An improved interfacial bonding model for material interface modeling




Lin, Liqiang
Wang, Xiaodu
Zeng, Xiaowei

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An improved interfacial bonding model was proposed from potential function point of view to investigate interfacial interactions in polycrystalline materials. It characterizes both attractive and repulsive interfacial interactions and can be applied to model different material interfaces. The path dependence of work-of-separation study indicates that the transformation of separation work is smooth in normal and tangential direction and the proposed mode guarantees the consistency of the cohesive constitutive model. The improved interfacial bonding model was verified through a simple compression test in a standard hexagonal structure. The error between analytical solutions and numerical results from the proposed model is reasonable in linear elastic region. Ultimately, we investigated the mechanical behavior of extrafibrillar matrix in bone and the simulation results agreed well with experimental observations of bone fracture.


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material interface modeling, Interfacial bonding model, Finite Element stimulation, Polycrystalline structure, Bone fracture


Lin, L., Wang, X., & Zeng, X. (2017). An improved interfacial bonding model for material interface modeling. Engineering fracture mechanics, 169, 276-291.


Mechanical Engineering