volume 33, issue 4, P193-201 1993
DOI: 10.1002/pen.760330402
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Abstract: Abstract A numerical simulation model for the analysis of the buildup and, the relaxation of molecular orientation in injection‐molded products has been developed. The constitutive equations of the material are described using an extended version of the viscoelastic material model developed by Leonov. The volumetric responses are described using two different equations of state, the Tait equation and an equation developed by Spencer and Gilmore. A WLF‐type of equation is used for the temperature and pressure …

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