AutoCAD Inventor :: Adding Force In Frame Analysis?
May 2, 2013
I have a question regarding adding a force constraint in the Inventor frame analysis environment. When I add the fixed constraint to the beam the orientation indicator is incorrect - the square indicator being not parallel to the base of the beam. I would like to know why this is and as I am relatively new to frame analysis if I am doing something wrong. I have attached a screen shot of the placement of the constraint on the beam.
Autodesk Inventor Professional 2013 SP2 64-Bit Edition
Windows 7 HP Z400, Intel Xeon W3550 3.07GHz
12.0GB RAM, ATI FirePro V4800 (FireGL)
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Jun 14, 2013
I am trying to run a Frame analysis on a beam structure. I wanted a specific yield stress for the components that make up the beam. So I created a new material and changed the yield stress and change my beam components to that new material. However when I run the simulation the yield stress is not what I made it. Is this allowed?
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Dec 17, 2012
We are projecting a support for one mirror of our Infrared beam line. The support is a block with a rotational weak link and that needs to be rotated about +/- 1°. I would like to know a way to insert this angular displacement and get the stress in the weak link area. I don't have the moment loads and components.
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Apr 17, 2013
Is it possible to run force analysis on my part in Inventor? I have used the force analysis before, but never for something so complex in shape. My main issues are constraining the base of the part and applying forces. I tried thickening sections of the part in order to apply a force/constraint, but now Inventor won't recognize the thickened parts as connected to the main body.
On a side note, it won't let me attach my file, which is 122 MB. Is it too large?
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May 3, 2013
I have created a report from a frame analysis of an arrangement of I-Beam steelwork. I need to check that I have placed the nodes in the right order and this is reflected in the results of the report. I have the parent and child nodes connected at the ends of the beams as shown on the attached screen shot. I'm interested to know if the order in which I have selected the nods makes any difference to the results. There a 3 node connection points at each corner section.
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Jan 27, 2013
I am trying to run a simulation on a 4 layer part that has two base layers of I-beams, a frame I made in the frame generator (below) and a solid sheet on top. I am having some issues with the FEA side and was curios to see if the frame analysis tool would yield the same results as the stress analysis simulation. For the frame generator I saw 4 times the amount of deflection despite using (what I believe) are similar loading and constraints, however now I am unsure if I can trust to run an FEA simulation with a frame generated component. The frame is made up of 2 inch steel box beam with a 0.25 inch wall thickness. For the frame analysis package, I have applied a pressure that equates to a 70 kN load across four different sections of the frame. Supports have been placed under all four corners, with 1 being fixed and the other 3 free to move. For the FEA simulation, I applied a similar pressure by creating 2 inch wide plates and applying the same pressure at the same four points. There are also 2 inch square pads under the four corners of the frame with one edge of one pad being fixed and the bottom of the pads having a frictionless constraint. There are separation contacts between both the pressure plates on top of the frame and the frame as well as between the pads and the frame.
with the frame generator is that all the segments of the frame are bonded together (under contacts) which makes sense since they are welded together. However when I put a sheet on top of the frame, there are 3 contact points created between each beam on the frame and the sheet (one on the face of the frame that is in contact with the sheet and the other two on the rounds of the frame and the sheet, even though the rounds are not actually in contact with the sheet). Either way, I am seeing deflections of less than 0.1 mm when a 70 kN load is applied which I know is not right and just want to know if using a frame generated component is not possible with an FEA simulation.
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Sep 11, 2012
I've attached file. This is trestle and SWL(safety work load) is 2T. How can understandable that this load is going to be withstand by trestle.
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Jul 5, 2013
Having an assembly, modeled in the frame generator, then with some additional parts (ribs, plates, etc) added to the assembly as parts and constrained with assembly constraints.. which is the best way to do a frame analysis with the frame analysis enviroment for considering the all structure (frame generators parts + the additional enforcing parts) ?
The assembly look like for example, to this (modeled in autocad).
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Oct 8, 2012
explain the circumstances where 'Release' is applied to a beam (node?) when using the Frame Analysis tool.
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Sep 23, 2010
When I go to Environments>Frame Analysis, I used to get a menu for Constraints, Loads and other settings (similar to the Stress Analyisis menu). I don't get that now. I can right-click on an existing simulation and add constraints and loads, but I would really like to get the menu back.
