Debugging Nonlinear Analysis

Pioneer
Pioneer

Conducted a nonlinear analysis of a laminate wing fixed on one end, with an applied thermal load on a portion of its top surface. After clicking analyze, the Message Review Details screen states the following error many times:

 

 

     ***USER WARNING MESSSAGE 4012 (GP3D)

THERE IS NO ELEMENT, GRID POINT, OR DEFAULT TEMPERATURE DATA FOR TEMPERATURE SET WITH RESPECT TO ELEMENT ID = x

 

Capture.PNG

 

where x = thousands of different element ID's because the error message repeats for every element ID

 

I believe I understand this to say there isn't a reference temperature for the entire wing model? How would I go about setting a reference temperature for the wing model?

 

Can attach other photos/files as necessary. Thanks!

 

 

5 REPLIES 5
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Re: Debugging Nonlinear Analysis

Siemens Phenom Siemens Phenom
Siemens Phenom

Modify - Edit - Material, edit your materials and put a default "Reference" temperature on each one.

Re: Debugging Nonlinear Analysis

Pioneer
Pioneer

This actually resulted in the same error 4012. Is it something to do with elements and not materials?

Re: Debugging Nonlinear Analysis

Siemens Phenom Siemens Phenom
Siemens Phenom

Let's try adding a Model-wide reference temerature - use Model - Load - Body, toggle on the Thermal Default Temperature and enter a value.  Make sure you have the load set this body load is in, active in your analysis.

 

Mark.

Re: Debugging Nonlinear Analysis

Pioneer
Pioneer

Mark,

 

That reduced my errors drastically, but there a few more new ones now. Clearly the reference temperature problem has been fixed though as there are ~8 errors instead of one for every element ID reference temp. Image attached below.

 

capture 2.PNG

 

Any suggestions?

 

Thanks for your help so far.

 

-LJost

 

Re: Debugging Nonlinear Analysis

Siemens Phenom Siemens Phenom
Siemens Phenom

Nonlinear analysis requires an initial temperature as well as the final or load temperature.

 

CEND
TITLE = test 1
ECHO = NONE
DISPLACEMENT(PLOT) = ALL
SPCFORCE(PLOT) = ALL
FORCE(PLOT,CORNER) = ALL
NLSTRESS(PLOT) = ALL
STRESS(PLOT,CORNER) = ALL
SPC = 1
NLPARM = 1
TEMP(LOAD) = 1
TEMP(INITIAL) = 3
BEGIN BULK

 

 

Regards,

 

Joe