Effect of the influence of rheological beam longitudinal strains on the disc motion state

The paper analyzes the effect that the material of a simple rheological beam has on thedynamics of a moving disc. The hybrid system of the differential equations describing the motion of the systemdisc–rheological beam consisting of the integro-differential equation of beam longitudinal vibrationsand the Lagrange equations of the first kind, defining the motion of the disc, and the equationsof nonholonomic constraints following from the difference between the Lagrange coordinates of thedisc mass center and the beam point contacting with the disc is composed. The paper considersthe mode of the disc steady motion, allowing to integrate the equation of beam vibrations regardlessthe system of equations describing the motion of the disc. It is identified that when the disc movesat a low speed, and in the mode corresponding to the limit value of the relaxation time it causes physically inadequate strain in the beam. When relaxation time is null there is a steady mode of forced beamvibrations at moderate amplitudes.

nonholonomic connection, Dirac delta function, relaxation kernel, Laplace transformation