I can go to tools>Customize, Toolbars tab and Frame Analysis Panel is there. I can click Show and it will show the panel but it stays up all the time. Not what I want.
I have tried resetting the menu, repair installing Inventor and Reinstalling Inventor, but still not joy. How do I get this back to the original setting so that it comes up when I select Frame Analysis?
This is in 2011.
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Oct 10, 2012
I understand that in a normal part to apply a load to a face is to make it a UDL (uniformly distributed load) by default. To apply a point load, I was told to create a small sketch and use it to split a face to create, in effect, a small face on which to apply a load, effectively making it a point load.
Now in the frame analysis environment, there is clearly an option for 'force' and one for 'continuous force' which the description clearly describes as a uniformly distributed load. However, when I run the simulation (on a 2m long 100mm x 50mm x 4mm Rectangular hollow beam) with a normal load in the middle of the beam (1m offset); the maximum moment comes out at 500000 Nmm or 500 Nm. By my reckoning the moment should be 1000 Nm as the basic formula for a moment from a point load is M = F*D (Moment = Force * Distance). However, to get 500 Nm, it looks like Inventor is using M = (F*x^2)/2 where x is the midspan of the beam (in this case 1m). .is a normal load in frame analysis the same as a UDL? If so..how to I make it a point load?
There are also some errors stating instability of type 2 at various nodes, I've used both Pinned and Floating constraints at either end of the beam.
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Sep 14, 2013
Does Frame Analysis uses the finite element method?
If it does, how to view/edit the mesh?
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Jan 23, 2012
I am busy constructing my own Structural Shapes Library in Inventor 1012.During the Authoring and Publishing step I mapped Cross Section Properties (Ixx, Iyy, Torsional Section Modulus, Torsional Rigidity Modulus etc) to set parameters in my iPart table.
I have noticed that once this part is then used in Frame Generator to create a simple beam and then analyzed with the Frame Analysis tool, the analysis tool uses the geometry of the part to calculate these properties.
Is there a way that I can force Inventor to use the properties in the iPart Tables? I am worried that any errors in creating the cross section geometry will be carried into the Cross Section Properties calculated by Inventor.
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Dec 30, 2010
I created a structural shape profile for use in a project. It is square tube with radiused corners, very similar to "ANSI/AISC (Rolled Steel) Structural Tubing Square" in the content center, but mine is 1 inch square with 0.065 inch walls.
I've made a chassis out of my custom tubing. When I run a frame analysis on it, I get an error/warning stating that the torsional section modulus is zero, because I didn't fill in the value when I generated the frame. How do I calculate that value?
I've attached the tube that I used to make the structural shape.
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Nov 29, 2010
Simulation Frame analysis crashed when choose button Simulate. Write failed to connect solver.
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Jan 6, 2012
I have tried the Frame Analysis for the first time and quit from this option as requested.
BUT now the subassemly consisting frame and all its parts are grey even after restarting Inventor.
Here is some bug. [URL] ....
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Jul 27, 2012
adding constraints to assemblies, in particular which choice of force constraint to add when using a bolted connection.
My scenario - I have a steel tube bolted to a plate which I have performed a stress analysis on. I have opted for the pin constraint where the tube is bolted to the plate and selected the bolt this option to add the constraints. This to me would seem like the best choice as the bolt is held by this constraint.
Autodesk Inventor Professional 2013 SP2 64-Bit Edition
Windows 7 HP Z400, Intel Xeon W3550 3.07GHz
12.0GB RAM, ATI FirePro V4800 (FireGL)
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Jan 28, 2013
I can publish a part containing a user text parameter to the content centre for use in frame generator however when I go to insert that part an error as per the attached screen shot.
To re-create the error you have to follow the below steps.
Create a part with a text user parameterPublish for use in frame generator.Create frame with the part and an error will be created as per the attached screenshot.
Is there a way to work around this error being created and use parts with text user parameters in Frame Generator?
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Jul 17, 2013
I have a wire trough that we typically use on all our units. Instead of modelling each trough as it's own separate part to length, I would like to add this part to frame generator for tracking there cut lengths etc...
A few items, there is two sizes that we use, but for now I will work with just one.
I have modeled the part and renamed the important parameters.
