Crack-Tip Shielding in Particulate Composites Undergoing Damage
- Creators
-
Ravichandran, G.
- Liu, C. T.
Abstract
A simple rate-independent phenomenological constitutive model is used to model fracture behavior in elastic particulate composites undergoing damage. The constitutive model consists of two damage functions that govern the degradation of the bulk and the shear moduli. The elastic modulus is assumed to reach a saturation level under uniaxial conditions. Using the path independence of the J-integral and the concept of cracktip shielding, the remote or the applied stress intensity K∞ is related to the cracktip stress intensity factor K_t. The results from the model are used to predict the cracktip conditions in particulate composites undergoing damage. The model compares well with experimental results in predicting the crack opening profile as well as the displacement field in the vicinity of a cracktip.
Additional Information
© 1998 Elsevier Science Ltd. Received 12 August 1997, in final form 24 November 1997, accepted 1 December 1997. We gratefully acknowledge the support of the Air Force Office of Scientific Research for this investigation. We thank Dr Walter Jones for his interest and encouragement during the course of this investigation. We also thank Professor C. W. Smith for providing us with the experimental data.Additional details
- Eprint ID
- 55278
- Resolver ID
- CaltechAUTHORS:20150226-152529477
- Air Force Office of Scientific Research (AFOSR)
- Created
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2015-03-03Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field
- Caltech groups
- GALCIT