The study of nonlinear vibrations of systems having two
degrees of freedom has met considerable attention during the past
few years. Nonlinear symmetrical systems have received most of it.
Normal mode motion of a system is defined as a periodic motion
such that the masses of the system assume repeated...
This report describes research activities in the Oregon State University School of Engineering during the period from July 1, 1961 to June 30, 1962. Projects are listed according to the department in which the re search is being conducted. In some instances, research activities are interdisciplinary and involve staff members...