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Sergio
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Comments
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There is an issue with the size of the model, probably due to bad scaling during import. I took a quick measurement between two oposite nodes and is about 39400 mm. Try rescaling the model in Mecway to get the right dimention.
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For some reason I can see the nodes but not the elements, can you check it and upload again the model? Regards
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Hi FOL, you can apply a specific stress-strain data leaving the component without material, and then define the *MATERIAL with *ELASTIC, *PLASTIC and then *SECTION cards using Custom Model Definition under CCX branch of the tree. Look in the CCX use…
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Thanks for the explanation!. I use the sta file to follow long simulations (using an external application, Tail for Windows), it gives me an idea of how much has run and how the thing is being solved. I found easier to understand than the convergenc…
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Just trying also note that cannot set up a point refinament centered on the hole of the example:
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Usefull features as always Victor. Have tested constrain equation widget (really nice and visible, would be great something similar for rigid bodys and couplings), new element destination component, and move/copy with formulas and work ok. But the n…
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Related to this, can you add RPM units to the centrifugal loadings also?
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Hi, this is how I would solve the problem, first using bonded contact for all, and in the case of trying to analyze more in deep the bolt behavieur I would add contact only in the blade to cd faces (still I would assume that during the normal use bo…
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Will try to see the model later. What are the three components over the bolts and normal to them?
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For the thermal expansion look in the material definition, is under the basic properties, young modulus and poisson. Then select the bolt component, change the selection mode to nodes and add a temperature below cero. Then go to the model tree and a…
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Even if CCX solver has a specific PRELOAD card suited for this purposes, I'm still using the classical approach of adding thermal expansion coefficient to the bolt material and then apply a low temperature boundary condition to the bolt nodes to cre…
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You could fix (3 dof) all nodes of the body, or use the RIGID BODY card in case of using CCX solver.
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@Victor, have been working in another complex skid this week, and I decide to don´t delete (and not use for any component) the default one. Guess that was a good move as in this way I know exactly where new elements will be created (on the visible d…
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I also like the idea, big software companies has implanted the idea that engineering can be done only with insannely expensive software tools, and for most of the cases can be done with free or affordable ones. My best wishes.
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It takes less than one minute in a Xeon with 18 cores and 32 GB of ram (and ssd disk), maybe two on an old laptop with i5 and 6gb. In the Xeon I have a good Quadro vídeo card, but even that it cannot show the result plot at maximun resolution setted…
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Maybe related, can the de center of gravity computed also once the densities are defined??
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Hi, you can select all the nodes and then apply a cero displacement (three directions), to get all the elements fixed. But why you need to fix it all? Regards
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Now my question to the experienced people of the forum...If I would has to analyze a chasis very like this one, with the objetives of the analysis being max displacement, stress (under steady load and lifting operations) and probably eigen modes ht…
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I have made a quick analysis, the only issue is that you cannot use the Mecway internal solver as the mesh has triangle elements. Anyway CCX has solved without problems.
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Hi Sebastien, this is your part meshed in Salome, the first pictures is meshed as it (element are unconnected at face's unions), and the second one is with a little of geometry treatment to get the full connected mesh
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Can be the different sides of the shells elements painted in different colors to easy identification?
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How does work the multiple delete in the model tree? Is only the new "Delete all" entry in the menu or is possible to select using ctrl and shift?
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Have worked with parts that suffer a lot of deformation/stress due to thermal shrinkage, what we did for that parts was model the geometry in "hot state", and then add a thermal step to the simulation to decrease the temperature and shrink the part …
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Congrats Victor, those are really usefull features! Is there a way that the mehs of the first part (from imported geometry) goes directly on the default component?
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A little late, but here are the results, hope they be usefull. In the PDF file are the load deflection curves and stiffness values for each direction, assuming a preload of half of the maximun load (8mm) Regards
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You should remove the card NODE FILE and EL FILE writted by Mecway (using the "don't generate keyword" option on the CCX branch) and then write your own ("Custom step content") using the option OUTPUT=2D in the NODE FILE and EL FILE cards to avoid t…
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Can you measure the unloaded height of the mount? I'm not sure if the height on the table is with or without preload.
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There is very few info on the site! It should gave you at least the static stiffness in X Y and Z direction. I would start defining a spring by two nodes separated by the issolator unloaded height, so when you apply the load (weight) you would hav…
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As far as I understand probably your mounts performs lineal at least in the range of your application, so then if you have the stiffnes vales for each direction you can use three SPRING elements directly. I worked with automotive engine mounts that …
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You could use SPRINGA elements to reproduce the behavieour of your rubber mount assy. As far as I understood from de CCX documentation you can enter the force/deformation table to represent your non lineal mount assembly. I'm not sure if one element…
