For example in the Direct Route-check against Gross Plastic Deformation (GPD), for admissibility it is only necessary to show that (for the defined actions with appropriate safety factors) the resulting elasto-plastic stress field is an equilibrium stress field where the absolute maximum total principal strain does not exceed 5%.
In summary, the use of 2D axisymmetric elements is critical in the study and design of pressure vessels where rotational symmetry exist, then taking advanced of a very reduced model size instead to be forced use 3D Solid brick CHEXA 8-nodes elements.
Please make your best to convince NX NASTRAN developpers to implement this feature urgently in SOL106 -- thanks!.
This forum is not the appropriate avenue for submission of enhancement requests. Please log an IR with your local GTAC support office so that they can officially document the request in an ER. This ER will be routed to the NX Nastran Product Manager for review.
Hi Blas, Jim,
Is there any update on this ?
I see from the Multi-Step Nonlinear User’s Guide that in SOL401 CQUADX4 & CQUADX8 now support nonlinear material modes.
I am performing an axisymmetric analysis using FEMAP and NX Nastran SOL106, and require elastic-plastic nonlinear material. When I try this with CQUADX8, I don't seem to get any plastic effect. So I guess this is not supported in SOL106 ?
Is there any plans to add nonlinear material (elastic-plastic) material modes to the axisymmetric elements in SOL106 ?
Is it possible to export an input file for SOL401 from FEMAP ? I can't find an option for this solver in Analysis Set Manager.
The elements that are available for small strain material nonlinearity in SOL 106 are documented in the Basic Nonlinear Analysis User's Guide here:
Note that there are no axisymmetric elements in this list.
SOL 401 or SOL 601,106 can be used for elasto-plastic analysis of axisymmetric elements.
As noted above, these elements are available in SOL 401 and 601,106. The noted ER dates from 2010 / NX 6 timeframe. At that time the elements were available only in SOL 601,106. A concern noted in the ER is that SOL 601 required an additional license. SOL 401 is part of the Nastran Basic license (same as SOL 106) so no additional license is required to perform an elasto-plastic axisymmetric analysis in SOL 401.
I've notified the product manager and asked him to review the ER.
thank you for your answer.
I am looking for sol 401 in NX10 but I cannot locate it!
Can you please explain what combination of choices between Solver, Analysis Type and Solution Type activate this particular solution?
For exemple "SOL 401" does not appear with NX NASTRAN/Structural, nor NX NASTRAN/Axisymmetric Structural. If NX Multiphysics/structural is selected, there are no such Solution Type as "SOL anything".