AutoCAD Inventor :: FEA Simulation Area

Dec 11, 2013

I've created a successful FEA simulation in Inventor 2014 and obtained results. But I want to see the highest stress in a defined area that is smaller than the entire part (I have some stress concentrations that are throwing off my 'max'). Is there a way to probe an area instead of just a point? I'm tired of creating a dozen probes to find the 'local max'.

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AutoCAD Inventor :: Using IV Simulation FEA Results As Loads In A New Simulation

Nov 29, 2011

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?

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AutoCAD Inventor :: One Way Rotation Simulation

Jan 23, 2013

How to create or how to set a one way rotation joint as a one way bearing will work on real life, is this possible?

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AutoCAD Inventor :: Simulation Results In API?

Apr 30, 2012

I'm developing a program which runs several simulations and obtains the results automatically.

I'm using the dynamic simulation API created in Inventor 2013. For that I use the GetResultValues(ByRef values() as Double) method of the class DSResult. 

I used the method inside the VBA of inventor and worked well. But when I wrote the program in Visual Basic Express 2010, the method doesn't return anything.

I share an excerpt of the

Dim odoc As AssemblyDocument
odoc=invApp.Documents.Open(testPath, True)
Dim dsman As Inventor.SimulationManager = odoc.ComponentDefinition.SimulationManager
Dim dssim As Inventor.DynamicSimulation = dsman.DynamicSimulations.Item(1)
Dim oJoints As Inventor.DSJoints = dssim.DSJoints
oJoint = oJoints.Item(1)


The method GetResultValues(values) should modify 'values' to a time,value vector.

It works well inside Inventor, but doesn't in the program in VB, although it runs the simulations and does everything else right.

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AutoCAD Inventor :: How To Use Dynamic Simulation For Nut And Bolt

Oct 5, 2013

How to use dynamic simulation, i am creating a bench vise and woud like to animate it going in and out how would i do that?

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AutoCAD Inventor :: Suppressing Features In Simulation

Sep 29, 2011

when in simulation, if you suppress a feature is it totally taken out of the simulations workings?

I.e. if I was working on a project like some weighing scales and I had a load of objects on the scales and I then suppressed some of the objects, will the scales rise up a little to counteract the reduced weight?

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AutoCAD Inventor :: Gravity Experiment Simulation

Oct 30, 2012

Is this type of gravity experiment possible with dynamic simulation?


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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AutoCAD Inventor :: Dynamic Simulation - How To Add New Load Using API

Dec 11, 2013

I am trying to discover the dynamic simulation, so I need to know is that possible to create a new Load(Torque, Force) using API?

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AutoCAD Inventor :: Motion / Simulation Settings

Jul 13, 2012

i'm developing a hexapod robot and i want to simulate the motion of the robot's leg. The mechanical of robot's leg contain a servo motor that variate your angle between 0 to 330 degre. How can i delimite the angle of servo's rotation?

Other questions, is about the fixation with bolts. How can i do for the motion simulation respect the connection of the bolt? when i do a dynamical simulation the parts that contain bolts don't stay joints, i have to do a rule of fixation with constrains?

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AutoCAD Inventor :: Dynamic Simulation Atomization In API?

Apr 10, 2012

I'm designing multiple elements for a vehicle. I need to evaluate multiple dynamic results of multiple possible designs. All the design is parametric so it modifies quickly but I can't find a way to run the dynamic simulation multiple times automatically and get the results from the output grapher for each simulation. 

I am trying to do it via API but can't find the class of the dynamic simulation environment in the Object Model Chart to program it via .NET. 

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AutoCAD Inventor :: Dynamic Simulation Menu

Sep 26, 2012

I have installed inventor 2011 on my laptop, but the dynamic simulation menu does not appear even though I 've been many times to install it.

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AutoCAD Inventor :: Unable To Create FEA Simulation

Oct 21, 2011

I have a very simple part I am trying to check using FEA; however when I get into the Simulation environment and click 'New Simulation' from Ribbon nothing happens.

The part in question is just a simple cylinder (I'm verifying what would be the best meshing spec to use in a larger assembly).

