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Mechanism study on vibration and noise reduction of circular saw with slots and filling material based on the theory of elastic wave

In order to obtain the mechanism of vibration and noise reduction of circular saws and perform further optimization design, based on the characteristic of propagation in the medium interface of blending wave, mechanism of vibration and noise reduction on circular saw blades with slots and filling materials was expounded from the view of transmission interruption and dissipation of elastic wave. The change of wave amplitude was calculated quantitatively based on the theory of propagation of blending wave when incident wave pass the filling material under the parametric excitation. The results show wave amplitude decreased sharply; filling material can absorb and interdict the vibration wave resulted from external excitation, so as to reduce the vibration and noise, the theory was verified by field test. That study provided new ideas and theoretical basis for the design of circular saw blade.