| 摘要 |
PROBLEM TO BE SOLVED: To provide a viscoelasticity measuring method and viscoelasticity measuring device for measuring not only linear viscosity and linear elasticity but also non-linear viscosity and non-linear elasticity by causing self-excited oscillation to an oscillating body by using both linear velocity feedback and non-linear velocity feedback.SOLUTION: A viscoelasticity measuring apparatus 100 drives an actuator 6 by using both linear velocity feedback and non-linear velocity feedback, gives control force Fv based on a feedback signal to an oscillating body 1 in contact with a viscoelastic body, and causes self-excited oscillation to the oscillating body 1. A physical amount related to oscillation of the oscillating body 1 when linear velocity feedback gain Gand non-linear feedback gain Gare changed is measured, and on the basis of the physical amount and a dynamic model for modelling the oscillating body 1 as a spring-mass-dashpot system, linear and non-linear viscosity and elasticity of the viscoelastic body are measured. |
