Abstract
We present a theory of dynamic fragmentation of brittle materials based on thermodynamic arguments. We recover the expressions for average fragment size and number as originally derived by Grady. We extend the previous work by obtaining descriptions of fragment size distribution and compressibility change due to the fragmentation process. The size distribution is assumed to be proportional to the spectral power of the strain history, and a sample distribution is presented for a fragmentation process corresponding to a constant rate strain history. The description of compressibility change should be useful in computational studies of fragmentation. These results should provide insight into the process of fragmentation of brittle materials from hypervelocity impact.
| Original language | English |
|---|---|
| Pages (from-to) | 385-394 |
| Number of pages | 10 |
| Journal | International Journal of Impact Engineering |
| Volume | 15 |
| Issue number | 4 |
| DOIs | |
| State | Published - Aug 1994 |
| Externally published | Yes |
Funding
Acknowledoements--The work has been supported in part by a grant NAG9-114 from the Johnson Space Center--NASA to the first author (CHY). The reported study was developed when the first author was with Sandia National Laboratories as a summer faculty member (1992). The hospitality of SNL is gratefully acknowledged.
| Funders | Funder number |
|---|---|
| National Aeronautics and Space Administration | |
| Johnson Space Center |