AutoCAD Inventor :: Use Symmetry To Simplify A Finite Element Model
Aug 11, 2010
I've been trying to use symmetry to simplify a finite element model. Why I see different stress results in these two instances.
Simulation 1: Rectangular Hollow Section, capped at both ends, subject to internal pressure
Simulation 2: Half model i.e. RHS split down the middle lengthwise, with a frictionless constraint applied to the split plane.
Actual problem I want to analyze is a bit more complicated and I was hoping to use symmetry to reduce the processing time?
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Sep 19, 2011
we've made a part from an assembly and put the stress analysis to the test. Unfortunately the analysis doesn't complete it's run, because of an error:
"An error occurred while creating the finite element mesh. The cause may be invalid geometry or features that are extremely small in comparison to the overall dimensions of the part. To fix the problem, please suppress those problematic features or use standard meshing method."
We can't change the thickness of the sheet-metal, because it's a model which comes from a supplier with a different cad-program. And supressing any features isn't possible, because it's a base-solid.
But where can we change it to the standard meshing methode? The program is recently re-installed on my computer, the settings haven't changed since it's been installed. We can't find the feature.
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Mar 30, 2011
How do i add a symmetry to my box model in 3dsmax where when i move a vertex,edge,polygon etc on one side the same thing happens on the other side instantly. I've seen this done in zbrush and xsi wondering how i can do this on 3dsmax. I've used the symmetry modifier but the other side does not move when i edit the other.
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Mar 19, 2013
i want to apply the symmetry mode only for the red polygons in my medel.
how can i do this?
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Dec 19, 2013
Did the ability to add multiple envelopes to a single part not make it to 2014? In the demo video from Autodesk it shows you can do that but I don't see that button in 2014?
Running 2014 Product Design Suite Ultimate
Windows 7 64 bit
90G OCZ SATA 3 SSD (My SSD is faster than your HDD)
Core I7 920 processor, ATI HD6970 graphics card, 12G Corsair RAM
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Aug 28, 2012
I am trying to simplify find tool as filter in AutoCAD in Inventor(please find attachment img1) as shown in img3 creating a user form and selecting entities with category property straight away.
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Sep 17, 2011
Why my result from stress analysis isn't symmetry?I am modeling a telescope support system. The result I got from the analysis always not symmetry, the difference is very small therefore I think the test setting shouldn't have any major problem.
The difference could be cause by the round off during the simulation, if I am right about it, is there anyway to improve the result?
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Aug 8, 2012
Is there a finite number of plugins that can be installed with PSPX4?
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Oct 29, 2013
I have a rectangular component pattern which started out with all components. As more structure was added around it I started supressing different elements to suit, now a piece of structure has gone thru element 1 but i dont seem to be able to supress it... is there an easy way to get rid of element 1 without having to redefine the pattern? (redefining causes me other problems)
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Apr 3, 2013
I am trying to understand how to select element of pick point through API.
I have found example in API manual, chapter "Interactive selection". Everything seems be clear but finally this example (and also others which I have found on web) doesnot work as I am expecting.
There is example:
Public Sub TestSelection() ' Create a new clsSelect object. Dim oSelect As New clsSelect ' Call the pick method of the clsSelect object and set ' the filter to pick any face. Dim oFace As Face Set oFace = oSelect.Pick(kPartFaceFilter) ' Check to make sure an object was selected. If Not oFace Is Nothing Then ' Display the area of the selected face.'''' there is cursor and content menu correct
[code]...
I am able to select face, during selection is cursor shown as arrow with plus symbol, content menu show correctly zoom and pan commands. Unfortunatelly when this selection is done and message box show the value, the cursor and content menu does not return to correct state. Cursor is still with plus and content menu with zoom&pan. I have found that problem is with messagebox, just before messagebox is shown the cursor and content menu return to correct state , but after messagebox is shown and closed, then cursor and content menu is wrong. Why?
Finally I need it for my addin in C#, is there and better way how to select item or input 2d point?
I use Inv 2013.
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Nov 29, 2011
Is there a way how I can unselect element one at the time?
Example if I do fillets and I select wrong edge and I want to unselect only that because I have selected example twenty edges already and dont wont to throw away all work what I have already done.
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Oct 4, 2011
Am trying to convert this pump into solid ?
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Sep 7, 2011
I need to be able to suppress individual elements of a circular pattern so I can retain the angular orientation while being able to reduce the number of instances. I have found how to suppress the entire circular pattern, but can't seem to get the right terminology to access the elements one at a time.
The code I have to suppress the entire pattern is Feature.InventorFeature("Circular Pattern").Suppressed = True.
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Aug 9, 2012
I'm trying to use ilogic to suppress some individual elements of a pattern but i couldn't find any command that can target component pattern elements. When i try to capture its current state with the right click menu it does nothing.
I can of course suppress the part within the element but then it doesn't update the BOM.
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Jan 15, 2013
My problem today is that I made a Model of a Part of a ship using surfaces rather than solids because the engineer thought it would be easier to bring into ANSYS program for analysis but he is now having a problem with it and I am looking into converting my current model to solid. I can do it but the method I thought of using is quite long winded and we are working to a tight deadline.
1.open up the surface part
2.use "Offset/Thicken"
3.any clashes between parts make a sketch and cut away.
the problem is the amount of plates I have and the time it takes to sort them out.
