We propose a predictive model for the dissipative behaviour of rubber-like materials. In the spirit of De Tommasi et al. [D. De Tommasi, G. Puglisi, G. Saccomandi, A micromechanics based model for the Mullins effect, J. Rheol. 50 (2006) 495– 512], we assume that at the scale of the polymeric network the material is constituted by a distribution of links with variable activation and fracture thresholds. By considering the recross-linking effect due to unloading we obtain a three-dimensional, non-linear damage model that describes the rate-independent hysteretic behaviour observed in rubber-like solids. The feasibility of the model in treating complex non-homogeneous deformation histories is shown through a numerical application.
|Autori interni:||DE TOMMASI, Domenico|
|Titolo:||A phenomenological model for healing and hysteresis in rubber-like materials|
|Rivista:||INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE|
|Data di pubblicazione:||2008|
|Digital Object Identifier (DOI):||10.1016/j.ijengsci.2007.12.002|
|Appare nelle tipologie:||1.1 Articolo in rivista|