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ok thank you very much. I will see that problem more precisely, I'll let tou know. Thx again, caviac

Hi all, this morning I had this warning message : ***WARNING: Duplicate initial conditions were specified on 3562 element(s). The elements have been identified in element set WarnElemDuplicateInitCond. ***WARNING: 3416 elements have incorrect property definitions...

Some people tell me that just the part has to follow the shell theory and you can mesh your part with small elements. Others say that part and elements have to respect the shell theory criteria (length/thickness ratio) Just to be clear... ;)

Hi all, just a precision for me. Is there a limit ratio between legth and thickness to be applied in theory of shell ? Which ratio for part ? Is there a ratio for elements too or is it applied for parts and after we can mesh the part with very small elements ? Thx caviac

Thanks for your responses all ! The last one is interesting and we have made the same conclusions and verify it in theory/practices on calculations. It's OK for us. Thx again !

mu,alpha and beta are known as c1,c2 and c3 constant for the foam law in others software also. You need to have the laws by tests an d calculation or just tests...it costs money of course :) ANSYS is not the best for that but what do you want ot do with the foam ? caviac

No.... I have this kind of geometry : _ | | | | <- force distrib. on the surface. | | -------------- ------------- clamped | |clamped surface...

in shell it's converging....not in solid with 90° and no fillet. Try with a simple model you will see.... ;) I will try with a fillet, I suppose it would be OK. Thx caviac

HI all, I need some help on a problem that I'm not sure to explain. I have a plate with a rib. I put a normal force to the rib. The finer my mesh will be, the higher the stress I have... I Thought it would stop but no.... I think it's a singularity (perfect sharp angle 90°) but not sure...

Where can I find a download site for generic materials caracteristics for crash studies ? Thx all caviac

I used to make HF analysis with these 2 softwares, but just simple waveguide application with ANSYS and really complex studies with HFSS. Yes it has a cost, but it gives payback so make some payback analysis on the buying of the software...sometimes it can be cleared in less than 1 year... caviac

Hi all, in the help of Ideas we can see non linear contact management with new contact elements computed at each step, but I don't succeed in realize them...my contact set stay the same in time evolution... What can be the problem knowing that I have check my Solution set was Non linear and I...

thank you all.

hi all, do someone know how to model screw in assembly ? A spring, a beam, somthin' else ... and especially in plastic assembly...as screws in Polypropylen assembly ? thanx caviac

Thank you. I knew that it was almost impossible... Thanks again. caviac

Hi all, I need the Zamak ZA27 fatigue curves to make some calculation about my part resistance. Does someone know where I could find this ? Or better, could someone give me 2 or 3 points of the curve ? Thanks caviac

philcondit, The chapter9 has only the 9.1 section...but S-N curves are behind this point. I didn't find a SN curve in the previous chapters... do you have some explanation ? Thanks Caviac

Thanks for you contribution. Great. Caviac

Thanks for your response Irwin. I would like to know if there an internet site where I can download S-N curves of basic materials as examples. But it would be great if someone could give us examples with S-N curves they have. Could u detail what are the sd,k,Nd parameters ? Thx Caviac

Hi all, do someone know where I can download some S-N curves for fatigue (Wohler curves) ? Just some examples like one or two steels, one or two aluminium...etc Thanks. Caviac