AutoCAD Inventor :: Center Of Gravity Not Correct For LOD
Sep 22, 2010
I have a LOD in my assembly to suppress some of the components. In the assembly, it looks like the center of gravity is correct for the LOD. Now I place this assembly in an idw with the LOD active. Now I right-click on the assembly in the idw and choose "Center of Gravity". The center of gravity shown here does not represent the center of gravity for this LOD. The CG shown represents the CG of the master LOD.
Is it possible to get the center of gravity to show on the idw that represent the CG of an LOD?
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Mar 29, 2013
I can obtain the Center of Gravity of a sub-assembly. What are the values with respect to? The origin/root of the whole assembly or the origin of the sub-assembly? How can I obtain the coordinate of the COG of a sub-assembly with respect to its origin or with respect to the whole assembly's origin?
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Jun 11, 2012
How do I get the center of gravity to work, by measuring a distance from the origin like Solidworks? I select the “Physical” Tab under the iProperties “Center of Gravity” and it gives me” lbmass”? Also is there a way for it to show on the screen?
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Apr 11, 2012
Structural shape authoring has a parameter mapping for the center of gravity. What values should these be for a C channel where the part origin is at the geometric center and the center of gravity is located along the negative X axis? I checked one of the channels in content center - it had the origin located at the center of gravity and the parameter mapping was the distance to the outer web surface (positive), with the web located in the negative X direction.
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Oct 21, 2011
How can see visually the center mass of a part or assembly?
When I'm checking in the Iprop., I see the center of gravity coordinates, but it there a way to "see" it (some visual representation)
Inventor 2012 Pro.
I7 workstation
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Mar 22, 2013
For some reason it will not let me constrain a part to the center of gravity plains. I would like to constrain lifting lugs to the center of gravity so the model will automatically update itself. Is there anyway to make this work (using ilogic or anything)?
Why would Inventor tease me with showing me the center of gravity plains in an assembly but making them completely useless?
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Sep 22, 2013
I have created assembly (lets call it main assembly) in which there are 4 other assemblies (lets call them sub assemblies).
Now in the main assembly document i want to display center of gravity of each of the sub assembly.
When i open each of the sub assemblies and turn on center of gravity of each of them, when returning to main assembly view it displays center of gravity of main assembly, not of each of the sub assemblies.
Im asking for this because i want to create a drawing of main assembly and add dimensions of each of the sub assembly centers of gravity and unfortunatly just as in assembly view, when i want to display center of gravity i can do it only for the main assembly not for each of sub assemblies.
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Oct 21, 2011
I am currently trying to show a comparison of Center of Gravity between two assembly's. One is the original state and the other has counter weight bars. I know how to get the COG to show on my drawings, but both COG locations are the same in my drawings (but different in my assembly) My problem is when I create View Representations and I toggle the Counter Weight bars off, the COG in my drawing still remains in the same location as if they were still on. I know the hard way of accomplishing my task would be to save 2 seperate models (one with Counter Weights and one without). But I would like to take full advantage of the Representation Option. Using IV 2012 Pro.
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Dec 20, 2010
How on earth do you show the COG on a drawing in inventor 2011?
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Mar 19, 2012
I am trying to retrieve center of gravity in my assembly, I now already coordinates given by iporoperties, now i want to measure to that specific point, is it possible to do it? or to actually show the center of gravity in the assembly?
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Aug 27, 2013
I am trying to apply a load lengthwise on a 2 x 2 x 3/16 angle at the center of gravity using "stress analysis" in inventor pro 2014, but it won't let me apply the load at this point. I know that the load would be floating in the air at the center of gravity, could this be the issue?
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Aug 1, 2013
I am trying to pinpoint the center of gravity on a curved face of an assembly. I can use the c og G command to get the true center of gravity but i would like to incorporate lifting eyes into the finished assembly. Basically I need to know how to find the C of G on a given surface. I have attached the assembly I am working on and added lifting eyes roughly where I would like them. I have tried measuring from the C of G to a face and then creating the lug above the C of G but somehow it doesn't line up.
