Abstract
In this work the effect of constraint, i.e. specimen size and geometry, on the high temperature crack tip fields is studied. The approach extends the two parameter method developed for elastic-plastic fracture mechanics to the creep regime. Finite element distributions of crack tip stress and creep strain under transient and steady state conditions are presented and the results interpreted in terms of the Q stress. The variation of the Q value from short to long term conditions is also examined for elastic-creep materials.
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Bettinson, A.D., O’Dowd, N.P., Nikbin, K., Webster, G.A. (2001). Two Parameter Characterisation of Crack Tip Fields under Creep Conditions. In: Murakami, S., Ohno, N. (eds) IUTAM Symposium on Creep in Structures. Solid Mechanics and its Applications, vol 86. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-9628-2_10
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DOI: https://doi.org/10.1007/978-94-015-9628-2_10
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-5623-8
Online ISBN: 978-94-015-9628-2
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