Dependence of fracture size effect and projectile penetration on fiber content of FRC

摘要

The microplane constitutive model M7f for fiber reinforced concrete(FRC),previously calibrated by extensive material test data,is used in computational simulations of the size effect in geometrically similar notched specimens,and in simulations of penetration of projectiles into FRC targets.The MTf microplane model for fiber reinforced concrete is calibrated at the material level and then used to predict structural level behavior.The results show that,for any fiber volume ratio,the Type 2 size effect must be expected.