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Fatmac
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This issue has confused me a lot in the past - now my work flow for any contact analysis includes an initial run with no loads applied to see if there are any odd interferences. In this case I see the interference here. The odd part of it is that wh…
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I download both ur .liml and step file. I struggled to make a decent mesh form the step file with in the .liml. However once I downloaded the step (which came out as a polysurface with no sides in rhino) i generated a full solid - brought it back i…
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I had a look at this using solid pop rivets - i introduced a bit of pretension in the rivets by cooling them. The overall deformations look sensible. However, a quick look at the stress in the rivets made me a little suspicious of the results -thi…
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I have been playing around with contact analysis of late so had a look at this analysis. I have seen some situations where the same analysis run in quasi nonlinear with a nice steady time based displacement have trouble converging where as if i just…
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if u wish to connect the parts by just the rivets then bond using the surfaces where the rivets connect to - see pics
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assign the material to the parts then bond them together
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I've had a few days working with V31, up to now I have seen no issues. However this afternoon I had the program crash. I got this error Error. Please save your work in a different file, close Mecway and report this to support@mecway.com The given k…
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Have u tried merging nodes?? keep the surfaces as different compounds so u can have them as different materials but use merge nodes to tie them together - if they are not exactly coincident then try slow increasing the merge tolerance till they mer…
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I noticed the opposite normals in the original model and was not sure how to correct them - can u let me know the trick. I am interested in the run time with out the quasistatic option -it solves much faster. I imagined (wrongly it would appear!) th…
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I had a quick look at your project. My first thought was that using node/surface couplings with shells in a NL analysis always ends in tears for me - I normally revert to using solids (especially where the plate is this thick). Next thought was I ha…
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Thank you for getting back on this -and yes I did miss attaching the simple file, I've tired to this time. What I was hoping is that I could use the ID generated in the input file are redefine it in some sort of custom model definition input. In th…
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I'm not sure it gives u any directions in OR but perhaps there is a similar approach in OR as to the work around I have been playing with here. In calculix I have added a custom card that defines temperature dependant plastic strain/stress strain r…
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Hi john - not sure this is what ur after, but I could not help but take a look. I removed the moment, rotated the hammer arm until it was close to the stop and applied an initial velocity (taken form the original solution at impact (about 3.8m/s) an…
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while looking into using element deletion in solids (which I now get the feeling is not possible with the starter pack -only the full version) I was playing around with some small simple blocks and came across some peculiar results. I was simple dis…
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fantastic - thanks for replying so quickly. I did not even think to try - i thought that it would only apply to the calculix analysis. Not only do i get what i was looking for really easily but i now get an insight into how its structured by looking…
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Thank you guys so much for all the info on OR -I am really enjoying using the element damage laws shown here- they will be invaluable for looking at failure mechanism for small metal parts. I am still struggling with the input process but these page…
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I may have not properly understood ur question correctly but i think there are several ways to achieve what u are after. The simple way is to use tabular inputs. If u run the analysis over say 20 seconds and u expect the tricky nonlinear part to be …
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no probs on chrome this am
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If u are using NL then by setting the time period to 1s there are some easy options to manipulate the time steps. Here I have shown a n an option Also by using tabular input a series of steps can be introduced
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I know very little about rubber and even less about fatigue studies, but I imagine u will be able to get some great insight into the deformed shape, stress distribution and loads required to arrive at prescribe deformations with Mecway. I had a ver…
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Thanks Disla for pointing that out - it felt a little odd that the membrane required a 3D option and the shell did not. Now I see the expansion, it gives me more confidence that I am setting the membrane elements up correctly. it is interesting to s…
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here
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here is the file
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mecways netgen mesher does a nice job on the split parts also -I had to merge some of the nodes after to make it one part though
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By splitting the main part with the 2 branched tubes, importing all the bits into prepomax then making a compound I managed to generate a conformal quad mesh
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actually mecways netgen mesher does quite a good job
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i imported ur geometries into rhino, trimmed the intersections, fused the surfaces together then used quadremesh to generate the first mesh -I also imported the trimmed fused surface to propomax (it has some nice meshing options) to generate the sec…
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Good evening Sergio -i've had a play with a few examples but 4 and 6 are a little out of my capabilities - i will take a look when i have more time
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I got pretty close with some finer meshes -with more refinement and hex 20 blocks i got a max VM of about 318 MPa. I found all the test in one doc at https://ansyshelp.ansys.com/public/account/secured?returnurl=/////Views/Secured/corp/v252/en/wb_vm/…
