Predicted results of the composite model and comparison with experiments

7 Predicted results of the composite model and comparison with experiments 

Composite modeling to simulate the stress-strain response and texture evolution in initially isotropic HDPE has been carried out for several different modes of straining. Of these modes, we present here only results for plane-strain 

While the experiments of Gal ski et al. were earried out at 80°C, for whieh our knowledge of the corresponding material eonstants and model parameters is not complete, the simulation of plane-strain eompression was performed using the room-temperature values of eonstants presented in Seetion 9.5.6 above. 

Plane-strain compression, which is very similar to uniaxial tension, belongs to a class of macroscopically irrotational large-strain deformations that differ quite significantly in their consequences from uniaxial compression and simple shear, as Fig. 9.28 shows. 

For purposes of comparison of the simulation results with the experimental observation we choose two examples. For the crystallographic texture, we choose 

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