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problem(s) with preloaded modal analysis in NASTRAN
Yes, I can see the point, but considering a simple beam, this will have different natural frequencies in dependancy of the load acting upon it. If it is compressed with critical load, eigenvalue will be zero... So, according to this, in my bolted and preloaded structure I want to see how preload...- Cardins
- Post #5
- Forum: Spacecraft engineering
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problem(s) with preloaded modal analysis in NASTRAN
I forgot to mention that to constrain motion in z-direction, 0D grounded spring elements have been used. Greetings Valerio- Cardins
- Post #2
- Forum: Spacecraft engineering
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problem(s) with preloaded modal analysis in NASTRAN
Hello everyone, this is my very first message in this forum, so I hope this is the right section to post my question. I'm using Nastran for a study on bolted joints, both from a static and a modal point of view. I realised that Nastran allows to simulate the effect of pretensioning on a linear...- Cardins
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- Replies: 5
- Forum: Spacecraft engineering
