Recent content by bridgehl

Hi all, I am struggling with unconvergent problems of a 3-D node-to-surface contact. I am modelling a subject moving on a curved beam. My moving thing consists of MASS21, LINK11, CONBIN40 and BEAM4 elements. Because its displacements follow on a curved line, so I rotate all of the moving...

Thanks cbrn for your great help. I will try modeling with your advices and let you know the results. Regards,

Hi all, I am modelling a cube sliding on a simple curved beam with a constant velocity by using a surface-to-surface contact pair. I used to use successfully the command "D, NodeOfCube, UX (UZ), %XDISP1%" to move the cube with a constant velocity. Now, I want to transfer the centrifugal...

Thank you very much for your answer. Now, with the use of NROTAT, I can apply the desired BCs.

Hi all, I am modelling a curved beam with tangential boundary conditions. I use the command "CSYS, 5" to activate the global cylindrical coordinate to model my finite elements, and it is ok. However, when I apply the BCs by "D, ...", all of these restraints are in cartesian coord although I do...

Hi cbrn, Thank you very much for the valuable help. I set the NITER to a very large value by this command: NCNV, , , 99999999, 99999999, 99999999 However, the problem is still there. I will trace the problem according to your suggestion. Regards, Bridge

Hi everyone, I am doing a contact transient analysis using Ansys 10. Most of the analyses are converged without any problems. However, there is one that is stopped in the middle without any errors or warnings prompted in *.err, in output file... There is only a message in nohup.out (It is run...

I am doing a transient contact problem. Because my problem takes a long time to finish, I set up parameters for a multiframe restart. When Ansys runs throughout to the end, the result output is correct as what I set in OUTRES parameters. However, when I restart the analysis, I can get all the...

This analysis run successfully on my Ansys. Try it! PNAME='MovingLoad' ! Problem file name /FILNAME, PNAME, ON /PREP7 ET, 1, SOLID45 MP, EX, 1, 2.857E10 MP, PRXY, 1, 0.3 MP, DENS, 1, 7850 MP, EX, 2, 2.857E10 MP, PRXY, 2, 0.3 MP, DENS, 2, 0 bb= 1 hh= 0.5 ll= 10 ESIZE, 0.5, 0...

Hi, I have the same problem many times. I think that Ansys is crashed and terminated by the OS. It is not something relating to non-converge solution. In this case, you even cannot restart your analysis. However, you can still check the result file to know what happened. Because my problem...

@ Stringmaker I checked all the commands you recommended, however to my understanding, none of them help to prevent the reactions from output to result file. Regards, Bridge

Hi everyone, I have a transient analysis with 2 loadsteps. Each loadstep has different loads and boundary conditions. I set the RESCONTROL for 10 points for all loadsteps. Unfortunately, my analysis is not converged within the fist loadstep. So, if I only change the timestep and restart this...

Oops, I found the reason. The cause of bigger rst file is in my second question. Because I cannot set the output of reactions for the desired nodes, so when I fix all dofs of dead element (by EKILL), the output of these many reactions cause the bigger rst file. How can I set the output for...

Hi all, I have a curiosity that what data ansys actually writes in its *.rst file? I do 2 transient analyses of the same problem, the same time steps, the same time duration but different numbers of loadstep. The first analysis is with 2 loadsteps and the second is with 4 ones. I specified the...

@Stringmaker: thank you for your reply. Now I can solve my problem partially. In my outputs, I took many unused nodes and elements. Is it possible to delete them from the result files? I have checked all the /AUX3 commands. However, these commands seem to work on the SET only. Regards, Bridge