Abstract
In this study, the failure mechanism of glass particle epoxy composites was investigated under compression and sliding wear. Random fiber distribution with minimum interfiber distance was modeled by representative volume elements (RVEs). Spherical and platelet type glass particles were used for the reinforcements. A numerical simulation of the elastic properties of composites was performed for a perfectly bonded interface, and the results were compared using the Mori Tanaka mean field approach. The elastic stiffness results indicated that the platelet reinforced composites bore more load than spherical ones because of the aspect ratio effects. The separation distance based cohesive zone model was applied to modeling the failure zone at the particle matrix interfaces to establish sliding wear. The effect of the perfectly bonded interface and the cohesive zone interface on overall stiffness and elasto-plastic behavior were discussed. The cohesive zone interface was found to be effective at the interface in terms of the strength and debonding characteristics of the composites. The results were compared with the sliding wear test results of glass particle reinforced composites. The numerical and sliding wear experimental results indicated that matrix yield stress, plastic strain, particle penetration at the contact interface and particle stress are found to be effective parameters for the debonding mechanism.
About the author
Assist. Prof. Dr. Sait Ozmen Eruslu, born in 1977, works at Namık Kemal University, Corlu, Tekirdağ in Turkey. He received his BSc in the Mechanical Engineering Department Faculty of Engineering, Suleyman Demirel University, Isparta, Turkey, in 1999, his MSc in the Construction Design Program of the Institute of Science, Dokuz Eylül University, İzmir, Turkey in 2001 and his PhD in Mechanical Engineering Department Institute of Science, Trakya University, Edirne, Turkey in 2008. His research interests include finite element modeling, material mechanics, and composite material mechanics.
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