In the attached report, safety factor is se to calculate from ultimate tensile stress (485 MPa), and it indicates 1.33 with stresses:
Von-Mises: 323 MPa..............SF = 1.5
1st principal: 303 MPa.............SF = 1.6
2nd principal: -181.2 MPa....... SF =2.67
So, how is inventor getting 1.33 ?
EDIT: if I set it to calculate from yield ( 260 MPa) it accurately reports SF = 260/323=0.8
EDIT: added part file
I'm trying to create a report on a stress analysis I've made. Reading the report I don't find any result on safetyfactor. When I was browsing the forum I found a thread concerning safety factor and a report file attached. My report is missing some of the information that I found in this attached report (such as "result summary".
View 2 Replies View RelatedThe company I work for manufactures safety covers of all types. Some are pretty easy to model. The ones made from folded fabric,....not so much.
I have taken a couple of photos and uploaded them so that you could see what I'm trying to model.
As you can see from the photo, it's an accordion like cover that is "U-Shaped". You would install this over a linear rail and have one end anchored to the frame and one end anchored to the carriage. So it would collapse and expand as the carriage moves back and forth.
We call the convolutions "vees" (obviously because they look like the letter V). When you compress the cover the Vee Depth increases. And when you expand the cover it will decrease. The folded section at the ends, at the small "legs" is where I have the difficulty. It's sort of hard to explain. That's why I uploaded the photos.
I'd like to be able to make a single "Vee", and have it have adjustable constraints so that I can expand or contract the cover by adjusting one number.
When using mtext and a background mask and try to modify the border offset factor from the default of 1.5 , the factor reverts back to 1.0. If I type in 1.25 or 1.75, it will not save it and revert to 1.0. If I put in a larger number like 2.0 or 3.0, that factor will be retained.
View 4 Replies View RelatedI was hoping that there would be some fire extinguisher and safety templates available. I am doing up a Fire evacuation plan.
View 3 Replies View RelatedMy company recently installed Inventor 2013. In previous versions we used a part with negative density similar to seawater to calculate submerged weight and CoG.
In IV 2013, it seems that the ability to calculate negative mass is not longer available.
This is how it worked in pre 2013 IV, when I could specify a negative density.
What I have is a spool made of steel. This spool is modelled as an iAssembly with four configurations:
-In air, empty
-In air, filled with glycol
-Submerged, empty
-Submerged, filled with Glycol
For this example, I now need three parts:
-Steel Pipe
-Glycol derived from the inside volume the pipe
-Seawater buoyancy derived from the outside volume of the pipe.
Each part has its own density, and the assembly weight and CoG correspond to the assembly configuration (with or without glycol) and environment (in air or submerged).
The seawater buoyancy represents the water displaced by the total spool assembly, regardless of the contents. To achieve correct weight in the submerged state, the buoyancy material has to have a negative density.
I do not want to make any of the mass parameters static, and I also fear that the CoG might not be updated correctly when using that method.
As I no longer can define a negative density, any optional method to achieve this without overriding the mass value.
Autodesk Product Design Suite 2013 SP1
Win 7 Enterprise 64bit
Intel Xeon CPU E3-1240 V2 @ 3.40GHz
16Gb Ram
Nvidia Quadro 2000
Questions below pertain to using Autodesk Inventor 2013:
What factor of safety value the Shaft Generator program uses when you run the calculations?
Does the factor of safety value change when you are not using the inventor user material option?
Lastly, when exactly do you know when to use the density option in the calculation properties or not?
I am trying to calculate the area of our parts. I was trying to do the math my self but I kept getting a lower area than IV. I haver attached a picture of what I get from IV. I have listed my calculations of the angle iron below:
I am using IV Pro 2011 Educational SP1
i7 2600
8GB ram
1Gb GTX 560
Cart 72 lbs 4006 sq in
All calculatoins are in ^2
(4) 2x2x1/8x48=92.928, 371.712
(4)2x2x1/8x33=63.888, 255.552
(4)2x2x1/8x29=56.144, 224.576
(2)2x2x1/8x32.669=31.623592, 252.988736
(4)2x1/8x2=32.912
Total = 277.495592, 1137.740736
I would like to know what calculation on the length of a folding feature is performed by Inventor when one folds it. Read my example to better understand my question.
I am trying to fold a part of my sheet 90 degrees, I am going to call the folding part sheet B and the rest of the sheet, sheet A. Now, understand that when I fold sheet B 90 degrees, its face will no longer be parallel to sheet A, but the face of its thickness will. Consider this, now: when I fold the sheet B, there will be an inner part of the folding (which will have the faces of both sheet sections 90 degrees from each other) and the outer part (which will have an angle of 270 degrees between them).
I want the distance between the thickness face and the outer face of sheet A to be X in length. Which is the intial length of sheet B for this to happen? Consider using the BendRadius, Thickness, and other Inventor Sheet Metal parameters that will participate in the equation.
The question surged because I wanted such distance to be 5 in a part with a Thickness setting of 0.5 (as well as BendRadius), but because of this folding length calculation, I had to make sheet B 5.631 in length.
I have a part that I want to have made by rapid prototyping that will in turn be used as a pattern for casting alloy metal parts. I need to apply a factor to the part to compensate for the shrinkage that occurs when a metal part is poured in a molten stage and will cool to slightly smalller dimensions than the mold. Is there an easy way to do this without having to recreate the part to slightly larger dimensions?
