RESPONSE OF THIXOTROPY FLUID UNDER OSCILLATORY LOADING

The constitutive equation of thixotropic fluid was of the Moore'smodel in this paper. The mechanical behaviors under oscillatory loadingwere discussed. The finite difference method was used. The results show that: 1) In the steady state, the parameter whichdescribed the internal structural state in the fluid was the periodicfunction of time; 2) The relation between the stress and the strain was aclosed hysteretic cycle. These properties show that the thixotropicfluid is much more complex than the other non-Newtonian fluids.