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Apr 29, 2013
Ok received parts from a customer. It was ALL mesh features.I converted some of them(the mesh features) to Solids. Some would not convert to solids (converted to surfaces).
I need to have the COG show up correctly. Yes, I have a physical COG. I know where it is supposed to be.
I am trying to use this and several other parts (with mixed, Solids, Surfaces, Mesh features), in an assembly AND balance it all thru a common lift point.
How can I correct the COG of the individual parts, so that the assembly is correct.
I have work planes for the corrected COGs, but I am afraid that I will need to calculate the new COG for the assebmly.
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Dec 27, 2013
In the iProperties, in the Mass properties are the coordinates of the center of gravity. i guess they relate to the center point and axes in the main origin folder, right?
How can i show and measure from the genter of gravity symbol in parts and drawings?
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May 8, 2012
I'm trying to build a VBA code in inventor 2010 to export the Center of gravity coordinates (X,Y,Z) from an inventor assembly to an excel sheet.
But I'm not able to get the iproperties for the COG from my assembly.
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Dec 22, 2012
is it possible in AUTOCAD to know the CENTER OF GRAVITY OF A VEHICLE?
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Jul 19, 2012
I have tried just about everything and the mass properties center point of gravity is coming out incorrect.
I have created a box 300x300x300 with the center of the box at 0,0,0 (for testing the cg) . The result I get is not 0,0,0 one of the values always comes out to be not zero, depending on the orientation of the box. Is this a bug?
Dim cg As Point3d = T.MassProperties.CentroidMsgBox(cg.X & vbCr & cg.Y & vbCr & cg.Z)
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Dec 22, 2004
Is there a command within AutoCAD2000 to establish the centre of gravity of a solid or solids?
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Mar 15, 2013
A coworker brought this to my attention and I was also immediately able to reproduce this. We use content center C channels and other common beams a lot. After inserting one into an assembly if you right click and select change size and edit the length it typically doesn't update to the correct length.
Example:
Insert a 10" Ansi MC/C channel any size
right click and select change size
add +.0625 to the existing length and hit apply
measure it at 10.06252 in
repeat change size and type in 10.0625
measure it at 10.0625
repeat change size and type in 10 + .0625
and measure at 10.06252 in
It seems to mess up more when you do math but it also screws up entering a simple number
10.000325 usually ends up as 10.000315 in for me.
Editing the part directly from it's parameter dialog doesn't yield anything like this.
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Oct 30, 2012
Is this type of gravity experiment possible with dynamic simulation?
[URL].........
I made the cone ramp and double cone but the cone either goes the wrong way or only moves a few inches in the correct direction and then gets stuck. I’m using 3D Contact Joints and Spatial Joints and Gravity Force.
Version = Inventor Pro 2009
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Jul 24, 2013
Im trying to figure out if Inventor's dynamic simulation can simulate gravity on rope or cable shaped solids.
I have a power cord design that I want to display with its cords in various natural positions (IE Flat on a table, hanging from a wall, etc). (see image attached)
My questions are as follows:
1. Can dynamic simulation simulate a rope/cable type object falling with gravity to a natural hanging position?
2. If it can, can I also then save the resulting new shape/model and export it to showcase for rendering (or render within Inventor)?
3. I am currently creating the cords using the sweep command. Using this seems like it may cause problems for the simulation. If I use the wiring harness design part of inventor to create the power cables can it then simulate the cables naturally falling and resting due to the forces of gravity? I know the wiring harness design area is built in, but I have never even opened it before..
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Apr 8, 2013
I wonder how to convert the centre of gravity of a part into a work point.
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Aug 22, 2013
I'm having some fits with the constrained orbit center. It seems to me that It used to always be in the center of the screen when I would use Shift and CMB. Now it seems to be stuck on the center of my assembly/part. I know that I can hit F4 and long select LMB to re-center but I have never had to do that before the last day or two. I have uninstalled all the Beta Add ins I had installed and I have even uninstalled and reinstalled Inventor Pro 2014.
Is there an option somewhere that puts the default Orbit Center to the center of the screen?
