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Structural geometry effect on the size-scaling of strength
KTH, Superseded Departments, Solid Mechanics.ORCID iD: 0000-0001-8699-7910
2001 (English)In: International Journal of Fracture, ISSN 0376-9429, E-ISSN 1573-2673, Vol. 109, no 2, 141-151 p.Article in journal (Refereed) Published
Abstract [en]

The sensitivity of the empirical exponent of Bazant's size-effect scaling law on structural geometry is clarified through numerical experiments. For large centre- cracked tension panels, made of a linearly softening material, the best-fitting exponent is 0.90, whereas for large edge-cracked panels it is 0.75. For edge-cracked panels, the value of the exponent increases as a function of increasing crack-length-to-width-ratio. The results indicate that with structures of brittleness numbers below unity, reliable predictions of strength require the size-effect scaling law to be fitted for any particular structural geometry.

Place, publisher, year, edition, pages
2001. Vol. 109, no 2, 141-151 p.
Keyword [en]
cohesive zone, linear softening, numerical experiments, size effect, structural geometry, fracture, concrete, crack
Identifiers
URN: urn:nbn:se:kth:diva-20709ISI: 000169245900001OAI: oai:DiVA.org:kth-20709DiVA: diva2:339405
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Östlund, Sören

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