Bolted joint in NX 8.5

[christophersrikanth]

Hi,

I have got a bolted joint in NX 8.5.

I have applied only the bolt preload and kept the friction coefficient as 0.

See attached gif image file, the bolts deform to enormoud magnitude without friction. I did not expect so. I expected wthout friction effect there might just be tenmsile elongation of the shank of the bolt.Why does this happen?

http://files.engineering.com/getfil...c-a293-d92384078a8b&file=without_friction.gif

NExt, I gave a friction coefficeint as 0.3.See this image

http://files.engineering.com/getfil...4a5d-a055-f0e48a9556ff&file=with_friction.gif

The deformations I believe were ok. I sed sol 101.

Can anyone provide insight why were the deformations so enormous without friction coefficient?

 

[Michel1978]

I think you always should apply some friction. If not, the smallest force can have a huge effect.
But can you explain how you apply a preload on a bolt. I have no preload and use a friction of 1 but that give kind of the same results as you have.

I use NX8.5
HP Z600 Intel Xeon E5520 2.27GHz Dual
Quadro FX 3800 5GB
9GB Memory
Windows 7, 64-bit

Groeten, Michel

http://www.kvi.nl

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