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Recycled Stone/ABS particulate composite: Micromechanical finite element fracture analysis.

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Bibliographic Details
Title: Recycled Stone/ABS particulate composite: Micromechanical finite element fracture analysis.
Authors: Karimi, D.1 (AUTHOR) d_karimi@irost.ir, Milani, A.S.1,2 (AUTHOR) abbas.milani@ubc.ca, Alavi, F.3 (AUTHOR)
Source: Composites: Part B, Engineering. Nov2019, Vol. 177, pN.PAG-N.PAG. 1p.
Subjects: Cohesive strength (Mechanics), Finite element method, Fracture mechanics, Stone, Human behavior models
Abstract: New stone composite samples, fabricated using nano- to micro-sized recycled granite particles with irregular shapes and random distribution within a ABS matrix, demonstrate a highly nonlinear and complex fracture behavior. To model this behavior, a mixed mode cohesive zone finite element model is identified using the single-leg bending (SLB), in order to represent the granite particles-ABS interfacial debonding. An inverse methodology is then proposed to determine the parameters of the cohesive zone (CZM). A direct method based on J-integral approach is employed to determine the effective parameters of the traction-separation law. A two dimensional micromechanical extended finite element model (XFEM) of the composite is generated using X-ray micro-computed tomography (XMT) to mimic the actual shape of the particles. Finally, the identified cohesive model parameters have been employed to simulate the crack growth within the granite particulates/ABS composite. The comparison of the numerical and experimental results of the SLB test demonstrated the effectiveness of the proposed simulation framework. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:New stone composite samples, fabricated using nano- to micro-sized recycled granite particles with irregular shapes and random distribution within a ABS matrix, demonstrate a highly nonlinear and complex fracture behavior. To model this behavior, a mixed mode cohesive zone finite element model is identified using the single-leg bending (SLB), in order to represent the granite particles-ABS interfacial debonding. An inverse methodology is then proposed to determine the parameters of the cohesive zone (CZM). A direct method based on J-integral approach is employed to determine the effective parameters of the traction-separation law. A two dimensional micromechanical extended finite element model (XFEM) of the composite is generated using X-ray micro-computed tomography (XMT) to mimic the actual shape of the particles. Finally, the identified cohesive model parameters have been employed to simulate the crack growth within the granite particulates/ABS composite. The comparison of the numerical and experimental results of the SLB test demonstrated the effectiveness of the proposed simulation framework. [ABSTRACT FROM AUTHOR]
ISSN:13598368
DOI:10.1016/j.compositesb.2019.107315