Image-based modelling of binary composites

► We present an approach to generate a finite element mesh from a microstructural image. ► The approach captures the stress and strain concentrations in the microstructure which govern damage and failure. ► A direct comparison with in situ fracture tests is possible and an example is included. A sim...

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Veröffentlicht in:Computational materials science Jg. 64; S. 183 - 186
Hauptverfasser: Tarleton, E., Charalambides, M.N., Leppard, C.
Format: Journal Article Tagungsbericht
Sprache:Englisch
Veröffentlicht: Amsterdam Elsevier B.V 01.11.2012
Elsevier
Schlagworte:
Algorithms
Applied sciences
Binary composites
Composites
Exact sciences and technology
FEM
Finite element method
Forms of application and semi-finished materials
Image based mesh
Mathematical analysis
Mathematical models
Micromechanics
Particle-matrix interfaces
Particulate composites
Polygons
Polymer industry, paints, wood
Polymethyl methacrylates
Technology of polymers
Micromechanics
Binary composites
Image based mesh
FEM
Aluminium oxide
Refractory material
Methyl methacrylate polymer
Dispersion reinforced material
Modeling
Composite material
Finite element method
Particle matrix interface
Binary image
Delamination
ISSN:0927-0256, 1879-0801
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Zusammenfassung:► We present an approach to generate a finite element mesh from a microstructural image. ► The approach captures the stress and strain concentrations in the microstructure which govern damage and failure. ► A direct comparison with in situ fracture tests is possible and an example is included. A simple algorithm has been developed which is easy to implement and is capable of converting a microstructural image of a binary composite into a finite element mesh. The image is morphologically reconstructed as a set of arbitrarily shaped polygons to represent the particles. The pixel connectivity is used to identify each polygon, which is expressed as a set of ordered points. This geometric information is then used to partition the finite element mesh. This was achieved by using the Abaqus python scripting interface. Cohesive elements were assigned along the particle–matrix interface to allow debonding to be studied. This approach was used to model a fire resistant particulate composite poly(methyl methacrylate)/alumina trihydrate (PMMA/ATH).
Bibliographie:ObjectType-Article-1
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content type line 23
ISSN:0927-0256
1879-0801
DOI:10.1016/j.commatsci.2012.02.046