Influence of Loading Peak and Loading Rate on Twin Fibers Pullout Test of Concrete Matrix

Numerical analysis software based on linear finnite element method and statistical damage theory concrete material has been adopted in this study. Dynamic numerical model of twin fibers pullout test matrix have created by considering the meso-heterogeneity material. The whole process from micro-cracks initiation, propagation to crack penetration simulated. influence stress wave loading peak rate pull-out under dynamic load has, therefore, scrutinized. Results show that effect failure mode along interface specimens. With increasing rates, area increase either.