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Apr 12, 2012
I have a .dxf model and I need the file in .ipt format as a 3d model. (I got the file from a website)
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Dec 19, 2012
I have a long text (using special true type fonts) exploded using the express tools. Problem is that, for example, an "O" became made by a lot of straight lines. So my file becomes heavy weight, and that file has tube cut using a laser. So how can I simplify that text/lines?
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May 21, 2013
where is the option to modify the quality of a surface tham I'm displaying?
For instance if I zoom out, it looks with less polygons, if I zoom in it looks with more polygons.
I've downloaded today some DEM Surfaces with an area of an entire city, and the civil 3d is simplifing automatically the surface... I gave a friend the same surface and on his civil 3d it works very bad without simplifing the surface at all.
I guess there has to be a switch somehere? Civil Engineer / Infrastructure of metropolitan transports [URL]
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May 30, 2012
Below is my test procedure for "Create Curve Mesh Element" by Inventor simulation 2012.
1. I made a box 100(W)X100(D)X20(H) with 2xR20 (mm) fillets at the opposite edges.
2. I copied a box I made for making 2 type mesh.
3. I made mesh on the box without "Create Curved Mesh Elements" option.
Node number: 2374
Element number: 1365
4. I made mesh another model with "Create Curved Mesh Elements" option.
Node number: 2374 (same number, not increase)
Element number: 1365
Mesh shape is different(please refere attachiment jpeg file).
I think that "Create Curved Mesh Element option" is not for making second tetrahedron elements.But I cnanot the true porpose of "Create Curved Mesh Elements" option.For only P method, not H method?
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Mar 4, 2008
We received a surface model from a vendor that I have patched up as best I can, it still has one hole that I can find that I haven't been able to fill. Ideally we would like to have a solid model, but I'm running out of time to get this done and the surface model we have would be good enough for our purposes IF I can get the yellow surface tangent lines to turn off or change their color to black.
I've attached a jpg of the surface model with the yellow lines and uploaded the model here: [URL].....
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Mar 6, 2013
I just downloaded Gimp yesterday and it is way different than the version I had on my last computer. I have things figured out for the most part, the main function I can't seem to find is how to "Simplify" paths. It seems like I used to use CTRL L or something like that and it would smooth out my lines a bit.
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Dec 22, 2012
What is the proper way to apply the symmetry modifier to a sphere ? I created this custom android bot. After I create a sphere with hemisphere I create the eye and split the sphere in two then zero it out on the grid. Then I apply the modifier. When I do that it does not project the other half of the sphere even when it's on flip and x axis. The mirror part is kind of on the back side of the sphere. What happens is I have to rotate the mirror part to line it up and up the thresh hold a lot to get the back side to connect.
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Jun 5, 2011
Whenever i try to create an object using symmetry, convert to nurbs, object doesn't behave like a symmetry but gives off very unexpected result, is there any setting that i have turned off which is causing it?
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Sep 25, 2006
I have aerial photos that I'm going to be using in a map project. Basically, I want to take out all the distracting detail of the aerial photos. The end product should be have a very nuetral color for default, a tree textured light green (forests) and a rock textured gray for rock out croppings ....
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Aug 12, 2008
I am using PS 8 on a Powerbook G4, with other apps such as InDesign CS and i-photo, sometimes printing from a B/W laser printer and doing color with an Epson Stylus Photo RX 600, also scanning from the Epson and photos from two different brands of digital cameras (Casio pocket camera and Olympus standard size).
Color management is a PAIN in the patoot. Every different project demands figuring out a different workflow for color management.
Is color management improved by (easier with) later versions of PhotoShop and/or InDesign? That would be my only reason to upgrade, but if it works I would do it. The printer does fantastic work WHEN I GET THE WORKFLOW RIGHT for the particular project.
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Feb 8, 2013
I'm making a picture and I have a problem - I need a maximum of 2000 anchor points, and I have about 11k.
Seems like I have a lot of unnecessary points, but when I try to simplify the picture gets all messed up. Any other way to fix this?
Here's part of the picture, you can clearly see that a lot of the points don't have to be there..
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Sep 7, 2012
Using CS5. I have a solid shape with a hollowed center (see far left image). I applied a transform effect to make it look "3D" by offsetting it slightly 32 times (see middle image. see far right image to see what it looks like selected). I want to simply have the middle image, but without all the paths and lines - I just I want it outlined. I tried to expand it, group it, pathfinder-add - nothing seems to work.
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Feb 5, 2014
When I use the simplify tool I get a small loop added to some corners of closed paths. It's such a great tool for what I do but it's basically useless like this.
The original
After applying simplify:
And zoomed in to a few of the corners:
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Oct 23, 2012
What is the difference between the Smooth and Simplify tools? Is the Smooth tool the same as Simplify but without the dialog window to set the parameters?
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Sep 7, 2012
I'm trying to model a pillow and I want the top and bottom symmetrical with a round "tubing" around the edges. The problem is that it wont smooth using nurm smoothing across the seem, so i get a fissure where I wanted the tube.
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Apr 4, 2011
I have recently starting skinning my human model and everything was fine until I found out that the chest bone I have on each side of the chest isn't being noticed by 3ds Max as being symmetrical with the other bone. This means I can't use mirror bones or mirror vertices to that part of the model. How to make two bones that aren't being recognized as symmetrical by 3ds Max symmetrical? When using the envelopes in the skin modifier, when I go to mirror the bones or vertices, the two bones are red instead of blue or green to show symmetry. The two bones are relatively in the same place on opposite sides of the model. They aren't the same size but close. Is there something I need to do to make them have symmetry or is there a way to make 3ds Max recognize that you have two bones that you want to be symmetrical?
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