Table ID required in NLPARMX for snap through RIKS

Casper Kruger

Hi,

 

I am running a snap through analysis on a shallow arch plate. It runs without RIKS but when I switch NEWT and RIKS on i get the below error. 

*** ERROR 14: Missing  TABLEDi #    2 referenced by NLPARMX # 5.

I add the tstep card in NLPARMX section, but get the above warning. There is not an option to add a table only load collectors and TSTEP is setup with N = 100 and DT  = 0.01.

 

See attached .fem file. I will appreciate any input as to what I am missing?

210712_NL_Snap_Through_RIKS_Qs.fem

Adriano_Koga

Hi @Casper Kruger 

 

All cards ending with 'X' are an old implementation of implicit, that goes to Radioss and run it.

 

You are lookig for the new options under NLPARM, OPTION >> NLPCI to activate RIKS for OptiStruct NL.