Figure 8.
Displacement versus frequency with p = 9 m/s2, d = 24 mm: (a) nonlinear system (primary resonance); (b) linear system (primary resonance); (c) nonlinear system (1/3 subharmonic resonance).
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.