gregorsky1
Automotive
- Aug 21, 2008
- 5
Hi,
how would You simulate vibration test (random+fatigue) of following model(MSC.Nastran):
box structure made of closed profiles with inside trolley running on steel wheels on two profiles.
This trolley is prevented from motions in three directions but of course there are clearances in each direction around 1-2 mm. Therefore this trolley can vibrate separately from box. How can I connect it with box for frequency response (sol 111) analysis?
I was adviced to skip Nastran in first step and ask for Adams/flex analysis (on flexible model) and to include time signals from Adams to Nastran. PSD is given in freq. domain - will it be easy to transform it to time signals with reversed Fourier transform?
Best regards,
G
how would You simulate vibration test (random+fatigue) of following model(MSC.Nastran):
box structure made of closed profiles with inside trolley running on steel wheels on two profiles.
This trolley is prevented from motions in three directions but of course there are clearances in each direction around 1-2 mm. Therefore this trolley can vibrate separately from box. How can I connect it with box for frequency response (sol 111) analysis?
I was adviced to skip Nastran in first step and ask for Adams/flex analysis (on flexible model) and to include time signals from Adams to Nastran. PSD is given in freq. domain - will it be easy to transform it to time signals with reversed Fourier transform?
Best regards,
G