Trouble with linearizing SHO system/empty Bode plots

Hello -

I'm trying to generate Bode plots for a simple harmonic oscillator system (spring/mass, no damping, hanging vertically with gravity) and I keep getting empty graphs. A day with google hasn't helped much, I'm not too experienced with Simulink & Simmechanics yet though, I'm hoping this is a common/simple issue. Any insight would be much appreciated :)

Answer 1

[Guy Rouleau]

The following documentation page explains how to linearize a SimMechanics

http://www.mathworks.com/help/toolbox/physmod/mech/ug/f0-6469.html

Try to reproduce the double-pendulum and once it works fine, applying it to a spring-mass system should be straightforward.

Otherwise, we will need more details on what you are doing.

[Caela Barry]

Thanks Guy!