Learning Forum

[engr.rohan7]

Hello community,

I am doing a coupled field transient analysis of brakedrum.

But, I am getting this error,

Also, in force convergence plot, it is seen that the force convergence line goes below force criterion line but substeps don't converge (red circle region),

 I am looking to get total deformation and equivalent stress due to frictional heating in the brakedrum.

I would also like to know how to get heat generation from the frictional contact and sliding and see the resultant temperature rise in coupled field transient?

Regards,

Rohan

 

[Erik Kostson]

Hi

See our courses for more on contacts (search our webiste for more courses):

https://innovationspace.ansys.com/product/fundamental-topics-in-contact/

For contact convergence search the internet (one example):

https://www.youtube.com/watch?v=O-qTAiE8Kdo

Substeps more:

https://www.padtinc.com/2011/11/08/you-dont-wanna-step-to-this-breaking-down-loadsteps-and-substeps-in-ansys-mechanical/

As for your final quetion (heat generation from frictional..) see the help manual:

https://ansyshelp.ansys.com/public/account/secured?returnurl=/Views/Secured/corp/v242/en/wb_wbtec/WBtecfricstir.html

Or search there for example:

Chapter 28: Friction Stir Welding (FSW) Simulation

All the best

Erik

[engr.rohan7]

Hello Erik,

Thanks for sharing the above links on contact setup and substeps.

I used the tips in my simulation but still I am getting the error as seen below,

There are no N-R residual forces observed in solution information tree. What can be the reason for convergence failure in this case?

I am looking forward to the solutions for this issue. 

Regards,

Rohan.