Abstract
Abstract The present paper reports a new stress and relative density dependent discrete dynamic compliance spectra method which may be used to model the creep behavior of nonlinear viscoelastic microcellular materials. Comparisons between model calculations and experimental measurements show that the model exhibits excellent quantitative agreement at all experimental stress-relative density states. A designer may use the present method to predict the creep strain resulting from a broad range of specific stress-relative density combinations, or to identify relative density ranges over which the material provides relatively stable creep properties.
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