| About this Abstract |
| Meeting |
Materials Science & Technology 2010
|
| Symposium
|
High Strain Rate Behaviors of Composites and Heterogeneous Materials: Experiments, Modeling, and Simulation
|
| Presentation Title |
Ductile/Brittle Laminate Response to Dynamic Loading |
| Author(s) |
Charles Ranodw |
| On-Site Speaker (Planned) |
Charles Ranodw |
| Abstract Scope |
Laminate metal composites created by alternating layers of titanium (Ti) and aluminum (Al), with hot-pressing to produce the intermetallic TiAl3, have shown an improved resistance to fracture with a reduction in density. More recently, layered Ti/TiAl3 plates have been ballistically tested, with superior performance observed using thicker layers (>5 mm) rather than thinner layers (<1 mm) for equivalent weight systems. Similar results were predicted using explicit finite element calculations making use of a recently modified constitutive model for TiAl3. In the present work, a number of numerical simulations were conducted with the goal of finding an optimal configuration of the laminate as well as understanding the effect of layer thickness. For example, the evolving shock structure in the ductile/brittle laminate is investigated and the relationship between projectile diameter and layer thickness is examined to determine when the laminate may be viewed as a relatively homogeneous body. |
| Proceedings Inclusion? |
Definite: A CD-only volume |