Sol106 limitations
Sol106 limitations
(OP)
Hi all,
I've created the model in NX...and wanted to solve thermal stress analysis problem using sol106...for my problem following is the description-
1. Used nonlinear material curve
2. Large displacement on
3. Elements used- lower order hex, pyramid, tetra
The problem is first solved using contact and without contact in second time. But in both cases the problem was not converging. I also tried this problem by simply using sol101 and sol400 (MD nastran) and in both solvers the problem was converging. So I wanted to know is their any limitation of sol106 for thermal stress analysis (considering thermal gradient) or for elements or for materials Or their is some thing else which I need to consider?
Need urgent help...and thanks in advance.
I've created the model in NX...and wanted to solve thermal stress analysis problem using sol106...for my problem following is the description-
1. Used nonlinear material curve
2. Large displacement on
3. Elements used- lower order hex, pyramid, tetra
The problem is first solved using contact and without contact in second time. But in both cases the problem was not converging. I also tried this problem by simply using sol101 and sol400 (MD nastran) and in both solvers the problem was converging. So I wanted to know is their any limitation of sol106 for thermal stress analysis (considering thermal gradient) or for elements or for materials Or their is some thing else which I need to consider?
Need urgent help...and thanks in advance.





RE: Sol106 limitations
If I can ask, which version of MD Nastran did you use to get your successful completion of your job?
RE: Sol106 limitations
Quoting:
> 1. Used nonlinear material curve
Supported
> 2. Large displacement on
Supported but note that SOL106 is a large disp, small strain assumption.
> 3. Elements used- lower order hex, pyramid, tetra
Supported, although I would recommend against using a tet4 element. Use a tet10 with the corresponding pyramid element order to connect to the Hexa8.
In addition to this I would suggest you run your model using SOL601. This is more robust that the traditional SOl106, and supports large disp/large strain assumption.
RE: Sol106 limitations
The version I am using is 2013.
The fatal error which I am getting is-
Fatal non-linear element error.
I hope you can guide me better with this discription.
RE: Sol106 limitations
RE: Sol106 limitations
RE: Sol106 limitations
RE: Sol106 limitations
Also when I used hex and penta elements only and not tet elements same error is occurred.
RE: Sol106 limitations
Looking at the NLITER table at load-step 0.9625, the code is having a hard time achieving convergence. Have you tried using a full-newton raphson method? If not, please do as this helps.
Meanwhile, the iteration table that you have shown is not for a standard SOL106, looks more like for a SOL400.
RE: Sol106 limitations
Just one more que if I need to use glue contact in sol106 (MSc)then how to define glue contact. Do u have any material to read about glue parameters in msc.
RE: Sol106 limitations
SOL106 is not capable of handling glue contact. This has to be achieved with SOL400.
The MSC Nastran Non-linear users guide is good starting point. You can download this at:
https://simcompanion.mscsoftware.com/infocenter/in...
You'll need to register on the site.
RE: Sol106 limitations
That is a great help from you...
RE: Sol106 limitations