A microstructure-based constitutive model of anisotropic cellulose nanopaper with aligned nanofibers

Endowed with excellent mechanical properties, cellulose nanopaper provides a promising design strategy for addressing the dilemma between the strength and toughness of engineering materials. Anisotropic nanopaper with highly aligned nanofibers can achieve high mechanical properties. In this paper, we develop a multiscale tension-shear model that correlates both the strength and toughness with the microstructure to quantitatively understand the...