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Transient analysis of cable under gravity

Transient analysis of cable under gravity

Transient analysis of cable under gravity

(OP)
Hi,

I'm working on a model of inclined cable, consisting of LINK 180 element in transient analysis under the effect of its own weight only. I added an imaginary damper to damp the oscillation to reduce numerical error. The model works correctly as long as the "TENSION ONLY" KEYOPT in LINK 180 isn't activated, once I activate "TENSION ONLY", the solution never converges.
The APDL code is attached Link

Thanks a lot for help!

RE: Transient analysis of cable under gravity

Try to turn the prestress effect on "pstres,on". You also need to open geometry nonlinear on.

RE: Transient analysis of cable under gravity

(OP)
@jiang46602
NLGEOM is ON, and I tried this prestress effect and nothing changed. Do you have another suggestion?
Thanks a lot

RE: Transient analysis of cable under gravity

I did some cable vibration analysis before and used the analysis section like this to get the initial cable condition under gravity load. Then I applied the loads required to do the analysis.

/solu
antype,static
pstres,on
nlgeom,on
deltim,0.005
acel,,9.81
solve
finish

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