High strain rate compressive behaviour of a Silicone elastomer

Siviour CR, Proud WG, Salisbury DA, Winter RE

The high strain rate compressive behaviour of a Silicone elastomer: Sylgard 184® is presented. Experiments were performed over strain rates between 3000 and 15,000 s-1, and temperatures between -40 and +73 °C, corresponding to environmental conditions in many industrial applications. An Ogden strain energy density function was fit to the data, and the strain rate and temperature dependence of the shear modulus was evaluated. Use of a time-temperature superposition showed that this modulus was approximately constant at lower strain rates or higher temperatures, but increases at low temperature or high strain rate due to a transition, which is also seen in DMA tests on the material. © 2008 Society for Experimental Mechanics Inc.