Abstract
On the problem of vibration protection of rotor systems with elastic adaptive elements of quasi-zero stiffness
Highlights
Improving the efficiency of rotor systems while reducing their mass and dimensions is connected to the need to increase the rotor speed
An important advantage of systems based on piezoceramic elements is a fairly low energy dependence
Specific values of the design parameters of elastic supports with controlled quasi-zero stiffness in the form of adaptive piezoceramic elements can be obtained based on numerical methods
Summary
Improving the efficiency of rotor systems while reducing their mass and dimensions is connected to the need to increase the rotor speed. The operating rotational speeds of the rotor systems of many modern machines are higher than the first natural frequencies. During acceleration and braking, the rotor passes through several resonances, accompanied by significant dynamic loads, which can lead to the destruction of the machine. For reducing bearings overload and amplitudes of oscillations at operating speeds and when passing through critical ones is using elastic supports. Such supports with an undeniable advantage in the form of simplicity of design, are not able to instantly and within the necessary limits change the stiffness when the rotor passes through resonance
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