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Hi NoahKatz, I would say that both , adding beams to an edge and meshing only one face could be solved once the mesh is generated by adding them manually or removing the unnecessary faces, respectively. If you have a typical step file you normally …
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Yep, -Select all the holes inside surface with the edge detecting tool. -Extrude to the inside direction (normal) to create the solid pipe. Recommended three elements per thickness -Inmediately create a new component. -Hide all but the new componen…
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You need to input a value at the Second moment of area in your last file KM_32b_static.
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I have requeste it in the solution tree directly. Not a formula. Right click on top of Solution--->>New Stress and Strain-->Stress in element coordinates. Appart from that, I don't think the material properties are right in your file KM32a…
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Try Stress in element coordinates.
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it would be nice to have harmonic analysis ¿Isn't CalculiX manual v2.20 7.117 *STEADY STATE DYNAMICS that?.? If this is what you are requesting, maybe it is possible with custom cards. First line: • *STEADY STATE DYNAMICS • enter any of the param…
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I think you need to switch to 3D
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Hi Dculp, Prop_design Here there is an example with a beam in Dynamic 2D. Dynamic also needs a gravity load to convert the mass into an inertial load. I have found something that doesn’t seem to work but this is not my area and maybe I have set up …
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In dynamic analysis there are inertial forces. I would say the beam needs density too.
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Here some example
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Forget about fixed support. Set x,y=0.
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Thanks Victor, Circular pipe seems fine the whole range and the hallow Torsional Constant converge to the solid when diminishing internal radio. Seems Square is not so simple and people goes to tools based on the finite element method to compute th…
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I have confirmed that the formula is only valid for thin-walled Rectangular Tubes. 16. Hollow rectangle, thin-walled Roark's Formulas. @Victor _ ¿Does this value participate in any computation or is it just informative?
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Hi, If you are dealing with pipes and solid bars look at this recent post about accuracy of circular sections. https://calculix.discourse.group/t/psa-always-use-pipe-not-circ-for-circular-beam-section/1286 Not sure yet if this apply to the inter…
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You always learn something new Thanks
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The gradient, "second image" seems to have a more volumetric feeling probably by an additional external light. ¿Shouldn’t the lighting effects be reserved for the modeling window?
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I guess if the reason is not the lightning effect more than the interpolation process ?¿?. For two homogeneous spheres with uniform solution the final tone is different too.
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Hi Victor, I would like, if possible, that : Components&Materials Load&Constrains Named Selections to be properly sorted when they are renamed with numbers.
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Updated for v17. Now it works again. From Victor solution ( https://mecway.com/forum/discussion/1180/two-concentrated-loads-fluxes-different-amplitudes) "Version 16/17 applies shell edge forces in a more accurate way that includes moments that acc…
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HI dculp, ¿Could you give it a try to the following custom gmsh commands? I have try some models and it respects the edge lenght in the inside volume with a pretty mesh too. You will need to -Install gmsh and point to gmsh.exe in tools>option…
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HI, I have tried using the beam option to model the bolts on a larger scale problem. 20 sets of two plates bolted with 32 bolts each one and loaded in different loading conditions. The model contains 640 thermally preestresed bolts and took 7 minu…
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Hi Swami, You have another option in which the bolts are fully beam elements. The internal protrusion of the nut is used as contact area. There is a liml file in there: https://mecway.com/forum/discussion/comment/6057/#Comment_6057 Not sure how i…
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Hi Mishal, Although this method is suggested in the ccx manual there were some concerns abouts it’s suitability. You should test it before applying to check its performance. https://calculix.discourse.group/t/square-hollow-section-chassis/1246 Th…
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Hi Victor and thanks for your response. I have been able to find the plastic strain tensor with the help of the Calculix forum people. It is inside the SDV internal variables. I would like to do some operations with those components, and I find a …
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mmmh, . My file also has some moment involved.
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Just wanted to add that the problem solves without any issue in Static.
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HI, ¿Does anybody know how to keep the cmd window open at the end of the meshing process so one can review any warning and the abstract ? Thanks
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Your comparison between merging the nodes and the elastic contact has convinced me. Once the stresses arising by an unproper selection of master and slave are removed , the stresses due to different material properties are totally real. Thanks Vic…
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The first picture of the post is an example. Tie and Elastic with high tangential stiffness might warranty the bodies keep together but it can make some stresses to arise at the contact area. Displacements continuities are usually ok. *SURFACE BE…
