Problem with cylindrical roller bearings

Rahul_P1
Rahul_P1
Altair Employee
edited October 2020 in Community Q&A

Hello everyone,

I am creating a numerical model of a cylindrical roller bearings using Hypermesh.
I started with one cylindrical roller with diameter 5mm. The contact area I mesh with 2D-automesh, to get the mesh finer at the contact.
Afterwards I use 'tetra mesh'-panel to create a mesh to all solids.
I have refine the contact to 0.025mm, but I do not get the analytically results of Hertzian pressure (more than 30% deviation).
The analysis is non-linear-quasi-static, the contact SLIDE, NLPARAM NINC=5 and the loadstep is set to NLSTAT.

If someone could give me tips for mesh of cylindrical rollers, I would be infinitely grateful.

And sometimes comes the ERROR # 941 NON-CONVERGENT NONLINEAR ITERATIONS FOR SUBCASE 1.

What can I do to check what I need to change in my model?

Regards,
Martin

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Answers

  • Rahul_P1
    Rahul_P1
    Altair Employee
    edited May 2015

    Hi Martin,

    Can you increase the NINC and MAXITER values in NLPARM card and check if your run converges or not?

    Also, use PARAM,EXPERTNL,YES and CONTPRM,STIFF,SOFT

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