DYNAMIC STABILITY OF ELASTICALLY CONSTRAINED BEAMS - AN EXACT APPROACH

Finds the regions of dynamic instability of elastic beams constrained at the ends by means of translational and rotational elastic springs, using the equation of boundary frequencies. Obtains the diagrams showi ng the regions of instability of the beam, as a function of the dynami c component of the periodic forcing function and its frequency, from t hat equation in exact form. In this procedure inertial, stiffness and constraint characteristics of the examined system are taken into accou nt. Presents selected applications concerning the analysed problem.