VIBRATION AND STABILITY OF GEOMETRICALLY NONLINEAR COLUMN SUBJECTED TO GENERALIZED LOAD WITH A FORCE DIRECTED TOWARD THE POSITIVE POLE

摘要

Considered herein is the vibration and stability problems of a slender column subjected to generalized load with a force directed toward the positive pole. The load is developed by heads composed of circular profile elements. The geometrically nonlinear problem of stability and free vibrations is formulated on the basis of Hamilton's principle, and due to nonlinearity, the problem is solved by applying the small parameter method. Vibration and stability results show the influence of chosen parameters that characterize the considered column (including initial prestressing). The assumed mathematical model is validated by experimental results.