ABSTRACT
A FRACTURE MECHANICS MODEL FOR R . C . BEAMS UNDER REPEATED LOADINGS
Andrea CARPINTERI, Francesco ZAUPA
Istituto di Scienza e Tecnica delle Costruzioni,
Universita di Padova, Via Marzolo 9, 35131 Padova, Italy
ABSTRACT
When a reinforced concrete beam cross section is subjected to a cyclic
bending moment, the maximum bending moment being higher than that of
slippage or yielding of steel and lower than that of concrete fracture, a
shake-down phenomenon due to slippage or plastic deformation of the steel
reinforcement occurs. Up to a certain value of the bending moment the
shake-down is elastic; above this value, it becomes plastic and dissipa
tive .
