Kumar P, Steinmann P, Mergheim J (2021)
Publication Type: Journal article
Publication year: 2021
DOI: 10.1007/s00466-021-02037-x
Several experimental investigations corroborate nanosized inclusions as being much more efficient reinforcements for strengthening polymers as compared to their microsized counterparts. The inadequacy of the standard first-order computational homogenization scheme, by virtue of lack of the requisite length scale to model such size effects, necessitates enhancements to the standard scheme. In this work, a thorough assessment of one such extension based on the idea of interface energetics is conducted. Systematic numerical experimentation and analysis demonstrate the limitation of the aforementioned approach in modeling mechanical behavior of composite materials where the filler material is much stiffer than the matrix. An alternative approach based on the idea of continuously graded interphases is introduced. Comprehensive evaluation of this technique by means of representative numerical examples reveals it to be the appropriate one for modeling nano-composite materials with different filler-matrix stiffness combinations.
APA:
Kumar, P., Steinmann, P., & Mergheim, J. (2021). Enhanced computational homogenization techniques for modelling size effects in polymer composites. Computational Mechanics. https://dx.doi.org/10.1007/s00466-021-02037-x
MLA:
Kumar, Paras, Paul Steinmann, and Julia Mergheim. "Enhanced computational homogenization techniques for modelling size effects in polymer composites." Computational Mechanics (2021).
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