AutoCad :: How To Get Moment Of Inertia
Dec 12, 2011I would like to get the moment of inertia of a deck slab of a bridge on the hatched areas. How can i do it?
View 2 RepliesI would like to get the moment of inertia of a deck slab of a bridge on the hatched areas. How can i do it?
View 2 RepliesHow do I calculate the moment of inertia for a hollow section? Do I need to use Lisp?
View 9 Replies View RelatedHow the mass moment of inertia (kgcm2) is calculated in inventor?
It says it is calculated using negative integral, however i dont find this very informative.
I used the data for a report, and need to justify how i got the center of gravity and inertia properties.
A formula, method or algorithm would be nice.
I am trying to determine the moment of inertia of an L-section using IV 2009. By selecting Tools>Region Properties of a closed loop profile in the sketch environment the moment of inertia is given, however the principal axes through the centroid are at 45 degrees to the toe of the angle (see attached image). I want Ixx and Iyy where the X and Y axes are parallel to the horizontal and vertical toe respectively.
Coincidentally, AutoCAD orientates the principal axes the same when viewing the Region Mass Properties of a similar Region.
I have a problem with Inventor pro 2013 rounding of the area moment of inertia to zero (region properties). For example if I create a new sketch and draw a 1 mm x 0.5 mm rectangle and measure the area moment of inertia it will be 0 for one of the pricipal axes. If I change the rectangle to 1 mm x 0.6 mm it doesn't round it off. Seems like there's a problem with the precision in the calculations somehow.
I have tried to change the document units to microns but the same thing happens.
is there a way to make inventor do this calculation correctly?
I created the gear (helical) in the attached file using the standard gear tool in inventor. The problem is how do i then find the mass moment of inertia of it using Inventor?
View 1 Replies View RelatedI have two sections both region-ed. What is the correct way to find the combined inertia. The sections kind of "fit" into each other. So far I have used two different methods and I don't know which is correct.
1. Centre each section individually, find the section properties of each sections and then add them together.
2. Combine the section, centre them together, and then find the inertia of the combined sections.
So which one is correct? The first one gives a much smaller I value then the second ones.
I ran into a problem with my dimensions. Everything worked just fine until suddenly, in model tab, every new dimension i wanted to draw, looked like this (see .jpg attatchment). I didnt modify anything. Just changed to layout tab for a moment and then back to model. When i changed the text height into 10x bigger just to see the difference, the white dimension line just got wider and thats it.
View 2 Replies View RelatedI am working on a project for an electricity and magnetism class that deals with using neodymium magnets to propel other neodymium in around a ring. Any method of both importing neodymium or any other rare earth magnetic material into Autodesk Inventor 2013 and then running a dynamic simulation on an assembly consisting of those parts.
View 4 Replies View RelatedI'd like to know how inventor defines the center of rotation when you apply moment load on multiple faces at once. I'm not basically able to define where exactly I need that axis to be. and I dont understand where inventor assumes that axis is. if you take a look at attached model, obviously the resultant forces caused by the applied moment are bigger on the single pillar located on the extention, thats why its been displaced more than the others, but where exactly is center of rotation. I'm trying to avoid modeling of the section above this which technically transfers the moment thorough shear pins on the structure I have modeled.
View 5 Replies View RelatedIs there a way to export properties such as Moment of inertial to Partlist or use it as a customer property?
IV10 Pro. SP2
Window XP Pro sp2
Pentium 3.2 Ghz, 3.0 GB of RAM
NVIDIA FX 3400 7.1.8.4
Try to move an object and it does not stay fixed to the move tool cursor, but instead it accelerates off in the direction I initially tried to move it..... but in a sliding inertia type multiplied movement. Have I selected a different mode for the move tool by mistake?
I've checked the pivot point of the object I was trying to move and it was located centrally, nothing strange there.
Also, after the object has wizzed off the screen, pressing undo or [ctrl+z] won't bring it back to it's original location. The undo option is greyed out in the edit menu, suggesting that nothing has been saved in maxs undo history.
System information: Win7 x64 / 3DSMax Design 2014 SP3 / AutoCad 2014 SP1 Lenovo E30 ThinkStation Xeon E31225 Quadcore @3.10Ghz PNY GTX760 XLR8 2GB (334.89 Driver) 24Gb Ram Corsair 650w PSU
Following a hardware change, photoshop automatically re-enabled a feature I had deactivated, the OpenGL acceleration.
I gave up on it 18 months ago because of one thing that incredibly irritated me, the crazy "inertia" when we moved elements.
Let's say you have an open document. The image is too large for your photoshop window, you only see a part of it.
So, you keep the Space key held, and you drag and drop with your left mouse click.
Without openGL acceleration : the moving ends as soon as you release your mouse.
With openGL acceleration : the moving gradually slows down until it comes to an end, meaning you have zero control over your work window.
And, well, that's enough of a bother for me to give up on OpenGL acceleration.
Any way to get rid of this feature ? I searched everywhere I could, I think I tried every one of photoshop's options, but to no avail.
We are running Revit 11 on windows 7 64bit, and we have been having this problem at the moment the local file tries to synchronize with central, revit hangs up and we get stuck in the windows timer circle (which we have dubed the circle of death) as the only way to get back or out of it is to cold boot the system.
View 7 Replies View RelatedI am having a problem where Photoshop does not always give me accurate color display all the time. I am aware of the situation but this has become an issue where I have to edit some photos for a pro lab output. The monitor has been calibrated and delta E is less than 0.5, which is okay.
