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An integrated material characterization-multiscale model for the prediction of strain to failure of heterogeneous aluminum alloys

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/45525

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dc.contributor.advisor Ghosh, Somnath
dc.creator Paquet, Daniel
dc.date.accessioned 2010-06-02T21:07:41Z
dc.date.available 2010-06-02T21:07:41Z
dc.date.issued 2010-05
dc.identifier.uri http://hdl.handle.net/1811/45525
dc.description Engineering: 2nd Place (The Ohio State University Edward F. Hayes Graduate Research Forum) en_US
dc.description.abstract Aluminum cast alloys and metal matrix composites are widely used in automotive, aerospace, nuclear and other engineering systems due to their advantageous strength/density properties. Their microstructure is characterized by a dispersion of hard and brittle heterogeneities in a softer aluminum matrix. The distribution, shape, and size of these heterogeneities affect their failure properties like fracture toughness and ductility in an adverse manner. Important micro-mechanical damage modes that are responsible for deterring the overall properties include particulate fragmentation, debonding at interfaces and ductile matrix failure due to void initiation, growth and coalescence. To address the needs of a robust methodology for ductility, a comprehensive model for deformation and failure of ductile materials integrating both a material characterization and a multiscale computational model has been developed. The material characterization is used as a preprocessor to the multiscale model and is an important step for the incorporation of microstructural features in predictions of strain to failure. The capabilities of the integrated material characterization-multiscale model are demonstrated for a cast aluminum alloy. en_US
dc.language.iso en_US en_US
dc.relation.ispartofseries 2010 Edward F. Hayes Graduate Research Forum. 24th en_US
dc.subject Ductile fracture en_US
dc.subject Finite element method en_US
dc.subject Voronoi cell finite element method en_US
dc.subject Concurrent multiscale model en_US
dc.subject Homogenization-based continuum plasticity-damage model en_US
dc.title An integrated material characterization-multiscale model for the prediction of strain to failure of heterogeneous aluminum alloys en_US
dc.type Article en_US
dc.description.embargo No embargo en_US