LEVER TIES IN VIBRATION SHAKER DYNAMIC STATE CORRECTION PROBLEMS

Abstract

A special adjustment of vibration fields is required for vibrational technological processes where loose working medium interacts with the large-size parts being machined, for example, helicopter blades. The PURPOSE of the research is to develop a method for constructing mathematical models ensuring the formation of homogeneous vibrational fields through introducing of additional constraints into systems. The article shows constructive and technical possibilities of implementing such approaches. METHODS. The authors propose an adjustment method for a vibration shaker, the working element of which can perform flat oscillations creating the structure of a uniform vibrational field or the field close to it in certain frequency ranges. The paper uses the methods of structural mathematical modeling and the analytical tools of the theory of automatic control. RESULTS. The article presents the results of the computational experiment. The analytic relations are proposed for adjusting the vibration shaker parameters. CONCLUSIONS. The idea of the developed approach is to introduce the mechanisms in the structure of the vibration shaker as additional constraints that have the potential to change the reduced masses and stiffness of the system. A method for determining system parameters ensuring a homogeneous structure of the vibrational field under the action of two inertial exciters has been developed on the basis of the use of transfer functions of inter-partial ties.