Summary
To describe the constitutive behaviour of a certain class of polymer blends an elasto-perfectly-viscoplastic and creep damageable material characterization is proposed. For a composite of 80% Polystyrene and 20% Ethylene Propylene Diene Monomer rubber (PS/EPDM) the specific parameters are determined from tensile tests in a particular range of strain velocities. To investigate the applicability of the model, the results of a finite element analysis for a laterally loaded thin plate (plane stress) with a circular hole are compared to measurements. Numerically calculated values are in reasonable agreement with reality; discrepancies can be ascribed to noise in experimental data. The finite element approach is evaluated with respect to the occurrence of mesh-dependence. Mesh-refinement shows convergence of solutions, attributable to the stabilizing influence of the viscous contribution in the constitutive equations.
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© 1993 Springer Science+Business Media Dordrecht
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Timmermans, P.H.M., Brekelmans, W.A.M., De Vree, J.H.P. (1993). Phenomenological Modelling of Damage in Polymer Blends. In: Dijksman, J.F., Nieuwstadt, F.T.M. (eds) Topics in Applied Mechanics. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2090-6_15
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DOI: https://doi.org/10.1007/978-94-011-2090-6_15
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-4926-9
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