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On the sensitivity of the damage zone model for linearly softening materials

✍ Scribed by Per G. Clarin

Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
334 KB
Volume
29
Category
Article
ISSN
0013-7944

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✦ Synopsis

The fracture model for softening materials called the Damage Zone Model (DZM), is found to be basically insensitive to small errors in the constituents. However, the constituent Gr (the apparent fracture energy) is deduced from an experimentally determined notched strength by using DZM. This may cause large errors in Gz if the notched strength is measured from a specimen with a ratio of crack length to material ductility below a critical value. A test procedure to ensure limited errors in G: is proposed based on numerical results.

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