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Very Nice example Manuel !. Thanks. ¿May I ask you something? I have notice there are some additional materials properties defined in the custom model definition. I have read in the ccx manual about them to understand their meaning and 0.0005 (…
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I didn’t notice about this fact before but …., if you think about it for a while, in fact it seems more accurate this way. The shell is an idealization, the midplane of something with thickness. If you apply the formula to the shell (midplane) , M…
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Hi RPP, If you apply the formula to the nodes the value will be the same as the node coordinates. As you are applying the temperature to the face of a shell, the value shown is the coordinate of the corresponding expanded surface (it will change de…
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It worked! Thanks
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Hi denissps, I hope someone knows a workaround and will tell you how to import lines from Salome. I don't know how so I would suggest you don't forget about the possibility of meshing manually. I have seen many comments on this forum of users strug…
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I have never used it either. I'm not sure if it is the same but when meshing I would say I have seen some message in the console regarding OptimizeMesh at the end of the process.
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Thanks, JohnM, I was lucky to press the button but it would be a pity if someone needs it and do not give it a try just for seeing that red alert. I'm still trying to run the Ball file with Nonlinear and Plasticity and it is not responding to me.…
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It doesn't respond. ¿Is it just me?. I would appreciate if someone else can give it a try. I have tried v.17.1, v.18, v.19 on a WIN10 machine and the one coming with Mecway. ¿Could you post your ccx executable?
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Which version of ccx are you using?. When I try to run it, exits the solver without any message.
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Hi , I think this should be just a bug in the UI. There is a red colour in the "contact" text for the Dynamic Response and it disappears when I switch to Nonlinear Dynamic Response. Contact seems available for both analyses. Thanks for the example…
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There is something weird on your rotation symbol ¿isn't it?. Do you have the beam correctly oriented ? Your picture shows constrain in the W direction which is the right one but it looks pointing upwards. If you are getting the right analytical val…
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You could also use the Deleted unused nodes in Mesh tools.
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Hi, You probably have some shell or beam element in your model. If yes, add a modify Keyword *NODE FILE --->OUTPUT 2D. Then proceed as normal. I have tried with creating a table, copy into notepad to remove the spaces, and paste it back to mecw…
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Hi and welcome, To allow the rotation on a beam you could also proceed as this: Activate the thickness of the beam to see its shape. Select its surface on the extreme like in the picture. Apply to that surface a flexible joint on beam Boundary co…
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@prop_design The main issue is probably me writing too much. I'm trying to understand why Rigid Body is not working as expected for me with shells and beams. Some behaviours seem random but now I understand what is going on much better and I will…
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@Victor. The file ROT NODE VISIBLE shows clear that the Rot Node is moving when the user only wants a displacement of a Rigid Free Body. That's from my point of view something weird. ROT NODE can not move if the user do not request it or the surro…
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Another example that I have convert to Shell element. Try to solve the rigid body motion without constraining the Rotations of the reference nodes. It finishes that it is not a rigid body. @prop_design you can see in the picture I'm getting 4951mm…
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A rigid body should not deform and end further than the imposed displacement value. I would understand some rotation maybe but not distortion. ¿Is there any way to check if the ROT Node coordinates have change since it was originally created by …
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HI Victor, Ok. Let's consider I forget about ROT NODE for a while. We don't talk about it, and I never meet him. I don't know about the custom model definition option. If I introduce three displacements into the Mecway Reference node of a Node-Surf…
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The strange-seeming interdependencies are not so strange if you have into consideration that any rotation promoted by the ROT NODE on the RIGID BODY is done around the REF NODE as CENTRE of the rotation. That's why the position of the ref node , mak…
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"Mecway quietly moves rotational loads and constraints on the exposed reference node to the hidden ROT NODE behind your back". ¿Is that right?. That is exactly what I’m exposing. I thought that was happening because the ROT NODE end up in the bod…
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I just realized that this is not only in RIGID BODY. As MECWAY noticed and warn, displacement BC on shells and beams sometimes causses incorrect stresses in ccx. This issue is the same, it is related and can be fixed the same way. If BC's are i…
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This is an example of rigid body working in Static 3D applied to Shells and Beams (respecting the above points).
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@Prop_Desig Don’t know Prop_Design. Maybe it is due to the mesh but a function defined with parameters or its equivalent piecewise function by means of user curve definition should give the same results.
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It might be related with the difference between : *DISTRIBUTING COUPLING (force or displacement) and *COUPLING *DISTRIBUTING (*DISTRIBUTING preceded by a *COUPLING ). No kinematic relations are created between the reference node and the coup…
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Thanks, Kenn, Regarding the speed up of the computational process with BC applied to the nodes I mean applied to the nodes directly instead of applying to the surface where they belong. I think that when it is applied to the surface the solver need…
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Hi Kenneth, I commented on the "Nonlinear Axisymmetric Post" that I noticed that when imposing the BC,s directly to the nodes, the assembly of the matrices and computation is much faster. Don’t know exactly why. The difference is big. I have also l…
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Excellent paper. Thanks for sharing. I would add this extract from the Calculix Forum. Xyont: https://calculix.discourse.group/t/elasto-plastic-bending-elements-accuracy/700/12 "hi, beam & shell element are expanding to solid element in Cal…
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I have just notice that displacement is not working eigther in Distributing.liml The deformation shown is due to the self weight. ¿Is the *BOUNDARY card allowed for node-Surface distributing coupling ? It is shown in the manual but seems can not …
