dc.contributor.author |
Hazell, P. J. |
- |
dc.contributor.author |
Iremonger, M. J. |
- |
dc.date.accessioned |
2011-06-14T23:28:27Z |
|
dc.date.available |
2011-06-14T23:28:27Z |
|
dc.date.issued |
1997-12-31T00:00:00Z |
- |
dc.identifier.issn |
0021-8979 |
- |
dc.identifier.uri |
http://dx.doi.org/10.1063/1.365875 |
- |
dc.identifier.uri |
http://dspace.lib.cranfield.ac.uk/handle/1826/5506 |
|
dc.description.abstract |
A physically based crack softening damage model has been developed and used in a
non-linear transient dynamic computer code (AUTODYN-2D). It is assumed that
there is a finite number of orientated pre-existing flaws within the ceramic
target. The mode I and mode II stress intensity factors are calculated in
compression and tension and the strain energy release rate is then estimated and
compared to a critical dynamic strain energy release rate. At initiation, a
tension crack propagates at a velocity dependent on the mode I stress intensity
factor and failure occurs in a computational cell when two neighbouring
microcracks coalesce. The model was used to simulate two different plate impact
experiments of alumina on alumina with encouraging results. The model was also
used to analyze the impact of a steel sphere on alumina and shows strong
correlation between experimental and predicted results. |
en_UK |
dc.language.iso |
en_UK |
en_UK |
dc.publisher |
American Institute of Physics |
en_UK |
dc.subject |
hydrocode modelling |
en_UK |
dc.subject |
fracture |
en_UK |
dc.subject |
ceramics |
en_UK |
dc.subject |
impact |
en_UK |
dc.subject |
penetration |
en_UK |
dc.title |
Crack softening damage model for ceramic impact and its application within a
hydrocode |
en_UK |
dc.type |
Article |
en_UK |