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Fatmac
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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/…
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I could not make the membrane work without defining the section as a *MEMBRANE card and disabling the *SHELL card. See attached file. I now think that part of the difference in the shell and membrane solution is the constraints. I have tied the 2 la…
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Understood, I was using solid elements for that one. I just saw the example and couldn't help but give it a try! Thanks for pointing it out though
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I have stumbled across an excellent collection of bench marks generated by Andrea Starnini - see screen shoot attached. I have really enjoyed going thru some of these examples and wonder if other documents like this are available? Having work thru …
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I had a little play with ur model -I changed a few things and added far more complexity than needed, but it may give u some ideas how to deal with some of the issues u are likely to come up against. I did make an attempt with tension only elements, …
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nice project. I've spent (wasted?) many hours modelling masts and trial and error has lead me to the following conclusions. My comments are not some much based on science - rather making many errors and looking for work arounds! -start simple, make …
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Thank u Victor for comments and serio for the example files -i think I have set up the cyclic symmetry correctly as my model runs ok and gives expected results in static linear and non linear runs until I start playing around with contacts then i …
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thank you for looking at that. It certainly solves nice and easily in that wedge with the frictionless supports. I'm keen to master the cyclic symmetry so I'm really interested to know why when i take this model and try and apply cyclic symmetry it …
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thank you Sergio for pointing that out -certainly something to watch out for when when revolving surfaces when one edge is on the axis or rotation. I've had very little experience with wedges - do they generally behave behave ok - even if they have …
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Hi Franc -when I open up the file u attached i see the ball and box as 2 separate components which then allows u to assign a new material to each. If they are collected as one component then isolate one mesh and in the 3d window left click and selec…
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Thank u again Victor. That all makes sense. For most of my applications I think I like the 6 weak springs connected to a part that will be sort of moving with the free body rather than being connected to earth which is what I understand the elastic …
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I have striped down the model i was using. It had contact and 2 beams in it -I simplified it to one beam and a simple load. The difference between mode 1 when 1 mode is asked for and when 3 mode is asked for is now only decimal places so perhaps it …
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I tried with and with out the C3D8R elements so i could compare with the internal solver and i still get the same affects when I select only 1 mode. I have mixed precsion switched off. I have tried switching solver with the key words but I get the f…
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I some times check my model by saving the mecway file as a .stl file (file then save as) and import that in my original CAD file and compare the two
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thats an interesting approach -i'll give that a go - thanks for that
