Abstract :
To demonstrate the characteristics of the nonlinear
response of steel frames, an elastic dynamic
response analysis of the semi-rigid frame is performed
under the harmonic wave. The semi-rigid contact is represented
by the alternating spring which is given stiffness
by a three-parameter energy model which approaches the
hysterical curve by hardening model. The properties of
spectra and hysteric curves are presented. This study
shows that (1) the greater the acceleration input capacitance
the smaller the instant connection capability and the
smaller is the response. (2) However, by allowing an
extreme increase in capacitance input acceleration,
response spectra can be increased as the contact stiffness
results near zero.
