AutoCAD Inventor :: Unable To Edit Degrees Of Freedom After Playing Simulation
Aug 5, 2013
I am not able to edit degrees of freedom (dof) after playing a simulation.
This is what I did:
Created a dynamic simulation and imposed motion on a prismatic joint.Edit dof and Input Grapher before playing the simulation.Play the simulation.After playing simulation for first time, dof and Input Grapher are dimmed (grayed out) and can not be edited.
Here are screen shots of the dimmed dof and Input Grapher:
I am using Inventor 2012. A simple example is attached.
If there is a way to change the size of the 3d glyphs which display the degrees of freedom of parts within an assembly ? I need to alter them to be slightly bigger.
This page mentions the degrees of freedom glyphs, but it doesn't say how to show them, and I couldn't find any ribbon button or context menu item that mentions them.
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).
I am working on Dynamic Simulation. I ran the simulation for 4 secs, in real time it took more than 4secs but on the screen it was showing it ran for 4 secs. Is it correct? Can we edit settings to make it run for real time 4 secs?
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?
In VS Pro 4, in edit mode, I get no sound when I play the project but sound is OK when I play the clip. Then if I switch on the sound mixer I get sound when I play the project.
I successfully created multiple hatch regions in a sketch on a section view in a drawing. I want to change or delete one of the hatch regions, but am unsuccessful. I clicked on Fill/Hatch Region and then selected the region that already has a hatch defined, but the dialog box does not show that these is a hatch defined.
If I click the hatch button it creates another hatch over the top of the current one and does not allow the current one to be deleted or changed. Of the four regions in my sketch, one works and the other three do not.
I try to edit the table of an iPart via a spreadsheet (EXCEL 2010) and it does not launch EXCEL. I saw other posts with changing the registery and I am not too confident on what to remove or even how to do it.
I can not edit the M text & field text in title box.My system is Windows Xp Professional 2002, Inventor 11.
I tried to install Microsoft Hotfix KB918118 as I did before, but I coulden't. System massege show my system is newer than that, so I do not need it. Then I installed Hotfix for text problem caused by Microsoft Hotfix KB918118. I can edit M Text now, but still I could not edit Field Text.
How do I get the export parcel ananlysis to show degrees minutes and seconds instead of the default decimal degreees. My direction settings are set to DMS, but I can't see where to change arc deltas...
I was trying to play around with the software to get to know it, and... well, I think I made something weird in it. Everything was flowing nicely when I was following the tutorial about Editing Objects: I created a box, I selected that edit poly option from the modify tab and I could edit vertices totally nicely.
But then, I really don't know what happened, but, I don't know exactly when, I suddenly could not move the vertices AT ALL. They are pretty visible, but when I select them, they turn red and the axis are not editable! I'm so confused! I can edit the axis very normally if I'm using an option like Select and Move but... With the edit poly thing I just cannot! I tried everything I thought of: Made a new box, restarted the program, restarted the PC! But NOTHING worked.
EDIT: It took me almost an hour to figure out I wasn’t selecting the Select and Move tool!
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'.
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)
[code]....
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.
I have a tube, approximately 16" O.D., 14" high, and 1/8" thick. This is all a single part.
I'm trying to cut 3.5" wide and 4" tall slots around the top. The number of slots can be 1-6.
I'm driving the size and slots from a spreadsheet.
The orientation of the slots can have the first slot anywhere from 0 to 360 degrees. (FWIW, the spreadsheet redefines 0 and .0001 and 360 and 359.99).
Anyhow, as long as the first slot is between 0-180, it works just great. Once you pass 180, however, the verticals of the sketch flip so it's barely cutting the notch at all.
To make the cuts i've created a sketch off the top of the cylinder and drawn a construction line at 0 and another and put a driven dimension between them to set the correct position of the angle. I think create a workplane off that line tanget it to it's end point. At that point, draw sketch, extrude, etc.
I've also create a workplan off one of the origin planes and the origin Y axis that's perpendicular to the notch (angle driven by spreadsheet and equation in workplanes angle offset). Offset a 2nd plane tangent to the O.D. of the tube, created a sketch, extrude etc.
In both instances, when the angle crosses 180 degrees, the sketch flips on me.
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?
Is this type of gravity experiment possible with dynamic simulation?
[URL].........
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.
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?
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.
I am playing with traces in dynamic simulation and in the output grapher i get values for position like:
P P(x) P(y) P(z)
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?
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.
Example:
In Output Grapher
Time (s)Force(N) 0.0118955.66 0.0219500.88
In the vector from API
0.01 1895566 0.02 1950088
is there a way to correct this? I'm getting many force and movement info, so I don't know which ones are reliable.
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?
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?
