Summary
In this contribution, the mechanical behaviour of different ZrO2/NiCr 80 20 compositions is analysed and compared with experimental findings. The microwave-sintered material is found to possess a slightly dominant ceramic matrix for intermediate volume fractions. Its thermal expansion coefficient deviates from the rule of mixture. The modulus and the stress strain behaviour can be simulated by a numerical homogenization procedure, and the influence of residual stresses is found to be negligible. A newly introduced parameter (matricity) describes the mutual circumvention of the phases and is found to strongly control the stress level of the composite, globally as well as locally. Finally, a graded component and a metal/ceramic bi-material are compared for thermal as well as mechanical loading.
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Received 23 November 1999; accepted for publication 26 May 2000
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Schmauder, S., Weber, U. Modelling of functionally graded materials by numerical homogenization. Archive of Applied Mechanics 71, 182–192 (2001). https://doi.org/10.1007/s004190000124
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DOI: https://doi.org/10.1007/s004190000124