Critique of macro flow/damage surface representations for metal matrix composites using micromechanics

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Abstract

Guidance for the formulation of robust, multiaxial, constitutive models for advanced materials is provided by addressing theoretical and experimental issues using micromechanics. The multiaxial response of metal matrix composites, depicted in terms of macro flow/damage surfaces, is predicted at room and elevated temperatures using an analytical micromechanical model that includes viscoplastic matrix response as well as fiber-matrix debonding. Macro flow/damage surfaces (i.e., debonding envelopes, matrix threshold surfaces, macro `yield' surfaces, surfaces of constant inelastic strain rate, and surfaces of constant dissipation rate) are determined for silicon carbide/titanium in three stress spaces. Residual stresses are shown to offset the centers of the flow/damage surfaces from the origin and their shape is significantly altered by debonding. The results indicate which type of flow/damage surfaces should be characterized and what loadings applied to provide the most meaningful experimental data for guiding theoretical model development and verification.

Original languageEnglish (US)
Title of host publicationAdvanced Materials: Development, Characterization Processing, and Mechanical Behavior
EditorsT. Nicholas
PublisherASME
Pages263
Number of pages1
Volume74
StatePublished - 1996
EventProceedings of the 1996 ASME International Mechanical Engineering Congress and Exposition - Atlanta, GA, USA
Duration: Nov 17 1996Nov 22 1996

Other

OtherProceedings of the 1996 ASME International Mechanical Engineering Congress and Exposition
CityAtlanta, GA, USA
Period11/17/9611/22/96

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Lissenden, III, C. J., & Arnold, S. M. (1996). Critique of macro flow/damage surface representations for metal matrix composites using micromechanics. In T. Nicholas (Ed.), Advanced Materials: Development, Characterization Processing, and Mechanical Behavior (Vol. 74, pp. 263). ASME.