Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations LittleInch on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

FEMAP Contact Analysis – Wheel on Flat Plate, Nonlinear Setup Fails

Danny123

Structural
Joined
Feb 27, 2025
Messages
5
Hi,

I'm performing a wheel contact analysis on flat plate surface in Femap. The wheel is modeled as a 2D circular surface with mesh thickness equal to the actual wheel width. The flat plate is modeled as a 2D surface and constrained. A vertical load is applied at the center of the wheel. For connection, I am using Contact type and connection regions are
the flat plate surface, and outer curve of wheel circular surface.

I'm trying to perform contact analysis. Simple nonlinear static analysis gives the error:
"Contact is only supported in modal solutions."

I tried advanced nonlinear analysis instead. The input .dat file already contains the line (not sure whether I am checking the right file):
ASSIGN OUTPUT2='advnlin.op2',UNIT=21
but the solver still fails with this fatal error:

*** FATAL ERROR: INPUT FILE advnlin.op2 NOT FOUND.
*** PLEASE MAKE SURE THE NASTRAN INPUT FILE CONTAINS THE FOLLOWING LINE
ASSIGN OUTPUT2='advnlin.op2',UNIT=21
*** AT THE BEGINNING OF THE FILE.
*** ISHELL PROGRAM 'NXNA' COMPLETED ***
^^^ USER FATAL MESSAGE
^^^ ERROR IN ADVANCED NONLINEAR MODULE 0
^^^SOL601 FAILED


Any suggestions on how to resolve this would be greatly appreciated. Thanks!
 
Last edited:

Part and Inventory Search

Sponsor

Back
Top