Learning Forum

[Guy Hermann Youdom Yimbi]

Hello,

I'm trying to simulation interference Fit between helical rod and a cable 

• I have got a solution when the initial penetration is less than 5% of the rod diameter and when i increase that value, the solution do not converge
• I also got a non converged solution when i try to put more that one helical rod around the cable

i suspect that the problem come from the helical form but I'm not sure. I try to simulate with only one pitch on my helical rod and I've got the same problem but when i put just the half of the pitch, the solution converged.

I would like to have our guidance on that situation

is there any keyoption or realconstant that could help? or something different from that to change?

I'm using CONTA177 to simulation the beam to beam contact of the model

thanks 

[Ashish Khemka]

Hi Guy,

 

Can you try increasing the number of substeps with increased penetration?

 

Regards,

Ashish Khemka

[Guy Hermann Youdom Yimbi]

Hello ashish, 

I've already try that and the problem persist

[Ashish Khemka]

Guy, you can try Add Offset, Ramped Effects which ramps the interference linearly over all substeps in the load step. This is a useful technique to enhance convergence for challenging interference problems.

 

Regards,

Ashish Khemka