ASA 127th Meeting M.I.T. 1994 June 6-10

1aSA12. Vibration containment by structural joints.

Yueping Guo

Dept. of Ocean Eng., MIT, Cambridge, MA 02139

In controlling vibrations in elastic structures such as trusses, damping treatment is sometimes applied only in parts of the overall structure. In this case, it is important to confine vibrations to such parts to maximize dissipation. This paper demonstrates that this vibration confinement can be achieved by suitable design of structural joints that connect members of the overall structure. For example, joints with flexibility in rotation and with finite mass and eccentricity can practically reflect all bending waves incident upon the joints within a wide frequency domain. [Work supported by ONR.]