Page History

...

To simulate the constraint of the side rails, set the X and Y components to Constant (0 m) and the Y component to Free.

Analysis Settings

The CubeSat As a CubeSat specification requirement, the satellite must have its 1st resonant frequency above 100 Hz, as this frequency is the upper limit reached by many current launch vehicles.  Most major forcing amplitudes in launch vehicles occur below 100Hz.  The goal is to design a satellite which will not be shaken to pieces by reaching its destroyed by some forcing near or at a resonant frequency during the launch phase.  Because of this limit, we are only concerned with the first few resonant modes.

Under the Modal tab in the Outline window, left click Analysis Settings.  Set the Max Modes to Find to 5.  Select Limit Search to Range and click* Yes.  Leave *Range Minimum at 0 Hz and set Range Maximum to 1000 Hz.  These settings allow us to reduce run time by using some foresight as to what modal frequencies we expect to see and care about.

...