I'm having a try with the inventor simulation and i realized that it doens't use the real stress-strain curve of materials. By this being so, all the stress results pass largely beyond the ultimate strenght of materials. Is there a way of introduzing this curves in autodesk? There is softwares that have this ability, like Solidworks, so there must be a way in Inventor.
View 2 RepliesI 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).
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.
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.
View 9 Replies View RelatedI 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
I am trying to run an FEA in Inventor 2014's built-in stress analysis tool. After assigning materials, fixing the correct geometry, applying loads, and detecting contacts. Originally, I had a problem with a mesh (mesh encountered unidentified problem, but it pointed to certain geometry in the model, which I then removed). When I was finally able to run the simulation, I had an error stop the simulation, saying "element material is not defined". All models in the assembly have materials assigned. How can I pinpoint which element doesn't have a material assigned? How do I assign a material to a specific element? Unfortunately, I can't attach my assembly file.
View 5 Replies View RelatedPossible to run all simulations in "stress analysis environment" by just one click?
I have a large model with three different loadcases (simulations). Each loadcase takes approx. 2-3 hours to calculate and I would like to run all of these overnight, but it does not seem to be possible.
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?
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.
IV 2011.
I have an assembly with a FEA simulation result. I can run a report and get the reaction forces and moments at each constraint. I would like to run a new simulation with different constraints and use the reaction results from the first simulation as loads in the second one.
Currently I do this by running a report on the 1st simulation to get a table of the reaction results. I then manually add those forces to the 2nd simulation. This takes time to type and the forces must be edited each time I re-run the 1st simulation.
Is there a way to use parameters to automate this?
I want to draw hyperbola curve whose equation is x^2/a^2 - y^2/b^2=1. May I use equation curve tool to make the above hyperbola.
I have also made a hyperbola curve of aforesaid equation through conventional method on mathematical ground in the past.
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?
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.
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.
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?
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...
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.
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.
I have just installed Inventor 2012 on a clients machine and the stress analysis tab is missing.
View 2 Replies View RelatedI 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?
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.
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.
View 9 Replies View RelatedI'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 RelatedI'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.
How to make stress analysis from wood?
Does not allow to choose a wood? I have problem with material.
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.
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?
View 4 Replies View Relatedso 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?
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?
View 7 Replies View RelatedI 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?
View 8 Replies View RelatedI was wondering, i m doing stress analysis in autodesk inventor on my parts and when i check displacement results and display them in colours with legend it says that there is max 0.01024 mm displacement but on the screen where i see actual part it looks like it moved for 6mm from original location.
View 1 Replies View Related