Stress relaxation in the transition from shear thinning to shear jamming in shear thickening fluid

The rheological measurement was adopted to study the relationship between the stress relaxation phenomenon and the internal structure of shear thickening fluid (STF). Based on particle chain network, the viscoelastic model successfully predicted the stress relaxation and agreed well with experimental results. By investigating the stress relaxation behavior, it was found the transition from continuous shear thickening to discontinuous shear thickening could occur not only by increasing the volume fraction φ but also by increasing the shear rate γ ̇ and shear time ts. The phase diagram in the φ - γ ̇ plane revealed the structure transition of STF under shear.