How to define the storage and loss moduli for a rheologically nonlinear material?
arXiv:1702.05175 · doi:10.1007/s00161-017-0584-8
Abstract
A large amplitude oscillatory shear (LAOS) is considered in the strain-controlled regime, and the interrelation between the Fourier transform (FT) and the stress decomposition (SD) approaches is established. Several definitions of the generalized storage and loss moduli are examined in a unified conceptual scheme based on the Lissajous--Bowditch plots. An illustrative example of evaluating the generalized moduli from a LAOS flow is given.
8 pages, 5 figures, 1 table