This document discusses different types of analysis for systems with one degree of freedom under various types of excitation loads. It describes elastic and inelastic time-history analysis methods using the OpenSees software platform and the Newmark integration method. The analyses use bilinear hysteretic models and are applied to study responses to forced and seismic excitations, as well as to compare elastic and inelastic responses.

1. Analysis of history in time of systems with one degree of freedom