AutoCAD Inventor :: How To Calculate Flex On Metal Ring - Stress Simulator
Oct 15, 2012
I am trying to calculate flex on a metal ring I have designed and are a bit confused with the contacts that I am getting when using automatic contacts.
Please see the pictures attached for reference.
When I use automatic contacts I get all bonded contacts, but I get the impression that bonded contacts are welded and that is not the case with my design it is bonded using bolts.
Which contacts would you use for this part? Or should I simplify it? Can I run it in the stress simulator?
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Nov 26, 2012
I am trying to learn how to carry out stress analysis within inventor and have applied what seemed logical to me, however when I got my results file it does not seem to add up.
I want to investigate the effect that a crack will have on a piece of steel plate, I have applied a fixed constraint to one side of the plate, and a load to the other side, as well as a separation contact on the sides of the crack (see file attached).
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Dec 27, 2013
I've been doing a lot of work with the Stress Analysis recently, and I have wondered if a certain feature exits. When I am interpreting the results of a simulation, I'll use the probe to find out the stress in certain areas. The problem is that I can't be certain that I've picked the point of highest stress in a certain area. I know that I can find the highest overall stress, but it's hit or miss finding the 'highest local stress' as I've come to call it. I need to be able to prove that a certain member's stress is below the allowable stress, and I can't be certain of the member's highest stress unless y'all know of some way.
I am running Autodesk Inventor Professional 2014, 64-bit.
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Nov 12, 2011
How to draw in Autodesk inventor Helical Gear using Flex option (this option you can find in SolidWorks) below I put link to SolidWorks where this options allow to preper gear by rotation of existing solid. Where do i find this option in Autodesk?
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Oct 8, 2013
I made an API-spec 10K cross, 7 1/16" x 2 1/16". I got everything done including the passages and boltholes for the studs. But I need to cut grooves for the BX ring gaskets. It is basically a block of steel with two different size holes through the center with bolt circles (and ring gasket groove) at each opening. I am still a bit of a beginner and I am stumped on this one problem. If it were AutoCAD I would have cranked out the solid model in about 15 minutes (or less if in a hurry) but I want to learn Inventor.
Inventor 2013, Windows 7
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Jan 18, 2012
I was trying to extrude a ring formed by two circles with vb.net for a part.
Think I need define the profile with sketch block. If there any sample code shows how to use it? Is there a website like the autocad.net where I can get the sample for the api?
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Sep 11, 2012
I started to model up a lifting cradle but do not know how to progress further.I attached a 2013 version of model done so far. How can i place 4 chains on the top bracket to a ring?
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Jun 24, 2012
I need to dels a ring in concave shape. Its very easy to do it in 3D model in flat shape but how do I do it in Concave form?
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Mar 27, 2013
I have a design I made in Autocad and I would like to test its aerodynamic properties (lift and drag vs velocity from all angles).
How can I import the Autocad drawing in AnSYS without losing data or by losing as little as possible ?
What format should the Autocad file be converted to in order to keep it properties but be usable for analysis in AnSYS?
Used autocad CFD for evaluating lift and drag behavior of a wing at different angles (all angles from all directions)?
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Oct 20, 2011
I`m trying to determine will Inventor satisfy the needs that I`m having regarding simulation options. So I started with some elementary stuff.
If it is possible in stress analysis to manually select which degrees of freedom body has.
"Fixed constraint" block all 6 DOF and I would like to block only transitional DOF so that I keep rotational degrees of freedom?
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Oct 8, 2013
I am trying to simulate the following:
I have an 8" OD/5.523" ID steel tube. A 5.5" OD/4.957"ID tube is placed inside. The 8" and 5.5" tubes are placed over a 4.9375"OD shaft. So basically you have a hollow shaft attached to a drive shaft, with a filler tube placed between them to fill the gap. Two 1-1/2" UNC bolts are placed in matching1.531" diameter holes in every component (thru bolted) with a nut. Tightening the nut will tend to flatten the pipes, taking up the clearance between then and creating a contact pressure on the drive shaft. I have having trouble getting all of the contacts correct since the components are not in contact at the beginning of the simulation due to the radial clearances.
