Frequency-Domain Analysis of the Euler-Bernoulli and Timoshenko Beams with Attached Masses

Abstract: This work is focused on the frequency-domain modeling of a simply supported flexible beam with an attached mass in the presence of dissipation. The considered system is equipped with a spring-loaded control actuator and possesses local damping effect. With the help of Hamilton's variational principle, the equations of motion are derived in the state space form with account of interface conditions involving lumped control and local damping. The transfer functions are obtained for Timoshenko and Euler--Bernoulli beam models with the output measurements provided by a sensor. Comparative Bode plots are presented for the two beam models with different choices of damping coefficients.