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Open AccessArticle

Finite Element Modeling of Tensile Deformation Behaviors of Iron Syntactic Foam with Hollow Glass Microspheres

by Yi Je Cho 1, Wookjin Lee 2,* and Yong Ho Park 1,*
1
Department of Materials Science and Engineering, Pusan National University, Busandaehak-ro 63beon-gil 2, Busan 46241, Korea
2
Korea Institute of Industrial Technology (KITECH), Namyangsan 1-gil 14, Yangsan 50635, Korea
*
Authors to whom correspondence should be addressed.
Materials 2017, 10(10), 1201; https://doi.org/10.3390/ma10101201
Received: 18 August 2017 / Revised: 12 October 2017 / Accepted: 17 October 2017 / Published: 19 October 2017
The elastoplastic deformation behaviors of hollow glass microspheres/iron syntactic foam under tension were modeled using a representative volume element (RVE) approach. The three-dimensional microstructures of the iron syntactic foam with 5 wt % glass microspheres were reconstructed using the random sequential adsorption algorithm. The constitutive behavior of the elastoplasticity in the iron matrix and the elastic-brittle failure for the glass microsphere were simulated in the models. An appropriate RVE size was statistically determined by evaluating elastic modulus, Poisson’s ratio, and yield strength in terms of model sizes and boundary conditions. The model was validated by the agreement with experimental findings. The tensile deformation mechanism of the syntactic foam considering the fracture of the microspheres was then investigated. In addition, the feasibility of introducing the interfacial deboning behavior to the proposed model was briefly investigated to improve the accuracy in depicting fracture behaviors of the syntactic foam. It is thought that the modeling techniques and the model itself have major potential for applications not only in the study of hollow glass microspheres/iron syntactic foams, but also for the design of composites with a high modulus matrix and high strength reinforcement. View Full-Text
Keywords: iron syntactic foam; glass microsphere; representative volume element; finite element method; tensile deformation iron syntactic foam; glass microsphere; representative volume element; finite element method; tensile deformation
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Cho, Y.J.; Lee, W.; Park, Y.H. Finite Element Modeling of Tensile Deformation Behaviors of Iron Syntactic Foam with Hollow Glass Microspheres. Materials 2017, 10, 1201.

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