Power-law viscous materials for analogue experiments: New data on the rheology of highly-filled silicone polymers

摘要: Abstract The selection of appropriate analogue materials is a central consideration in the design realistic physical models. We investigate rheology highly-filled silicone polymers order to find with power-law strain-rate softening suitable for modelling rock deformation by dislocation creep and report rheological properties as functions filler content. mixtures exhibit behaviour but increasing amounts become strain-dependent. For strain-independent viscous materials, flow laws are presented while strain-dependent relative importance strain rate softening/hardening reported. If stress or above threshold value some may be considered linear visco-elastic (strain independent) softening. exponent can raised from 1 ∼3 using high-viscosity plasticine. However, need high shear rates obtain imposes restrictions on usage such geodynamic modelling. Two simple experiments that use Newtonian materials. results demonstrate how result better localization experiments.