Macroscopic constitutive relationship is estimated by considering the microscopic particle/matrix interfacial debonding. For the interfacial debonding, the PPR potential-based cohesive model is utilized. The extended Mori-Tanaka model is employed for micromechanics, while a finite element-based cohesive zone model is used for the computational model. Both models (theoretical and computational) agree well each other in representing the macroscopic constitutive relationship on the basis of the PPR model. The microscopic interfacial cohesive parameters of the PPR model are estimated from macroscopic composite material behavior. In addition, different microscopic debonding processes are observed with respect to different macroscopic constitutive relationships (e.g. hardening, softening, and snap-back).
Bibliographical noteFunding Information:
The authors acknowledge support from the National Science Foundation (NSF) through Grant #0800805 . Duc Ngo also acknowledges support from Vietnam Education Foundation (VEF). The information presented in this paper is the sole opinion of the authors and does not necessarily reflect the views of the sponsoring agencies. Finally, the authors thank the anonymous reviewers for constructive and thorough revision of the work.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering