148
5 Projectile Penetrations into Coarse Aggregated UHPCC Targets
Projectile
Sphere aggregate
Mortar
Contours of
effective stress
Penetration tunnel
Front spalling
Rear crater
100µs
2 0 0 µs
4 0 0 µs
500µs
(a)
Projectile
Polyhedral aggregate
Mortar
Contours of
effective stress
Penetration tunnel
Front spalling
Rear crater
100µ
00µ
s
2
s
4 0 0 µs
500µs
(b)
Fig. 5.39 Effective stress contours of projectile perforating into concrete target plates with a sphere,
b polyhedral coarse aggregates, reprinted from Wu et al. (2019), copyright 2020, with permission
from Elsevier
numerical simulations to guarantee both the modelling efficiency and calculation
accuracy.
5.4.2 Validations
In this section, aiming to validate the 3D mesoscopic UHPC model with randomly
distributed sphere coarse aggregates and the corresponding constitutive parameters,
5 Projectile Penetrations into Coarse Aggregated UHPCC Targets
Projectile
Sphere aggregate
Mortar
Contours of
effective stress
Penetration tunnel
Front spalling
Rear crater
100µs
2 0 0 µs
4 0 0 µs
500µs
(a)
Projectile
Polyhedral aggregate
Mortar
Contours of
effective stress
Penetration tunnel
Front spalling
Rear crater
100µ
00µ
s
2
s
4 0 0 µs
500µs
(b)
Fig. 5.39 Effective stress contours of projectile perforating into concrete target plates with a sphere,
b polyhedral coarse aggregates, reprinted from Wu et al. (2019), copyright 2020, with permission
from Elsevier
numerical simulations to guarantee both the modelling efficiency and calculation
accuracy.
5.4.2 Validations
In this section, aiming to validate the 3D mesoscopic UHPC model with randomly
distributed sphere coarse aggregates and the corresponding constitutive parameters,