To describe the constitutive behaviour of a certain class of polymer blends an elastoperfectly-viscoplastic and creep damageable material characterization is proposed. For a composite of 80 % Polystyrene and 20 % Ethylene Propylene Diene Monomer rubber (PSIEPDM) 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.
|Title of host publication||Topics in applied mechanics : integration of theory and applications in applied mechanics|
|Place of Publication||Dordrecht|
|Publisher||Kluwer Academic Publishers|
|Publication status||Published - 1993|
|Event||conference; 2nd National mechanics conference, November 1992, Kerkrade, The Netherlands - |
Duration: 1 Jan 1993 → …
|Conference||conference; 2nd National mechanics conference, November 1992, Kerkrade, The Netherlands|
|Period||1/01/93 → …|
|Other||2nd National mechanics conference, November 1992, Kerkrade, The Netherlands|
Timmermans, P. H. M., Brekelmans, W. A. M., & Vree, de, J. H. P. (1993). Phenomenological modelling of damage in polymer blends. In Topics in applied mechanics : integration of theory and applications in applied mechanics (pp. 147-154). Kluwer Academic Publishers.