Vibration Fatigue in Nastran
Vibration Fatigue in Nastran
(OP)
Does anyone know how to do vibration fatigue in Nastran? Does NSC support this in N4W?
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
Vibration Fatigue in Nastran
|
RE: Vibration Fatigue in Nastran
this is a quite late answer, but the reason you do not get an answer here, is that this is not the right forum.
There is no chance to do a vibration fatigue analysis with NASTRAN alone.
Vibration fatigue typically has two diffrent loading conditions:
random excitations (defined by a power spectrum density of a load)
deterministic (sine waves resp. sine sweeps).
From these loads NASTRAN can only calculate the transfer functions to e.g. local stresses (in the case of random excitations again a statistical deccription by a PSD). from this a special calculation tool has to estimate the local stress smplitudes and them estimate fatigue. The latter step is implemented in fatigue software tools.
Both types of loads can be handled by LMS Virtual.Lab Vibration Fatigue. The random one also by FE-Fatigue.
Regards
drmh