Victor

About

Username
Victor
Joined
Visits
4,659
Last Active
Roles
Administrator

Comments

  • Yes, you can use Mecway and just install CCX as another solver. Some the the more special features won't work with CCX but plasticity will appear as a material property.
  • I see. You could use the table definition of force for that. What phenomena are you looking for? Fatigue, plastic deformation or something else? For plastic deformation, use CCX. For fatigue, neither solver does that directly. Instead you migh…
  • Can you clarify what you mean? Do you mean having several of the same force on different parts of it, or different copies of the same bar? Or do you mean a force that turns on and off with time? In the first case, not generally. If the force is ap…
  • There's some information under Shell and Beam on p52-54 of the manual. Beam tensile force and stress are positive for tension and negative for compression. Shell stress components are in the local element coordinate system, as shown by their n…
  • Can you clarify the problem?
  • 1. I'm not sure about using laminate material to simulate reinforcement bars. One way could be to make a steel layer with the same cross sectional area as the total rebar cross section in that plane. Then the overall tensile stiffness in the directi…
  • I would use a single step with amplitude like: *AMPLITUDE,NAME=AMP_1 0,0 1,1 2,-0.333333333 unless you're planning to add more complicated differences between the steps like making one of them linear or different outputs, etc. It c…
  • The problem seems to be improperly connected edges around one side of the hole. Other software may be automatically healing those edges together. To find the problem, make a surface mesh (Meshing parameters -> Surface mesh) which usually works …
  • Thanks for the feedback Sergio. 1) I haven't looked into this much since I see it as an advanced option that you can do yourself by setting an environment variable. Is that right? Maybe for the next version. 2) Thanks. 3) Not yet sorry. …
  • For 64 bit Windows with a big enough hard drive and page file, there's no such thing as not enough memory because it can always use more disk space. So it could be that disk space or page file maximum size is too small, or it could be a bug. Make su…
  • Hello UGMENTALCASE and welcome to Mecway What's happening here is as Sergio guessed. There's no thickness on the shell elements. However, for this model you probably don't want to use shell elements but solid elements. For that, you'll need to imp…
  • I've added gap conductance to my list. Version 6 is nearly up to beta so probably no new features for that though. But it will have many of the common CCX pain points improved on.
  • That would pretty much be how to do it currently. Though, writing a mechanical .inp file might lead to a lot of manual changes being needed, so after adding the contact, you can change the analysis type back to thermal so it creates a thermal .inp f…
  • Yea re-importing orphaned frd files is something somebody else wanted too to work around a different issue so I might to to add that. No options for show origin and resolution but the next version (v6, beta coming within a couple of weeks hopefull…
  • Error codes 1-4 digit error codes without a P in front are from ARPACK when solving large eigenvalue problems. From the ARPACK manual:           =  1: Maximum number of iterations taken.                 All possible eigenvalues of OP has b…
  • Changing the temporary folder There's an undocumented setting to change the temporary folder which is used by the solver and mesher. This can be useful if the default drive is full. Edit the configuration file which is located in %localappdata%\…
  • Hello Ben. See the sample BeamBendingAndTwisting.liml which is described in the manual (Help menu -> Manual). It produces 4 stresses - one at each of the four corners of the cross-section, and another at a user defined location in the section.
  • I'm just studying this more now so beware I'm not too sure of myself... I think you can ignore air over short distances since it doesn't absorb much radiation at typical thermal radiation wavelengths. In a vacuum chamber where there's radiation …
  • Yep, it's proportional to those things but Mecway also includes incident radiation from the ambient if you specify an ambient temperature. Normal heat flux out of the surface is Q = σE(T^4 - T0^4) T = temperature of the surface T0 = ambient t…
  • Ooh, this is a problem with the software that it allows it to get stuck in that confusing state. What's happened is there's a very large shell offset (20.5 m) on all the shell elements so they're outside the visible range. To correct it, click the n…
  • I still don't understand the need for full slider range after setting the max/min. Can you show an example? The example above looks fine without full range, doesn't it?
  • Yea TIE is probably more permissive of this kind of thing. In the next version I'll make TIE an easier option by just ticking a box. You probably know this Sergio, but for anyone else, its weakness is that it requires the surfaces to be coincident a…
  • Nodes 33 and 34 are slaves of two different bonded contacts which isn't allowed. Also, the constrained nodes at the ends of the beams aren't allowed to be bonded contact slaves at the same time. A workaround is to extrude a small extension at the …
  • There's not much error checking of the liml files because it assumes they were written by Mecway or LISA. You can debug it in a general way by deleting parts of the file until the error goes away. Most items are optional except where they're refer…
  • VTK support which Sergio suggested recently is probably the next thing I expect to do for results export. For now, if you're using the CCX solver, you can write a batch file to automatically open the output file in CGX after it solves. Your toolti…
  • Thanks for those suggestions. The first two I've added to my list but can't promise when. As for the max/min sliders, I don't quite understand what's wrong with the sliders not being at the top and bottom. Is it that sometimes they're so close tog…
  • I just noticed the mesh isn't properly connected in some places. Use View->Open cracks to reveal the gaps and Mesh tools -> Merge nearby nodes to correct it.
  • I'll have to investigate because it certainly seems like a bug. No idea what's causing it yet.
  • Yes but it's difficult so I don't plan to do that.
  • When I tried it didn't show any worrying penetration, though there were some strange graphical glitches with transparent elements in the solution. How far was the penetration and on which parts? Be aware that the default deformed view scaling fact…
Avatar

Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!