in the steady-state creep conditions. In such a process of creeping, elastic strains can be neglected with respect to creep strains, especially when the shaft is exposed to creep during a long period of time. An analysis of creep strain and stress distribution across a cross section of shaft has been carried out by means of analytical methods (the Fourier´s method). Namely, since creep strain depends on stress and time at a certain temperature, the creep strain is assumed as a product of the two functions of which the first function depends on stress and temperature and the second one depends on time and temperature.

Item Type: Conference or Workshop Item (Lecture)
Keywords (Croatian): Torsion of a circular cross section shaft; torsion of a shaft in the steady-state creep conditions; analytical methods (the Fourier´s method); creep strain depends on stress and time at given temperature
Subjects: TECHNICAL SCIENCE > Aviation, rocket and space technology
Divisions: 200 Department of Engineering Mechanics > 210 Chair of Mechanics and Strength of Materials
Indexed in Web of Science: No
Indexed in Current Contents: No
Date Deposited: 17 Jan 2017 15:05
Last Modified: 17 Jan 2017 15:05
URI: http://repozitorij.fsb.hr/id/eprint/7172

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