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Getting started with SOL 106/601

Hello All,

 

I just started my experience witn SOL 106/601 and immediately meet some problemm with simple analysis. Please help as below:

 

I tried to simulate a contact between two solid bodies (both steel) and include nonlnearities of material and large stran/displacement effect. Just to begin work with this solver I created a model shown below. Unfortunately the analysis does not run. Can anyone help me with that ? There is no tutorials in original documentation showin how to start with such analysis so it's qutie hard to get into the topic.

 

I modeled the bulb and plate. The enforced displacement is defined: time vs DOF3. Simple contact is added as shown below:

I get the information as below...

NASTRAN Msg:      ***WARNING: Contact surface compliance not used for contact group 100.
                              Contact compliance can improve the solution accuracy and 
convergence rate.
NASTRAN Msg:      ***WARNING: No element connection for node 1 directions 4, 5, 6
                  ***WARNING: Similar warning suppressed for 7449 other nodes.
NASTRAN Msg:      ***WARNING: Nodal degrees of freedom without element
                              connection have been fixed for data input file.
NASTRAN Msg:  *** FATAL ERROR: SOL 601 DID NOT FINISH SUCCESSFULLY.
              *** ADVANCED NONLINEAR EXIT CODE 0 ***
NASTRAN Msg:  ^^^ USER FATAL MESSAGE  
              ^^^ ERROR IN ADVANCED NONLINEAR MODULE          0 


Total messages: 3 WARNINGS and 2 FATALS

Can anyone help please ?

 

4 REPLIES

Re: Getting started with SOL 106/601

[ Edited ]

I would like to continue this thread,

Now two questions:

1. Please can anyone say what is wrong with this model (attached zip) ? There are 3 solutions:

- Linear static (SOL101) - works ok (converge but of course the stress are too high to take to take them into account, so that's why I would like to run non-liear solution)

- Non-linear static - with load = 10 x normal gravity - works ok

- Non-linear with line load with ramp-function (same as in SOL101) - does not crash but not all the load is applied (only 5 steps are perfomred) - the question is why?

 

2. Is there anywhere available a list of NX Nastran non-linear warnings, simmilar to the list for Linear Static Solver? Often there are warnings with A-prefix, but I can not find such list with deeper explanation of the problem.

 

Great thanks for help Smiley Happy

 

Betreff: Getting started with SOL 106/601

[ Edited ]

Hi TomekZeWschodu,

 

first take a look at this documentation in docs.plm.automation.siemens.com for NX10:

 

PDF: advanced nonlinear theory and modeling guide

 

Max be you will find your answers there.

 

After that:

1. Check your meshing, I think you use only one layer of linear brick-elements in your plate and I think, that's not enough.

 

2. Take a look into NXSTAT description. There you will find all parameters relevant for nonlinear analysis in SOL 601

 

3. Make familiar with ATS, TLA-S, ...

 

4. Start to dig into nonlinear problems with enthusiasm ;-)

 

Good luck and best wishes,

Michael

Betreff: Getting started with SOL 106/601

Thank you MiDi1791,

 

Actually I was looking for somehtin similar to this document, but related to the Non Linear solution (ADINA solver ?): Error Message List

But thanks, I hope will find some hints Smiley Happy

Betreff: Getting started with SOL 106/601

Hi TomekZeWschodu,

 

I also look for such a documentaion for a long time. If you find it, tell me....

 

Michael