TY  - CHAP
EP  - 663
PB  - Taylor & Francis
SN  - 9780415446167
T2  - Design, Assessment and Retrofitting of RC Structures
A1  - Carpinteri, Alberto
A1  - Corrado, Mauro
A1  - Paggi, Marco
A1  - Mancini, Giuseppe
SP  - 655
Y1  - 2007///
TI  - Cohesive versus overlapping crack model for a size effect analysis of RC elements in bending
ID  - eprints1953
AV  - none
N2  - The well-known Cohesive Crack Model describes strain localization with a softening stress
variation in concrete members subjected to tension. An analogous behaviour is also observed in compression,
when strain localization takes place in a damaged zone and the stress reaches the compressive strength with
surface energy dissipation. In the present paper, we propose the new concept of Overlapping Crack Model,
which is analogous to the cohesive one and permits to simulate material compenetration. The two aforementioned elementary models are merged into a more complex algorithm able to describe both cracking and crushing growths during loading processes in RC members. A numerical procedure based on elastic coefficients is developed, taking into account the proposed constitutive laws in tension and compression. With this algorithm, it is possible to effectively capture the flexural behaviour of RC beams by varying the reinforcement percentage and/or the beam depth
N1  - Second volume of the Proceedings of the 6th International Conference on Fracture Mechanics of Concrete and Concrete Structures (FraMCoS-6, Catania, Italy, 17-22 June 2007)
UR  - http://eprints.imtlucca.it/1953/
ER  -