A thermodynamic theory of dynamic fragmentation
- Texas Univ., Austin, TX (United States)
- Sandia National Labs., Albuquerque, NM (United States)
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.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); National Aeronautics and Space Administration, Washington, DC (United States)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 10183344
- Report Number(s):
- SAND-93-0887C; CONF-931121-18; ON: DE93019066; CNN: Grant NAG9-114
- Resource Relation:
- Conference: Annual winter meeting of the American Society of Mechanical Engineers,New Orleans, LA (United States),28 Nov - 3 Dec 1993; Other Information: PBD: [1993]
- Country of Publication:
- United States
- Language:
- English
Similar Records
Strain-energy effects on dynamic fragmentation
Stability and fragmentation of ejecta in hypervelocity impact