Crack growth under alternating loading |
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Authors: | V M Tikhomirov |
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Affiliation: | (1) Siberian State University of Means of Communication, Novosibirsk, 630049, Russia |
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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.
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Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 49, No. 5, pp. 190–198, September–October, 2008. |
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Keywords: | alternating loading fatigue crack initial crack opening stress intensity factor |
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