Linear vibrations of frames carrying a concentrated mass (Q1011924)

Summary: We investigate free and forced in-plane and out-of-plane vibrations of frames. We consider a beam with a straight and a curved part and with a circular cross-section. A concentrated mass can be located at different points of the frame with different mass ratios. We use the finite element method to analyze the problem. The in-plane and out-of-plane natural frequencies and point and transfer functions of the system are obtained to determine the sensitive and non-sensitive frequency intervals depending on the location and direction of the force.