View 2 Replies View RelatedHow to create a dome using just the surface area?
View 1 Replies View RelatedAny way, using iLogic, to get the K-Factor from a flat pattern sheet metal view on an idw drawing and add it as a note.
I'd like a rule that would access the flat pattern on the drawing, get the K-Factor value and then create a note that says, for example, "K-Factor Value = 44".
I see in the iLogic Snippets there's a Get Active KFactor under the Sheet Metal section, but I don't know where to start.
I've has Inventor tell me this for thin walled tubes with holes in them, but not for a simple part like the attached one. Autodesk are you listening yet? This has been an issue for a long time. Mass calculations for parts with holes on curves do not work properly. On many parts the error comes up with "low" selected. By default each time I try to save the file, the error window pops up.
View 8 Replies View RelatedI have a problem acessing the fatigue calculation panel in the bolt connections´ tool. Whether I press enable or disable I simply can´t acess it. What should I do to access it?
View 4 Replies View Relatedi want to ask is there any scale factor function in Autodesk Inventor 2012?
this is because all my drawed part are already full constrained and I want to enlarge it to some factor?
I have a set of sheet metal parts modeled in inventor that are produced in a wide range of sizes and several different sheet metal types.
The dimensions (length, width, flange size, etc) are driven from a spreadsheet. I would like to be able to have the user update the K Factor from the same spreadsheet by selecting a sheet metal type.
The sheet metal type and K factor are not listed in the parameters list with the other model dimensional data, so I'm not sure how to proceed.
When I used earlier versions of Acad I used to be able to do a calculation within a command. Like if I wanted to offset something equally on each side of a mid-point I could start the offset command then for distance I could put in the distance I wanted/2 (ie if the total distance between the 2 lines needed to be 85.375 i I could do 87.357/2). Is there some setting that I am missing or is this something that has disappeared from Acad?
View 3 Replies View RelatedI have an existing contour surface. I would line to calculate the volume of topsoil which will be 300 mm following below the existing contours.
View 3 Replies View RelatedI have a point from an xref and I need to find the corresponding point in the current CAD file.
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I have a requirement to create a block with a few attributes, but the attributes require a bit of composition behind the scenes. Here's an abstract example.
I need a block that represents a computer's identity. Each computer has 2 references that need to result in attributes that I can extract. One attribute is a unique reference across the project, and the other attribute is a room reference, and many computers can be in the same room.
Here are some example references.
Computer A
Unique Reference: DF.SALES.01
Room Reference: DG.SALES.07
Computer B
Unique Reference: DF.SALES.02
Room Reference: DG.SALES.07
Computer C
Unique Reference: DF.SALES.03
Room Reference: DG.SALES.07
Computer D
Unique Reference: DF.ADMINISTRATION.01
Room Reference: DG.ADMINISTRATION.02
Computer E
Unique Reference: DF.ADMINISTRATION.02
Room Reference: DG.ADMINISTRATION.02
As you can see from the above, the 'common' part for a computer is the middle 'SALES' or 'ADMINISTRATION' part, which 'technically' only needs to be put in/typed in by the user once for each computer. I need to automate this process to reduce user input error, such that they only enter 'SALES' or 'ADMINISTRATION' once and don't end up creating the below, which would be invalid.
Computer F
Unique Reference: DF.RECEPTION.09
Room Reference: DG.SALES.07
Thus I imagine I need a third property/field/attribute to specify 'room', and then formulate the Unique Reference and Room References, using this 'room' part in the middle.
The end goal here is that I need to be able to extract the above two references for each 'computer/block' and get them into Excel, and I need to be able to modify the 3 properties (room, unique reference and room reference) quickly, ideally using something like EATTEDIT, which is how we have edited attributes in the past.
The use case above is abstracted, it's actually not for computers at all but I figured it would make more sense than complicating it with the actual application!
I don't use the area calculation tool that much. I was just working out a large area for concrete. I use TOOLS - INQUIRY - AREA. Thats all fine and it gives me the area, for instance, to keep it simple 4900 x 9000 = 44.10m² AutoCad displays it as 44100000. I know it's not a major problem, but is there anyway I can get it to display as 44.10 or at least lose all the zeros.
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View 7 Replies View Relatedhow the area calculation works for finding the square footage of a dwg.
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volume dashboard on which method of calculating is based. Why sometime are different, huge differences between counting volume based in "computer materials" which of 3 is the best? for calculating? I am using very often average end area, is that correct?
View 2 Replies View RelatedI'm new in civil 3d road design so my question may be basic.when i prepare a corridor and proceed to get cut and fill it appears as zero.i think i made some mistake at a stage when in section line we decide surfaces..step wise from section line selection to cut/fill calculation also give me the general concept regarding selecting surfaces during cut/fill volume calculation?
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View 7 Replies View RelatedCalculation of resistance, making a simulation for an aquarium stand. Stand must support about 900 kg., Is made of 18 mm chipboard, combined with screwing.
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How to get multiple objects area easily. i am using auto cad 2009.
View 2 Replies View RelatedI attach picture 1 and 2.
I need to create surface like this picture 2. I need crate surface by joining 1, 2, 3 like as picture 2 section, but when i crating surface its joining as picture.
This problem have been found . I created a tofo of the rock which rock is bend lower picture 2 section to calculate the volume i need the surface create like this.
