This article is cited in 4 papers

Crack growth under alternating loading

V. M. Tikhomirov

Siberian State University of Means of Communication, Novosibirsk, 630049, Russia

Abstract: Crack propagation under alternating loading is investigated. Relations between the growth rate of a fatigue defect and loading parameters and the expression for the stress intensity factor are derived for compression of a cracked solid taking into account the possible contact of the crack faces. A model for the deformation of a small region near the crack tip is proposed which allows one to formulate the conditions of residual opening of a growing fatigue crack. The experimental data obtained in tests of steel samples are compared with the results of calculation using the developed procedure.

Keywords: alternating loading, fatigue crack, initial crack opening, stress intensity factor.

UDC: 620.178.6

Received: 26.03.2007
Accepted: 10.08.2007

 English version: Journal of Applied Mechanics and Technical Physics, 2008, 49:5, 864–871

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