-WIDTH - stays the same
-HEIGHT - stays the same
-LENGTH - adjusted by frame generator
-RIBS - the part has 6 currently, but there is a rib added for every 1/2 inch. it is a rectangular pattern
-SLOTS - will be added to the trough every 2 inches of length, it is a rectangular pattern
-SLOT_DISTANCE - is 2 inches and never changes, if the trough is cut on a slot, which ever is easiest, to show half a slot or none, doesn't matter, this is just for a visual and BOM reference
I found a video that shows me how to publish parts to FG, but I am stuck for the iLogic part. Part attached.
Inventor Professional 2014-Update 2 - AutoCAD Electrical 2014
Win7-x64 | ASUS P8Z77-V | i7 3770 -3.4 GHz | 32GB RAM |
240GB SSD | nVidia GTX 670 4GB - 320.49
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May 8, 2012
When I add a profile to Custom Centre to be used in a frame generator, in Base Qty by default it comes up as in, I want it Each. Where to change it?
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Mar 8, 2011
I basically projected honeycomb pattern on to the skin of the addition on the existing building from CAD, then god ALOT of splines.It was very laggy and slow, but I got both the splines and the skin imported in max.
I was trying to render it, but it kept giving me an error message. I can't even do preview of this thing because as soon as i check the 'view in the viewport' checkbox, it gives me the exact same message and closes max.I have to render this with some thickness... AND bunch of other stuff together within the same render.The file size is 17mb, and it has one layer for the skin another layer for the entire splines.
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Feb 21, 2012
I was working in CAD wire-frame and I'm drawing a small plate 230*60*15, is there any way to turn this into a solid object or add edges to it, so it appears as 1 object?
I realise you can draw a simple 2d line and extrude the edges but what i want to know is can you add surfaces to the wire frame.
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May 22, 2013
After using Custom Profile for Frame Generator, the Part List will show total length, not individually. How to split these frame members?
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May 20, 2013
I created an extruded aluminium profile (attached file: Item Profile 8 80x80) which I published into the Content Center. When using this profile in a frame design, and using the Trim To Frame command, the profiles are trimmed at a weird angle (attached pdf file).
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Apr 30, 2013
After using Custom Profile for Frame Generator, the Part List will show total length, not individually. how to split these frame members?
Inventor Professional 2013 SP1.1
Windows 7 Pro 64-bit, SP1
HP EliteBook 8460w; 8 GB RAM; i7 - 2.0 GHz; AMD Firepro M3900 -1 GB
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Dec 13, 2011
There should be a way to Notch a straight frame to a curved frame! I want to laser cut the tube, so I really need to trim one tube to a curve tube.
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Jul 26, 2012
I come across this problem from time to time and generally either just ignore it, if the detail is destined for in house manufacture, or alter it in autocad if it's destined for exterior suppliers.
Our guard frames are manufactured from extruded aluminum section (made by a company called palletti) I have when needed created a new frame generator frame member for each new x-section that we wish to use. I then draw a 2d sketch for the base frame skeleton and then a 3d sketch for all the frame work above. This I then use in an assembly to create the framework. This framework assembly then goes into a second assembly where the framework is then adorned with all the accoutrements that make up a guard frame that we can then order as an assembled frame, panels feet, hinges et al.
When placing the views for the detailing of the second assembly sometimes the view will show the wrong length for one or some of the frame members.
;note how the left and right views are different and how some of the frame members are elongated on the lh view.
I'm guessing its because of the home grown frame members but all seems to work well other wise and this only happens infrequently.
HP z210 16Gb ATI FirePro5800
Autodesk Produst design Suite 2012
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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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Aug 29, 2012
I want to force a saveas from an external app using code as below:-
If OApp.Ready Then
Try
Call oDoc.SaveAs(File_Full_Name, True)
......
However, Inventor invariably crashes at this point - especially if panning a model. Is there a way I can either lock Inventor from the user whilst the save is happening or check that no mouse or keyboard activity is in use?
I have tried monitoring the status bar text for "Ready" but tihs is unreliable.
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Feb 27, 2013
How can I force all users in a domain to load the same add-ins with Inventor Professional 2012?
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Oct 10, 2013
When I click the Force command in the LOADS panel when doing a Frame Analysis, I don't get a dialog box. All I get is a select origin box with an arrow. There is no way to change the Magnitude value or the Angle of Plane as per instructions in the tutorial. I have tried numerous ways to get a dialog box to appear, but I can't find out how. why I am not getting a Dialog box?
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