Single degree of freedom (single-DOF) theory, as outlined in this and in the next two chapters, enables a surprisingly large proportion of day-to-day structural dynamics problems to be solved. This chapter first describes how the equations of motion of single-DOF systems can be set up, using a variety of methods. It will be seen that most systems can be reduced to one of the two basic configurations:
(1) Systems excited by an external force;
(2) Systems ...