An improved interfacial bonding model for material interface modeling

Lin, Liqiang; Wang, Xiaodu; Zeng, Xiaowei

doi:10.1016/j.engfracmech.2016.10.015

Cited by 14 publications

(10 citation statements)

References 62 publications

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“…5). Based on the previous convergence test of similar models (Lin et al, 2017; Lin et al, 2016), the mesh size in current work is around 150nm and the time step is Δ t = l× 10 −10 s. We have plotted the stress-strain curves after calculations, the stress-strain curves in the early post yield state agreed well with experimental measurements as shown in Fig. 7.…”

Section: Numerical Simulationssupporting

confidence: 63%

Computational modeling of interfacial behaviors in nanocomposite materials

Lin

Wang

Zeng

2017

International Journal of Solids and Structures

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Towards understanding the bulk material response in nanocomposites, an interfacial zone model was proposed to define a variety of material interface behaviors (e.g. brittle, ductile, rubber-like, elastic-perfectly plastic behavior etc.). It also has the capability to predict bulk material response though independently control of the interface properties (e.g. stiffness, strength, toughness). The mechanical response of granular nanocomposite (i.e. nacre) was investigated through modeling the “relatively soft” organic interface as an interfacial zone among “hard” mineral tablets and simulation results were compared with experimental measurements of stress-strain curves in tension and compression tests. Through modeling varies material interfaces, we found out that the bulk material response of granular nanocomposite was regulated by the interfacial behaviors. This interfacial zone model provides a possible numerical tool for qualitatively understanding of structure-property relationships through material interface design.

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Section: Numerical Simulationssupporting

confidence: 63%

Computational modeling of interfacial behaviors in nanocomposite materials

Lin

Wang

Zeng

2017

International Journal of Solids and Structures

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“…The interfacial zone is widely used to study composite material failure process [27][28][29][30][31][32][33][34][35]. The proposed interfacial zone model provides a numerical tool to study material response through defining different material interface behaviors [35,36]. Figure 2 shows the traction-separation relations in surface normal and tangential directions, which were used to govern the interfacial behaviors.…”

Section: Interfacial Zone Modelmentioning

confidence: 99%

Computational Investigation of Crack-Induced Hot-Spot Generation in Energetic Composites

et al. 2021

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The sensitivity of polymer-bonded explosives (PBXs) can be tuned through adjusting binder material and its volume fraction, crystal composition and morphology. To obtain a better understanding of the correlation between grain-level failure and hot-spot generation in this kind of energetic composites as they undergo mechanical and thermal processes subsequent to impact, a recently developed interfacial cohesive zone model (ICZM) was used to study the dynamic response of polymer-bonded explosives. The ICZM can capture the contributions of deformation and fracture of the binder phase as well as interfacial debonding and subsequent friction on hot-spot generation. In this study, a two-dimensional (2D) finite element (FE) computational model of energetic composite was developed. The proposed computational model has been applied to simulate hot-spot generation in polymer-bonded explosives with different grain volume fraction under dynamic loading. Our simulation showed that the increase of binder phase material volume fraction will decrease the local heat generation, resulting in a lower temperature in the specimen.

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“…Some authors have developed cohesive zone models to simulate material interface behaviour at different length scales in bone [9,[36][37][38][39]. For example, Lin et al [36] recently defined a cohesive zone model to define the mechanical behaviour at the nanoscale of the extrafibrillar matrix in bone, the interfacial interactions in a simplified hexagonal-based model under compression loading [36]. On the other hand, Cox and Yang [39] formulated a cohesive fracture model and applied it to human femoral cortical bone data.…”

Section: At Different Scales)mentioning

confidence: 99%

A heterogeneous orientation criterion for crack modelling in cortical bone using a phantom-node approach

Marco

Belda

Miguélez

et al. 2018

Finite Elements in Analysis and Design

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Cortical bone can be considered as a heterogeneous composite at microscopic scale, composed of osteons that act as reinforcement fibres embedded in interstitial matrix. Cement lines constitute the interface between osteons and matrix, and they often behave as the weakest links along which microcracks tend to propagate. However, current simulations of crack growth using XFEM combined with usual orientation criteria as implemented in commercial codes do not capture this behaviour: they predict crack paths that do not follow the cement lines surrounding osteons. The reason is that the orientation criterion used in the implementation of XFEM does not take into account the heterogeneity of the material, leading to simulations that differ from experimental results. In this work, a crack orientation criterion for heterogeneous materials based on interface damage prediction in composites is proposed and a phantom node approach has been implemented to model crack propagation. The method has been validated by means of linear elastic fracture mechanics (LEFM) problems obtaining accurate results. The procedure is applied to different problems including several osteons with simplified 2 geometry and an experimental test reported in the literature leading to satisfactory predictions of crack paths.

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An improved interfacial bonding model for material interface modeling

Cited by 14 publications

References 62 publications

Computational modeling of interfacial behaviors in nanocomposite materials

Computational modeling of interfacial behaviors in nanocomposite materials

Computational Investigation of Crack-Induced Hot-Spot Generation in Energetic Composites

A heterogeneous orientation criterion for crack modelling in cortical bone using a phantom-node approach

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