ABSTRACT
A few constitutive models have started to explore the modifications needed to capture the deformation-induced anisotropy, also known as the Mullins effect (Ogden and Roxburgh, 1999, Diani et al., 2006, Chai et al., 2013), but in general the available experimental data is limited. For this reason, in this study we focus on carrying out careful measurements of the anisotropy of swelling in a wide range of filled elastomers, including both compression-moulded and rolled rubber sheets. After measurement of the process-induced anisotropy, the deformation-induced anisotropy under both uniaxial and equibiaxial deformations is presented and compared.
