| EPSRC Reference: |
GR/J95188/01 |
| Title: |
COMBINED MICRO AND MACRO MODELS FOR COMPONENT DESIGN WITH 3D DEFORMATION DAMAGE IN METAL MATRIX COMPOSITES. |
| Principal Investigator: |
Hayhurst, Professor DR |
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| Department: |
Mechanical, Aerospace & Manufac Eng |
| Organisation: |
UMIST |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 October 1993 |
Ends: |
30 September 1996 |
Value (£): |
153,645
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| EPSRC Research Topic Classifications: |
| Eng. Dynamics & Tribology |
Materials Characterisation |
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Summary on Grant Application Form |
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The research concerns the establishment of physics-based models for the deformation, damage, and fracture of Sic-Al metal matrix composites which undergo elasto-plastic deformations under uniform temperatures. Computer-based micro-modelling techniques will be used to study particle matrix interactions at the single particle level; and, will then be generalised, using classical mechanics techniques, to study the behaviour at the composite level. The model will cater for both uni- and multi-axial stress systems. The initiation and growth of failure, at the composite level, will be modelled using continuum damage mechanics, and the constitutive equations so developed will be suitable for use in finite element component analysis. They will also be capable of handling thermo-mechanical loadings. The model will take account of the effects of particle voume fractions, spacings, shape, orientations and clustering on the global deformation, damage and fracture properties of the composite. Experiments will be carried out to provide input data for the model, both to complement data from the literature, and to provide microstructural evidence to guide the development of the model. Axi-symmetrically notched tension bars will be tested to study the behaviour of the material under tri-axial stresses, to stimulate the behaviour of stress concentrators in notched engineering components; and to validate model predictions.
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Key Findings |
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Potential use in non-academic contexts |
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Impacts |
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| Description |
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| Summary |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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