At very low stress levels (< 1 kbar), the short time response of polymeric materials is described as “glassy” and they are often modeled using linear elasticity. However, at higher stress levels, such simple models may not be applicable. The purpose of this paper is to present experimental observations of wave propagation in polymethyl methacrylate (PMMA) up to 60 kbar which indicate that such materials exhibit considerable non-linearities as well as significant rate-dependence. We compare numerical calculations based on both nonlinear elastic and nonlinear viscoelastic models with these observations.


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Copyright information

© Springer-Verlag Berlin Heidelberg 1975

Authors and Affiliations

  • K. W. Schuler
    • 1
  • J. W. Nunziato
    • 1
  1. 1.Sandia LaboratoriesAlbuquerqueUSA

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