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Sergio
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Comments
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Yes, exactly
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Scott, I made the same as you (even my part has the bolts aligned in Y). What I have made in order to have the loading section normal to the bolt axis is make a 2d mesh of the bolt and then extrude along the axis, then the shaft elements has faces n…
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I was able to solve a small assembly using PRE-TENSION card, but somebody knows how to use it if the bolts are not alignated with the coordinate systems? Luckily this part has the bolt aligned, but this is not always the case. Tomorrow I will try w…
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I will try again with the preload card directly to see if I can make it work. About thermal preload, I'm trying to avoid it.
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I'm using by the moment a load applied on a set of nodes, this set of nodes has his coordinates system reoriented by means of a TRANSFORM card. I have tried before with the pretension card but can't make it work. I'm working on a production part, so…
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Also having a visual representation will help a lot, is a little tricky to figurate the new directions without a visual reference
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A little more of info http://www.npl.co.uk/upload/pdf/elastic-plastic-materials-manual.pdf
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Hi, in fact I have experience working with non lineal material (plasticity analysis for crash tests), in Abaqus and CCX for alumiium and steel sheet parts. I always introduce the (true) stress vs (logaritmic) strain curve points in the material def…
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Hi, you can do it by means of the remove kw feature, you need to remove MATERIAL, ELASTIC and DENSITY keywords. Then create a name selection of elements containing al the elements that will have the specific material. Give a meaningful name. Then ad…
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I was able to model real parts on Onshape without need to read tutorials or help, something that I cannot said of Freecad. The way of work is very like professional tools like Solidworks or Solidedge.
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Hi, I came from automotive industrie were we use tools like NX or Catia. For working as freelancear I hace choosed Onshape that is online CAD modeling very well suited fof FEA model preparation and keep the same layout than traditional packages. Is …
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Another thing to remember is the Show Origin option as well.
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At the end those tags are the best for showing the results to the client, there is nothing more clear. Actual tags are very usefull for the analyst, but for showing to the client maybe a more simple (only the postprocess value with unity) tags is mo…
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Maybe a usefull option would be the possibility of move and keep several tags as you go picking nodes. In such way one as analyst could select the right node to shoe the value.
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Kwip, you are right, but in my example of the snap belt I has those kind of results for loads, obviously they are zeroes, but I has to fix it by hand in order to plot on Excel. Who knows, maybe somebody test a nuclear reactor and fails due to this l…
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These are the settings that I use normally for nonlineal on CCX. One of the problems that I have is that the results files can grow to 500-800 Mb easily.
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My votes for multiple selection on the model tree as well. Another point that I found a little bit confuse is that when a group of elements is selected in the model tree, if we press the Delete key then the elements on the model are deleted also, n…
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I can't solve the clip and others models that I have done before (on a fresh install of Windows 10, Mecway and CCX suite) on , even if I setup a bat file. I will back to the kwip version that runs smooth. Regards
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Víctor, for this kind of test normally I use a simmetry plane (in fact here we could use two planes), adding a displacement restraint (normal to the simmettry plane) to take in count this simmetry. This constraint also limit the rotation as we can s…
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Great mesh and model Tim, I really like the estructured meshes and this looks very nice. Normally components are showed on the result tree as well, so you should be able to hide and show every one. Can you upload the model (without results) to see w…
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Have you defined each mesh as a separated component? As I can see in the picture of the other post, there is only one component defined.
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Maybe what is happening is that with such small forces the part still is penetrating so no reaction/stress. I'm not sure, but what I can tell you from experience, is that is always easier (less time to solve, is a math thing) for the solver apply …
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Tim, I just donwload the win64 executable from some place that kwip has uploaded, and it works very very well. If you work with contacts I would advice to switch. Also CGX have some valuable improvements (like moving between increments directly with…
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One thing that I found in the kwip version 2.10 is that when I ask for writing data in an external file (*NODE PRINT), if the value exced 9.9E+99 or 9.9E-99, it became 9.9+100 or 9.9-100 (so I has to edit by hands to plot in Excel) Regards
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Hi Tim, looks like you have done a nolineal FEA, in that cases you must move the time slider on the lower side of the Mecway's window to see the results. In CGX you are seeing the time increment 10, but in Mecway the time 0. Regards! By the way, v…
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Maybe you can try appliyng a displacement and not a load. Then do a plot of reaction force vs displacement in Excel to know in which displacement you have reached the desired force.
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Dave, see my comments bellow: 1. Is my approach to loading a reasonable first stab? I would make separates parts and apply contact (to allow the part to slide), but don't know if works for axisimetric elements, maybe you can model a quarter or less…
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By the way, can I ask you why the mesh has this wierd shapes on the base? Have never seen before netgen giving such results.
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Hi Barrti, you just need to select all the nodes in the fixed side and create a new named selection, and one node in the movil and again create a new named selection. Then CCX will output the results in an external .dat file that you can import in E…
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I though to sugest you to use TIE, but I just read in the documentation that is only for 3d elements. Then I though in MPC, but true is that I don't understant how to use according to the CCX docs. On the other side, in the Mecway docs, MPC looks us…
