Figure 5.

The bending moment diagram of the circle resonator simplified mechanics model after removing the constraints at the lumped masses symmetric axes. (a) Simulating external forces under the anti-phase drive mode; (b) Simulating external forces under the anti-phase sense mode; (c) Simulating external forces under lumped mass twisting motion coupling with anti-phase sense mode; (d) Assuming internal forces along the tangential orientation; (e) Assuming internal forces along the radial of the symmetric center; (f) Assuming internal forces along the lumped mass twisting motion.