An improved interfacial bonding model for material interface modeling
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- 作者：Liqiang Lin ; Xiaodu Wang ; Xiaowei Zeng ; xiaowei.zeng@utsa.edu
- 关键词：Material interface modeling ; Interfacial bonding model ; Finite element simulation ; Polycrystalline structure ; Bone fracture
- 刊名：Engineering Fracture Mechanics
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：169
- 期：Complete
- 页码：276-291
- 全文大小：4132 K
- 卷排序：169
文摘
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 model 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.