scholarly journals OS0120 Influence of particle size and debonding damage on elastic and elastic-plastic singular fields around a crack-tip in particulate-reinforced composites

2012 ◽  
Vol 2012 (0) ◽  
pp. _OS0120-1_-_OS0120-3_
Author(s):  
Keiichiro TOHGO ◽  
Tomoyuki FUJII ◽  
Daisuke KATO ◽  
Yoshinobu SHIMAMURA
Keyword(s):  
Particle Size ◽  
Crack Tip ◽  
Reinforced Composites ◽  
Elastic Plastic ◽  
Particulate Reinforced Composites ◽  
Particulate Reinforced

scholarly journals Analysis of Crack-Tip Field of Particulate-Reinforced Composites Taking Account of Particle Size Effect and Debonding Damage

2010 ◽  
Vol 452-453 ◽  
pp. 625-628
Author(s):  
Tomoyuki Fujii ◽  
Keiichiro Tohgo ◽  
Yu Itoh ◽  
Daisuke Kato ◽  
Yoshinobu Shimamura
Keyword(s):  
Particle Size ◽  
Size Effect ◽  
Crack Tip ◽  
Energy Criterion ◽  
Particle Size Effect ◽  
Reinforced Composites ◽  
Crack Tip Field ◽  
Damage Area ◽  
Particulate Reinforced Composites ◽  
Particulate Reinforced

This paper deals with an analysis of a crack-tip field of particulate-reinforced composites which can describe the evolution of debonding damage, matrix plasticity and particle size effect on deformation and damage. Numerical analyses were carried out on a crack-tip field in elastic-plastic matrix composites reinforced with elastic particles by using a finite element method developed based on an incremental damage theory. The particle size effect on damage is described by a critical energy criterion for particle-matrix interfacial debonding. The effect of debonding damage on a crack-tip field is discussed based on numerical results. The debonding damage initiates and progresses ahead of a crack-tip. The stress distribution shifts downward in the debonding damage area. It is concluded that a crack-tip field is strongly affected by debonding damage.

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