Two axial bolt loads of 129,000 lbs will be placed on the tubes. I have used a sliding/no separation contact between the bolt and nut. Then I put a fixed constraint on the bottom face of the nut (not in contact with the tube) and put a 129,000 force on the top of each bolt head to simulate the axial load created by the bolt preload. What type of contact should I use between the tubes that have radial clearance?
I have attached the tubes and drive shaft. The 1-1/2" bolts and nuts (both heavy hex) were found in the library.
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May 9, 2013
How to set up a symmetric stress analysis?
I read about using symmetric analysis on a symmetric assembly, but no description of how it is done.
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Jan 6, 2014
I am trying to properly stress test a steel aircraft fuselage. I can easily model the estimated weight of the pilot, copilot, etc as loads on the airframe. However, when it comes to simulating a high-G situation, (a load factor of around 7.5 times the force of gravity), I am not sure what to do. On one hand, I can simply multiply the loads on the airframe by the load factor and see if the frame can take it. In most cases, it performs very poorly, (safety factor less than 1). However, if I model all the loads under normal conditions, (normal pilot weight, etc.), then add a gravity load equal to 7.5 G, the airframe performs well. Yet I am not sure if the loads on the airframe, (such as pilot weight), are being adjusted along with the increased gravitational load.
My question is, what is the best way to accurately simulate real world loading for high-G situations?
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Dec 31, 2012
I am trying to determine how to properley constrain the assembly below, so that the compression of the rubber gasket will be properly indicated.
Currently I am seeing the deflection of the shelf in the downward direction, but I do not see any indication of stress in the gasket behind.Currently the gasket is "bonded" to the steel tube the screws are bonded to the shelf bracket and the steel tube.
I put in "work axis" at the center line of the shelf bracket and the CL of the gasket, but I can't find a way to constrain to a work axis.The file is too large to upload here...
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Mar 6, 2012
inventor 2012
64 bit machine
12gig ram
and it says I don't have enough memory! How can this be? Its not that complicated of an assembly. I have done bigger. I excluded all the part I'm not using and they are all basic plate and tube parts. There are less than 20 parts in the assembly.
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Nov 13, 2013
I have used a few times 'Stress analysis' before. Today I discovered it is disabled. I applied a software update (SP1, build 222), after which I could run a Stress analysis again. However, Inventor crashed soon, and after restarting it, Stress analysis is disabled again. In 'Add-In Manager' the 'Simulation: Stress analysis' is shown as 'Automatic/Loaded'.
UPDATE: I have unchecked the 'Load Automatically' option for this module, quit Inventor, started it again, loaded the module and now it seems to work. I don't know yet for how long...
UPDATE2: well I could start a Stress analysis, but everything is disabled there, I can not create a simulation for example.
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May 8, 2013
I have just installed Inventor 2012 on a clients machine and the stress analysis tab is missing.
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Oct 14, 2012
is their a possibility to applay stress like dynamic i have a shaft that has a pully on it , its conectet on an old way
not with a tight fit so it shrinks on it but it works wit a small cut in the shaft where its bolted with just a tiny metal plate.
at this place will be a stress concentration and i wanne see how the noth effect is when their is a dynamic load on it cause if i put a static load on it i know the shaft can handel it but i real life it has broken couple of times so this is what i want to investigate.
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Sep 19, 2013
I work for a tank building company and we are starting to use Inventor for stress analysis. We have a tank that we are designing that has a tank inside of another tank. The internal tank will be holding product while the outside tank is there to prevent product leakage in the event that the internal tank has a leak. There is piping that is welded to both the inside tank and the outside tank.
