Zy. He, THE MULTIPLICATION OF DEFORMED REGION AND THE YIELD MODEL OF POLYMERS, International journal of polymeric materials, 28(1-4), 1995, pp. 199-209
According to the analysis of the micro-deformation process of polymers
, the author proposes a new concept of deformed region multiplication,
from which an explicit elastic-plastic constitutive equation can be d
educed. The characteristics of stress-strain curve in different condit
ions are discussed, which conform better the experimental results.