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Victor
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Sergio: Thanks for such detailed suggestions. 1) Frictionless support does this if all the faces lie in the symmetry plane, which they should do anyway. One weakness is quad4 shell edges which might be tilted if the element isn't normal to the sy…
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Picture of model in previous message.
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That's an idea. Here's an example using bonded contact to transmit the forces from a large number of nodes to a smaller number, then beams to transmit them to a single fixed node that gives a reaction moment and force for the whole surface. You cou…
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What do you mean by API? There's no documented Application Program Interface. In case you mean having a ribbon instead of menus and toolbars then yes, I do expect to do that, maybe for the next version.
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Thanks for the support all of you. 1) Harmful file warnings should become less severe after more people download it and Windows/Chrome learn about that. I'm also hoping to start using code signing which should help gain more trust with them too. 2…
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Yes. Version 4 will have a pressure load which you can define by a formula as a function of x,y,z,t. So you can make a wide range of pressure distributions and combine them. I expect to release a beta version in the next few days.
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Let us know if you have any more trouble with it. Please do a simple model of fabric first to make sure the bending stiffness isn't too high. I haven't tried making solid elements that thin before. You'll need to use quadratic elements, probably hex…
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The 3 element types have different levels of completeness of their physical model. In order from most to least: 1) solid 2) shell (no normal stiffness) 3) membrane (no normal, bending or shear stiffness). A shell and a thin solid can usually be use…
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There are a couple of built in options: File -> Print File -> Save As -> PNG Images (*.png) They both take a screen shot of the graphics area. So you should resize the window as big as possible first. Using the png file, you can print it wi…
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Hello iii 1) There isn't an elegant solution. Your second suggestion is probably the most general. One way to do that is by extruding a thin layer of elements out from the edges. Then you can use the newly extruded nodes for the symmetry constraint…
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Sure, you're welcome to share it with them. Sorry about the dxf, I've just added it to the forum's allowed file types so it should be OK now. I'm attaching a file here just to test it. Mecway can mesh a 2D dxf file with simple closed shapes using …
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That's a fascinating looking program - CAD in a single file?! I tried opening both STEP files in various programs with these results: tute01wfrm.step: Mecway - no. Error message FreeCAD - no. Appears blank ShareCAD Viewer online (http://beta.share…
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Hello VITTAL_S_S. Those are all good points by Sergio. For a comparison to LISA, see this other thread http://mecway.com/forum/discussion/71/mecway-or-lisa#latest but be aware it's a bit dated so there are now more new features besides those mention…
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Hello Fol Mecway doesn't support open/close type contact between two parts yet so unfortunately this won't work. The frictionless support is for sliding of one part against a rigid surface. If you can consider the metal part to be rigid, then you c…
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Sergio: No but I expect it to be ready in a month or two. johan: I see what you mean now, thanks for the suggestion. I might try to add it as a labs option in v4 but not sure. What are the useful ways to represent the stress in this case? von Mises…
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That's right, there's currently no automatic reaction moment. You could do the calculation using a spreadsheet by exporting the reaction forces along with node coordinates from the Table.
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rhoka: The sandwich material in LISA is/was just a special case of laminate, which Mecway has. However a soft core with stiff skin can be very inaccurate so this is often a bad way to model an actual sandwich panel. See this other discussion showin…
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This is still something Mecway's own solver can't do unfortuantely. You could export to .inp and solve it with CalculiX. That would require some manual editing of the .inp file if you need any special features.
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Thanks for the suggestion johan. There are a couple of related labs features but not exactly what you're asking for: 1 turn on the labs features: Tools -> Options -> Labs Note the warning that appears. Then check: Tools -> Labs -> Outp…
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Version 4 will have an easy way to use contact with the CalculiX solver. The current version 3 already has "compression only support" which is contact against a rigid surface of the same shape as the model's surface. Thanks for the suggestion about…
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Hello mlarm Not sure if I understand quite what you're doing, so here's a picture of my interpretation. If the ground slab is effectively fixed (very massive and stiff) then you can put fixed supports under each isolator and ignore the ground slab…
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Hello apadzak, rhoka and VMH. Sorry I'm a bit late in this thread again - somehow it's not sending me email notifications so I didn't see your posts. I'll add some more flexibility for colors in v4 - possibly an option with more distinct colors or …
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Hello rhoka, sorry for the delay, I just noticed your post. I'll look into adding those units. You can change visibility after solving by using the other Components branch under Solution in the outline tree. It used to have magenta but I removed …
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I'm working towards that as part of a bigger redesign for the postprocessor but it probably won't be ready for version 4. Can you explain your use case? I see it as inconvenient having to check 2 or 3 different stress plots as well as the outline t…
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Hello J_Marc The asymmetry is because the elements' local coordinates (U,V,W) aren't all aligned the same way and the moment per length is shown in the element coordinate system. You can see their orientations by turning on the Show element axes bu…
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The axisymmetric analysis type is fairly limited. Instead, you can revolve the 2D mesh into a thin solid wedge, even just a couple of degrees thick and solve it in 3D with all the 3D capabilities. You'll need appropriate symmetry constraints, which …
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Good idea. I may need to add some more sophisticated examples such as joining a shell to a solid or spreading a load like you're doing. There's a very simple one at the end of the tutorials manual but it's just coupling two nodes.
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Mecway's constraint equations are very low level so you can only specify DOFs, not entire nodes. To do all directions, you would have to make 3 equations, all identical except using different DOFs - x,y,z. This is where the text field comes in handy…
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Thanks for pointing this out, rhoka. There's a limitation in that a node typically has to belong to an element to be included in the solution. I hope to address this in the next version. To work around it, just create an element on that lone node. …
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Not much documentation on the formulations sorry, other than p48-49 of the manual. They're pretty much the same as you'll find in many textbooks. The shells are flat plate elements combined with membrane elements. Quad4 and quad8 use reduced integra…
