I am trying to compute the geometric stiffness matrices of a model with distributed loading. I would like to export what is being showed in the textbook excerpt below. I am unfamiliar with how to go about exporting this matrix. I can set up the model…
I am generating XYPUNCH output in nastran output punch file which is including multiple subcases. How can i read data from punch file by converting it in csv or excel file which will be useful for data plotting.
For a Nastran SOL106 nonlinear run, +1000 load cases were run in one BDF. The output fringe plots titles show load increments higher than 100%. How can the customer be reassured that this is normal? Is there a reference in the Nastran QRM? Thanks
Hello community,
I am doing using simulator data for dynamic analysis of vehicle by Nastran solution 112. I want to simulate rubber weather strip contact for Tail gate/Trunk lid in modelling. What option is best in Nastran to simulate rubber…
Hello,
Is it possible to plot the grid point forces for a model in SOL101? So far I 've only managed to print them. Changing the option from GPFORCE(PRINT) to GPFORCE(PLOT) does nothing.
Also, is it possible to prin thet contact…
I have a model with glued contact..I can get ouput for stress, CBUSH/ELFORCE, displacements,etc.,et .but I can NOT get contact status to show up in PATRAN, either for H5 or .OP2..what am i doing wrong?
I am using solution 106 nonlinear static for modeling a flexure with gap elements for a contact feature. I suspect that their is a problem with the orientation specified for the gaps or that I need a penetration tolerance set as the nodes of the gaps…
Hello!
I am performing frequency response test correlation. FEM eigen frequencies match the test. However, I am struggling with amplitudes. Currently, model has constant modal damping set in TABDMP1 but I wonder if it is possible to employ sol200…
Hello!
DRESP1 gives output such RMSDISP, RMSVELO or RMSACCL, but is there any way to get RMSFORC? Is it possible to calculate it with DRESP2 and DEQATN?
Does anyone know a way to speed up contact convergence in SOL 101 or 400? I'm finding that MSC Nastran takes 30-40 times as long as NX Nastran to solve the same linear static problem (linear other than the fact that contact is present). Does everyone…
I would like to import MONPNT1 points and associated sets defined outside Patran to an flds database. Unfortunately I keep receiving the following error which isn't documented: Unexpected Flightloads Error. NServer_ExeStatus returned Error=23 in Function…
i would like to understand that how we can apply as cohasive + riveting bond between two shell faces. should i have to simply use the tool called cohasive under the element ?.
I am running random analysis (SEMFREQ) under 2013.1 NASTRAN, and I encountered this message in the f06 file:
*** SYSTEM WARNING MESSAGE 3002 (RANDOM)
EOF ENCOUNTERED WHILE READING DATA BLOCK OES2 (FILE 107) IN SUBROUTINE RAND2B
*…
I've multiple nodes against each force definition. Presently, force is referred to each grid. Is there a way that instead of referring to each grid, it can be pointed to a node set so that one can change the force magnitude and direction at few locations…
I want to model an Al honeycomb in 3D Properties.
I could use Shell to create a hexagon, but I am looking for a different method because it is difficult to model and computationally expensive.
Is there a better method to make a model with…
In the past, I have run static thermal analysis using discrete temperatures to generate temperatures at all structural nodes for further stress analysis.
I am looking for examples I can study in the setup of a run to compute nodal temperatures…
If I want to perform a Linear transient analysis in SOL400. Which analysis type should I use in ANALYSIS deck? Because I use MSC Apex I can not perfrom SOL109
I have a modal analysis to do (SOL103) but I am asked to introduce CBUSH elements with a dynamic stiffness. Is it possible ?
If yes I tried with PBUSHT but I have an error with the TABLED1. Anyone know how to do it please?
How can I exclude the diplacements due to the rigid body modes from the output of a transient modal (sol 112) simulation? I need only the displacements due to flexible modes
Hello,
Is it possible to run SOL103 when your model contains PSOLIDS with MATORT? I tried running such a problem and while no errors occured in the f06 file, the results where definately wrong (eigenfrequences were too low).
The…