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AutoCAD Inventor :: Using Trace In Dynamic Simulation

May 25, 2013

I am playing with traces in dynamic simulation and in the output grapher i get values for position like:


and in the graph i get some values of the position but i am unsure on where the datum is at this point. I would of thought that the datum would be where the trace is attached? Where the datum is based and is it possible to set a relative datum to when the trace is set?

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AutoCAD Inventor :: Error Getting Simulation Results Via API

Apr 18, 2012

I'm running several dynamic simulations via the API. Then I am getting the results to write in a text file. I want to know the force in a joint so I get the vector of values via

Dim oResults As DSResults
Dim oResult As DSResult
Dim value() as Double
Call oResult.GetResultValues(value()) 

this vector is a time, force vector but when I verify mi data against the Output Graphe all the decimal points from the force information are gone.


In Output Grapher

Time (s)Force(N)

In the vector from API


is there a way to correct this? I'm getting many force and movement info, so I don't know which ones are reliable.

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AutoCAD Inventor :: Applying Force In Simulation

Nov 16, 2011

Is it possible to set a time delay on an applied force in simulation 2012? I would like to apply a force for a set amount of time?

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AutoCAD Inventor :: Dynamic Pressure Simulation

Mar 20, 2012

I have a question regarding simulations in Autodesk Inventor.

For example I have such part: 

It is a plug made out of brass. I want to test if it will be able to withstand specified pressure. So I set up where is it constrained - on thread.

And set up pressure from inside on the cap to be 16 bar (1,6 MPa). And also assign materials. And there goes simulation . Everything seems alright. I want to run little bit different analysis. When pressure would be variable.

For example I will have pressure going from 12 bar to 16 bar, and such simulation will be running for quiet long time (as an example pressure will be 12 then raises to 16 then goes to 12 again and then raises to 16 again). I want to know after what time will this plug fail and will be destroyed? I mean i want to know when METAL will get tired and will be destroyed? I was just wondering if such a simulation is possible to be made in Autodesk Inventor?

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AutoCAD Inventor :: Measuring Forces During Simulation

Jan 7, 2013

If you can imagine a cylinder sliding on curve joint. Let’s say the curve is in the XY plane. In the output grapher it is possible to display the force as the cylinder slides around the curve. However if I understand it correctly the magnitude of the force will be in the direction perpendicular to the point of contact between the cylinder and the curve? In which case is it possible to actually find out the individual X and Y components of the force? That is to say the magnitude of the force in the X or Y plane of the curve?

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AutoCAD Inventor :: Glass Panel Simulation

Jan 18, 2013

Let me preface this by saying that we work mostly in the metal fabrication industry dealing with the elastic deformation of plastic materials that are isotropic so this question is a bit above my pay grade here.

Is it possible to simulate the stresses in a piece of glass in a simple beam scenario in Inventor (1/2" x 48" x 130" Tempered Glass)? I have a client that wants me to design a conference room table for him but I am highly uneducated about glass.

Is it possible to simulate? If not, is it possible to "fake" it and get semi-reliable results? We're at the conceptual stage here and we're curious which of our designs have a greater possibility of surviving the design validation process (which will include a glass expert at some point).

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AutoCAD Inventor :: Blue Screen While Doing A Simulation

May 21, 2012

Every now and then, but recently more then I want, I get a blue screen while doing a stress analysis.

I have a pretty simple assembly with just 2 parts in it. One of these parts is built as a multibody part. It can be that the blue screens started to occur after I made a multibody design, however I am not sure about that. I downloaded and installed Inventor R13.

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AutoCAD Inventor :: Dynamic Stress Simulation

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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AutoCAD Inventor :: Simulation Of Water From Bucket

Dec 16, 2013

I want to simulate the projectile of water from  the bucket while tilting the bucket is it possible to make such type of simulation in inventor 2012?

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AutoCAD Inventor :: Difference In Dynamic Simulation

Jul 25, 2013

why there is huge difference in Dynamic Simulation results when you use two different input methods? I used input grapher and in linear ramp, I entered input (time/ distance) manually for 6 points and ran simulation. Then I used Spline and used a text file to enter SAME data and it gave me at least 10 times different results. Can't figure out why this difference. This changes my entire design.

