Determination of Critical Speed in Ice Breaking by Air Cushion Vehicle
On the basis of the differential equation governing small flexure of thin elastic vibrating plate, the formula for calculating the phase velocity and group velocity of ice sheet wave propagation under the air cushion load is induced. The minimum of the phase velocity is the critical speed about ice breaking by air cushion vehicle (ACV). If ACV moves at the critical speed, the energy causing the deformation of ice sheet is concentrated constantly, thus the amplitude of the wave is enlarged enough to break the ice by resonance.
C. Wang et al., "Determination of Critical Speed in Ice Breaking by Air Cushion Vehicle", Applied Mechanics and Materials, Vols. 138-139, pp. 529-533, 2012