Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
774557 | European Journal of Mechanics - A/Solids | 2006 | 14 Pages |
Abstract
A stress softening, commonly known as the Mullins effect, is observed usually in filled rubberlike materials after the first load. Experimental observations have shown that the Mullins effect induces a permanent set and some anisotropy. In order to account for these two features, a strain energy density is proposed, which is based on material directions and coupled with a theory for network alteration. The constitutive law is based on a macromolecular approach, and the network alteration theory is motivated physically. The model has been compared to experimental data successfully.
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