Attached is the print screen of PS at one moment, vs the print screen of PS at another moment (they were layered and mask applied). Dragging the image U/D/L/R also shows the colour one or another. This becomes quite an issue since I had no way of telling whether I am seeing the correct color, especially when I am soft proofing or converting color profiles for final output.
I've been trying to figure out if it's an object naming thing, or is there a way to not pause between loops?
View 3 Replies View RelatedI'm evaluating Lightroom 5 during the 30 day trial and it's all cool except for this one big annoyance that I noticed immediately when trying to work on an image in Develop module. As stated in the title, moving any slider (exposure, highlights, noise reduction, etc.) causes the image to go very blurry for the duration of the slider movement. It goes immediately back to being sharp as soon as I stop moving the slider. This is super annoying, feels as though my eyes are going bad.
What's interesting is that the problem doesn't show up when I'm adjusting the Tone Curve directly, but it will get triggered if I'll expand and use the sliders underneath. So looks like a bug that only applies to sliders.
This doesn't happen at all in Lightroom 4.4, which I still have installed and can compare side-by-side.
As for the hardware, I'm using the 2013 Macbook Air with 1.3 GHz i5 CPU and 8 GB of RAM. The OS X version is 10.8.4 with all latest upgrades installed.
I've already tried optimizing the catalog, giving it more space (currently at 3 GB) and purging it. I'm not using Smart Previews, although I've turned them on for a moment to see if the problem persists with them on - it does. I've also re-rendered the 1:1 preview for the specific image I've been trying it on. Btw, the file is a NEF from Nikon D300 and I'm using the 2012 process (as was the case with LR4). Not sure what else might be relevant here.
When i use AutoCad 2010, that is on a wind 7 OS, appear a message that indicate the next.
A software problem has caused autocad to close unexpectedly.
In Autocad 2014 when I use the zoom or pan command transparently some information disappears (hatch) and only reappears when I finish the command. This did not happen with version 2009.
View 2 Replies View RelatedI'm trying to attach a hyperlink to a PDF but I keep getting the error message " AutoCAD could not open this file or could not parse a fle of this type". It also won't link to a Word document or speadsheet, but will link to a web page and a notepad text file.
View 3 Replies View RelatedWhy when making PDF out of DWG, many lines comes out vague?
It can be part of a line/block/text.
It shows only on the screen and not on paper in case I print it.
I run ACAD LT 2010 on a Windows XP machine and also a Vista Laptop. I have tried to print the same drawing on both machines using the DWG to PDF facility with in AutoCAD. The drawing is a third party drawing in as much as I didn't draw it although it is an authentic ACAD DWG.
I get the same message but referring to different fonts - the message reads on the Vista machine:
"Cannot find or create the font "ArialMT". Some characters may not display or print correctly"
On the Windows XP machine it reads:
"Cannot find or create the font "Tahoma". Some characters may not display or print correctly"
The message seems to be generated by Adobe Reader.
My computer has 8 GB of RAM. However my autocad is not faster than a computer with 2 GB of RAM. I have Windows 7. Is there a way I can allocate more RAM to Autocad to make it run faster?
View 9 Replies View RelatedI downloaded a titleblock to look at and one of his layers for the lines that made up the bounderies of the titleblock, was placed on the "XID" layer. It was interesting to see that the lines had the properties of Polyline, although to my eyes it looked like a line segment.
what XID stands for in this case?
I have some problem with import SDF to dwg. Geometry in SDF is curve with mixed linear and arc segments.
But the result is not my expected result. (see image below) . All arc segments was imported not correctly.
I'm expecting my data is correctly in the sdf files, but some import mechanism not work properly.
When I make connection through FDO it's work ok.
I've been attempting to use the GEOMAP command to bring satellite imagery into one of my maps. I have followed theses steps:
1. Signed into my Autodesk360 account.
2. Assigned a coordinate system (SC83F) to my map.
3. Entered the GEO MAP command and selected "A" for aerial image.
Following these steps, I am unable to display the aerial imagery.
I've created system printers for our office using the "Add Plotter" application of AC. I've filtered paper sizes for the different printers. However, these filtered paper sizes are not the same for all workstations.
E.g. If I filter out all paper sizes and only check ISO A0 and ISO A1, on some of the workstations there are other paper sizes available. How do I avoid this from happening?
How to make PDF's which were made out of DWG"s less vague?
Same lines can come out looking good or vague. Sometime part of blocks appear vague while the other side appear good.
Using 2013, I have a drawing created in that other software ( Micro station). I opened it in autocad, and did some work to it.
View 2 Replies View RelatedI have created a batch routine that plots PDF’s of a list of drawings. Everything is working ok. It opens the drawing, turns on and off layers, and then plots to PDF. The plots come out fine, but after each plot, it opens the PDF. This would not be a problem for one or two drawings, but when doing a few hundred, it becomes quite frustrating.
I can see how to change this using the plot dialogue box, selecting DWG To PDF.pc3 and editing the custom properties. But no matter how many times I change it does not save, and will open the PDF.
I have found a work around by killing the process Acrobat.exe at the end of the plot. But is there a better way of doing this?
we modeled prototypes of trains (locomotives) in 3dsMax, these models will be used to produce molds and thumbnails of these, you must give the producer STP files, max does not export these files, and we have exported in various formats supported by some programs if exported STP, eg Inventor, we have exported files are STL, oBJ and DWG, so far so good, all save the parts or layers without problem.
The problem comes when exporting from Inventor to STP, nothing happens, the STP file is as if you were empty, there is nothing ..
I have attached the DWG file, if possible, have 17 CAD models for export to STP.