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Random response analysis with Nastran
I can only use Nastran through Patran. So I am not familiar with Nastran commands. In Patran, "Random Analysis Tool" can get RMS of von Misese stress response and (at least according to its documentation) cross spectral density.- SamSSX
- Post #4
- Forum: Mechanical Acoustics/Vibration engineering
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Random response analysis with Nastran
I have done random vibration response analysis with Patran/Nastran. I would think Femap/Nastran should be similar. Patran/Nastran is unit neutral. All they ask for is a consistent set of units. I always convert accel PSD into my consistent unit system (for me, it is in^2/sec^4/Hz) for input...- SamSSX
- Post #2
- Forum: Mechanical Acoustics/Vibration engineering
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Modal Testing System
Thank you Greg and FGL for your inputs. It seems I just missed the big gathering of modal testing venders. I used HP/LMS (in unix box) modal test system over 10 years ago. Now to my knowledge, Agilent sold its mechanical data acquisition product line to VXI Technology and is out of modal...- SamSSX
- Post #4
- Forum: Mechanical Acoustics/Vibration engineering
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Modal Testing System
Hi, I have done a lot of structural dynamic analyses but have done little experimental modal analysis myself. Now I need to buy a modal testing system that I am going to use if needed in any project. I would like to hear your opinion and recommendation for such a system. The structures of my...- SamSSX
- Thread
- Replies: 6
- Forum: Mechanical Acoustics/Vibration engineering