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AutoCAD Inventor :: Dynamic Simulation / Parameter Value Is Out Of Bounds

Dec 13, 2011

I have a dynamic simulation which seems to have corrupted itself. I have a number of Revolution joints which are torsional springs. I’ve enabled joint torque and set a spring stiffness and a free position (+15 deg). Then on the ‘initial condition’ page I’ve set Max (+45 deg) and Min(-15 deg) Bounds on rotation angle and set a stiffness 10x the spring stiffness to simulate the end stops of my torsional spring. The initial position is +12 deg. This was working just fine but since I’ve added a couple more parts (nowhere near these springs) I constantly get the message “The parameter xxx value is out of bounds”. Where xxx is the ‘Initial position’ of the joint. If I edit the joint and untick the Bounds section the message goes away but if I tick it (which I need for my simulation) I get the error message as soon as I pick OK. The position is NOT out of bounds?

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AutoCAD Inventor :: Start Simulation Button Not Working

Nov 23, 2011

When I select "Start Simulation" from the Add-Ins tab, nothing happens.  The hourglass comes up for a split second, but nothing launches.  We have Simulation 2012 Mechanical installed on the machines.  I have tried with both parts & assemblies. Obviously we can launch both applications separately but it's nice to go back and forth using the quick launch.

The machines are both Windows 7 Pro (latest service packs) as well as Inventor & Simulation 2012 (Product Design Suite Premium to be exact.)  Inventor has the latest service pack SP1 installed.  This did work in previous versions of Inventor.

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AutoCAD Inventor :: Thinning Of Cylindrical Objects After Simulation

Nov 26, 2013

Is it possible to show the deformed nature of a shaft  after loading along its axis and simulation of the part. If you take as an example a rod of Plasticine and stretch it you will see the center section thinning,the same laws apply to a rod of steel during stretching,why is it that this is not shown during the

simulation of the part,is it mesh settings or something that is not built into the analysis. When one applies loadings to sheet metal the deformation is clearly shown.

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AutoCAD Inventor :: Rebound Of Ball - Dynamic Simulation

Jul 24, 2013

How to simulate rebound  of a ball over inner surface of polyhedral body. (In gravity field). How to get all trajectory for given time interval.

And is it possible to get movie of falling of several balls onto the surface in Inventor Dynamic Simulator?

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AutoCAD Inventor :: Stress Analysis Simulation For Explosion

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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AutoCAD Inventor :: 2 Axis Robot Dynamic Simulation

May 7, 2013

I am working on 2 Axis Robot dynamic Simulation. It is suppose to lift weight up by 22" travel horizontally and bring down 22". My input is positions (I noted down angles at four corners for both arms and used them in Input Imposed Motion.) In the simulaiton run, movement is not in a straight line. It kinda moves in a curve. How can I get it perfectly straight.

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AutoCAD Inventor :: Free Falling Body Simulation

Feb 2, 2012

I have a track that uses gravity to pull a ball along it. I have gravity entered in my simuation but I cannot get the ball to move. How can I give the ball the ability to move in each direction.

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AutoCAD Inventor :: 2011 - FEA Bolt Head Simulation

Feb 18, 2011

I've been working with Inventor 2011 - Pro and have not had any success with utilizing a bolted connection (blind hole) in an FEA stress analysis. I have reviewed and one suggestion involved a using a bolt placed "as custom" instead of "as standard". It appears however that there is a default setting that I currently have which doesn't allow this as a selection.

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AutoCAD Inventor :: Visual Style - Dynamic Simulation

Aug 19, 2013

I like "Shaded with edges", and I want the edges black. I have set up the display to this setting in Application Options, Display tab (Use application Settings), and Settings button. Excellent, that's nice. (I have also mapped the num pad 6 to that style, along with 5 is Shaded with hidden edges, and 4 is wire frame).

However, In Inventor 2014 Dynamic simulation, the visual style defaults to "Shaded" (no edges). Ok, i can live with that, I guess. I'll just hit NumPad 6 and it looks good again.

Ctrl-Tab to another open file, make a change or two, come back to the DynSim and - hang on, where are my edges? I can just hit 6 again, but should I have to? I haven't ever seen this display property changed when changing between files before.

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