Ductile fracture computations with inertia and coalescence
Abstract
The SRI NAG (nucleation and growth) model for ductile microfracture(D. R. Curran et al, Physics Reports, 147, No. 5&6, pp. 253-388, 1987) has been augmented to include inertia effects in the void growth relation and also a simple model for void coalescence. The coalescence process was calibrated using the results of D. Benson(David J. Benson, J. Mech. Phys. Solids, Vol. 41, No. 8, pp. 1285-1308, 1993). These new features were examined by comparing results of simulations of plate impacts in aluminum with experimental data from the impacts. The experiments had resulted in low levels of damage, so neither inertia nor coalescence were very significant. Additional simulations of higher velocity impacts showed that both features can become important for very heavy damage.
- Publication:
-
APS Shock Compression of Condensed Matter Meeting Abstracts
- Pub Date:
- June 1999
- Bibcode:
- 1999APS..SHK..N202S