Identification of strain energy function for magneto elastomer from pseudo pure shear test under the variance of magnetic field

Magneto elastomers can respond to an applied magnetic field with an instantaneous change in the mechanical behavior. This novel behaviour is caused by consisting of micron-sized ferrous particles dispersed within an elastomeric matrix such as rubber and polymer. Recently magneto elastomers are used in the automobile application area such as the stiffness tunable mounts and suspension devices, see for example Kordonsky (1993), Carlson & Jolly (2000), Jolly et al. (1996) and Watson (1997). On the other hand, the constitutive equations governing deformations of these materials were recently discussed on various literatures, see for Brigadnov & Dorfmann (2003), Dorfmann & Ogden (2004, 2005), Kankanala & Triantafyllidis (2004), Steigmann (2004) and Bustamante et al. (2008).