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Jun 18, 2012
I can't get Inventor 2013 show a custom iproperty correct.My iLogic rule is this:
iProperties.Value("Custom", "myvol")=volume = iProperties.Volume
But the custom iProperty is a Yes or No.Had no problem with this in Inventor 2011.
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Oct 26, 2012
With Inventor 2013 , user can view iProperties > Physical > Volume. After UPDATE is clicked, the application seems to recalucate and display mass information. How do I accomplish this task with API? I tried looping through all Occurrence objects, then access MassProperties.Volume, but the numbers do not match what I got from the Inventor application. The API seems to give me the Volume before the model construction (add parts, extrusions etc.) I need volumes after the final assembly.
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Feb 1, 2013
My boss has designed a gravity project that has 21" PVC. Civil 3D 2010 only has 20" PVC, not 21". He basically said 21" PVC exists (JM Eagle) so make it happen. So how exactly can I add a new size to the Parts Catalog under PVC?
Windows 7 Prof w/ SP1, 64bit, Xeon 3Ghz, 16GB
Civil 3D 2013
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Sep 21, 2013
I was checking my prints and noticed that the mass for the assembly was not shown correctly. The mass for each component is correct, but the mass for the assembly is less than the total mass of the parts..... how can that be?
Watch this video. The mass for my assembly is reported from iProperties as 10 lbs, but the mass for one of the parts is 60lbs. I would expect the mass for the assembly to be at least 60 lbs, but it is not. I tried a "Rebuild All" and an "Update Mass" on my assembly, but that did not fix it (30 sec mark in the video).
This assembly is part of a much larger assembly (around 35,000 parts). There are several more assemblies doing this and I need to get the mass correct.
I am using 2013 x64, SP2.
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Sep 5, 2012
I have not seen this issue happen in quite a while. I saw it on earlier releases pre-2013. But now after the Update2 build it seems my IDW's are not behaving properly.
Scenario:
1. Create model of a raw material (steel) stamped bracket. It receives its own part number
2. Create iam using the unpainted bracket and then assign a color (red) to represent a painted finish. This receives a new part number due to our MFG process.
3. Create iam model using other "painted" sub assembly models (step 2 for instance). New part number.
4. Create IDW but it shows the raw material (step 1) rather than the painted model. It should show the painted
Boxx Technologies 4920 Xtreme - Win7 64bit
Intel Core i7 3960X @ 4.5 GHz - 64GB RAM
NVidia Quadro 4000 - Quadro 600 - Tesla C2075 (driver 307.45)
Product Design Suite 2014 (SP1) - Vault 2014 Pro SubRel1 - CFD Sim 2014 - Bunkspeed Pro 2012
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Aug 29, 2012
I have a sketchblock in a sketch that I need to postion into the correct quadrant. I have dimensions on the sketchblock that are told to be driven while running the quadrant position task shown below. see image. Sketchblock is currently in quadrant 1 and I need to be able to push that into the 3rd, thus the (-200,-200).
ThisApplication.ActiveDocument.ComponentDefinition.Sketches(1).SketchBlocks.Item(1).Postion.X = -200
ThisApplication.ActiveDocument.ComponentDefinition.Sketches(1).SketchBlocks.Item(1).Postion.Y = -200
After it is in the correct quadrant I power the dimensions to constraint the sketchblock into correct position.
The question is, how do I position the sketchblock in the correct quadrant via 'position'?
Not working.
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Mar 2, 2012
what method do i use to place random holes on the part file attached.how do i place the holes with the correct angle? I`m unsure on how to perform the task of placing the holes randomly around the part with correct angle. How can I do this for 3mm holes?
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Aug 24, 2012
I am working on updating my Parts List and ran into a little issue. When I make a Parts List with components from the content center, in this case some angle, I cannot get the correct precision.
See attachment.
The first picture shows the correct units in the QTY column but I would like the 2.000ft to just be 2ft. If I modify the style to correct the precision it adds the units to every item in the QTY column as you can see in the second picture.
Is there a way around this without editing the Parts List each time I create one?
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