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On the effect of quasi-static loading rates upon the fracture toughness of ordinary structural steels
1996 (English)In: Mechanisms and mechanics of damage and failure: proceedings of the 11th Biennial European Conference on Fracture - ECF 11 - held in Poitiers-Futuroscope, France, 3 - 6 September 1996 / [ed] J. Petit, EMAS , 1996, Vol. Vol. 1, p. 443-Conference paper, Published paper (Refereed)
Abstract [en]

For a cracked structural component the crack tip loading rate very often exceeds the maximum rate prescribed in current fracture toughness standards, e.g., ASTM E813. In a previous work, Lorentzon and Eriksson, it was found that loading rates at and just above the ASTM limit significantly affect the fracture toughness of ordinary structural steels. The effect of the loading rate upon the stress and strain distribution around a mode I plane strain crack tip has been calculated with the finite element method. A boundary layer formulation based upon Westergaard's exact analytical solution for an infinite plate and a Perzyna visco-plastic material model has been used. The results show that viscous effects are significant only very close to the crack tip.

Place, publisher, year, edition, pages
EMAS , 1996. Vol. Vol. 1, p. 443-
National Category
Applied Mechanics
Research subject
Solid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-35536Local ID: a18edc50-91d8-11dc-9a81-000ea68e967bISBN: 0-947817-90-5 (print)OAI: oai:DiVA.org:ltu-35536DiVA, id: diva2:1008789
Conference
Biennial European Conference on Fracture (ECF) : 03/09/1996 - 06/09/1996
Note
Godkänd; 1996; 20071113 (cira)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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