So here's my question: We know the radial deflection of the piping on the internal tank due to pressure, but we want to know what the stress is going to be on the external tank shell. Is there a way that I can input the amount of deflection and so that inventor will calculate the stresses involved?
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Feb 22, 2012
I'm a student working on a team project to build a vehicle and we're required to do a stress analysis to make sure if the vehicle (chassis, supports, etc) can withstand the weight of the driver, etc.
The problem is that the analysis that I did doesn't seem to make any sense at all, like there was no stress between the joints, the frame bent when the applied force was only 5 kg...
The metal used is mild, steel.
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Oct 11, 2012
I am using Inventor 2009 professional and I have to run a stress analysis on a beam. I put the constraints and the forces I need and when I hit the calculate button, the results so up, but when I click on the results, nothing appears. I need to run this calculation and do not want to resort to hand calculations.
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May 14, 2013
I'm trying to run a simulation on a part to test it's resistance to explosive forces and pressures. All the tutorials I find on stress analysis seem to be grader toward mechanical parts or tables.
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Aug 15, 2013
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".
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Apr 16, 2012
I'm performing a static stress analysis on a benchframe. The benchframe is imported out of a STP file and I assume that's where the problems begin.
When I start the simulation, everything goes well. When I see the results, almost the whole part is blue, and only a really small part in a corner is shown red, with extremely high stresses.
The corner is actually not what I wanted to test, but it is messing up the other visible results because now I have to place probes all over the part to see the stresses (because the colors are calibrated with the high peak).
I have tried working with local mesh control and convergences, but I can't control the results in the small corner. I also tried rebuilding surfaces and adding fillets.
Is it possible to set a maximum stress, so that the other colors are visible in the important areas. It is not possible to exclude the corner from the simulation because it's part of a substantial part.
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Jul 8, 2013
I am having problems creating a Stress Analysis Report from the Dynamic Simulation on this assembly.
My goal is to show the cam shaft rotating at 3500 rpm, and the stress it creates. I am looking to show the stress concentrations at the fasteners as well as the rotating components, the cam will have a torque of 15 ft lb, with a counter torque of the compressor equal to that.
I have been working through Wasim Younis' Book for Inventor 2014, but seem to be coming up short in its application.
I am using Inventor Professional 2014.
Autodesk Inventor 2013 Certified Professional
Autodesk Product Design Suite, Ultimate 2013
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Aug 26, 2013
How to make stress analysis from wood?
Does not allow to choose a wood? I have problem with material.
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Jan 29, 2013
I am having problems with 2013 and trying to access the Stress analysis, when going into environments the tab is consistently greyed out. I made a very simple model and pasted the snips below.
-Environments Tab
-Add In manager.
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Aug 28, 2012
I currently use Factory Design Suite Premium 2012/Inventor 2012 (64-bit, Factory Premium) but notice there is no stress analysis option in the environments tab...shouldn't it be there or is an additional purchase required?
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Apr 2, 2012
so I want to simulate the stress on a payload that is on a rocket. the payload will be exposed to 20g!
My question is do I just put a force on the payload straight downward or can the gravity option somehow be used to get an accurate result?
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May 12, 2013
I have managed to perform a stress analysis on a part (which only 1/4 of it is shown due to its symmetry). Upon running the simulation and displaying the results for Von Mises Stress, all the part has been fully colored in blue, and there are no signs of any red areas. However, the bar line on the left still indicates that there are areas which are highly stressed. I'm now confused weather if there any areas of the part are exhbiting this type of stress, and if yes, how can I locate the most highly stressed parts?
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Apr 5, 2013
I have a question regarding the Stress Analysis in Inventor. I have got a frame generated and I want to get rid of all radiuses on my box sections. All box sections are frame generated so I can't simply go and exclude the radius from my stress analysis. Is there any way to exclude those box section radiuses from my stress analysis simulation so I have proper contact between each part?
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