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Phenomenological approach to mechanical damage growth analysis.

Authors :
Pugno N
Bosia F
Gliozzi AS
Delsanto PP
Carpinteri A
Source :
Physical review. E, Statistical, nonlinear, and soft matter physics [Phys Rev E Stat Nonlin Soft Matter Phys] 2008 Oct; Vol. 78 (4 Pt 2), pp. 046103. Date of Electronic Publication: 2008 Oct 03.
Publication Year :
2008

Abstract

The problem of characterizing damage evolution in a generic material is addressed with the aim of tracing it back to existing growth models in other fields of research. Based on energetic considerations, a system evolution equation is derived for a generic damage indicator describing a material system subjected to an increasing external stress. The latter is found to fit into the framework of a recently developed phenomenological universality (PUN) approach and, more specifically, the so-called U2 class. Analytical results are confirmed by numerical simulations based on a fiber-bundle model and statistically assigned local strengths at the microscale. The fits with numerical data prove, with an excellent degree of reliability, that the typical evolution of the damage indicator belongs to the aforementioned PUN class. Applications of this result are briefly discussed and suggested.

Details

Language :
English
ISSN :
1539-3755
Volume :
78
Issue :
4 Pt 2
Database :
MEDLINE
Journal :
Physical review. E, Statistical, nonlinear, and soft matter physics
Publication Type :
Academic Journal
Accession number :
18999489
Full Text :
https://doi.org/10.1103/PhysRevE.78.046103