FEA of a hollow metal ball.
The case is-
1. hollow steel metal ball OD 200mm, ID 190mm
2. Outside surrounding uniform pressure 10 MPa.
3. The ball is floating in a kind of liquid, so the gravity is neglected.
How to run FEA on this ball? How to add fixed constraints.
I'm modeling cables running through a series of cable clamps. I'm working in an assembly with my structure as one part, clamps as seperate parts, and cables as separate parts. I modeled the clamps first and am using them to create my 3d spline to run the sweep. The clamps have moved several times and each time, the sweeps (cables) do not update to follow the new clamping path. I have tried multiple ways of solving this.
I've tried to redo the splines using "Include Geometry" and running the spline through the centers of the clamps. I've also deleted the constraints (which for some reason turn into fixed) and reapplied them as coincident constraints. However, once I setup these coincidences, they always change back to fixed.
In a last ditch method, I've created 2d sketches at EVERY clamping location (yes that's alot of sketches, time and effort) and projected the circular geometry to get a center point. This has seemed to work, but is so much work, there's no way we could use it regularly.
How does Inventor "Remove fix constraints" so quickly? Can this be replicated in iLogic?
The way I've previously done this requires looping through the constraint collection and deleting one at a time which may take a few minutes on a complex sketch, but when Inventor deletes fixed constraints throught the menu option it does it in a few seconds on the same sketch so Inventor must be able to select them all at once and delete them all at once. Is there a way to do this through the API or iLogic?
I am trying to make a Dynamic block for Circular Hollow Sections. So i have a block properties table with 3 columns.
SIze (description) | Outer Diameter | Thickness
i can add a diameter constraint to the OD no problem but how can i add a thickness constraint? i cant pick say a linear or horiz between the quadrants of each circle it does not let you.
Now clearly i could convert all my tabular data to Inner Diameter instead of Thickness but i was looking to see if there is a way i can do it like described?
Also - i think i could also do this with an equation in Parameters Manager but for some reason that does not open, every time i click it the dialog does not display nor does it show anything at command line, i know this means its maybe corrupt but i can afford the time to reinstall just now.
May I know how to pattern the ball in BALL SCREW assembly?
View 9 Replies View RelatedI need to drive more than one constraint at a time. The assembly consist of a hydraulic ram that pulls a cable which is routed around a few pullys and then pulls another linear moving member. I don't really care about modeling the cable right now, I just want the cylinder piston and the final member to move in unison. I can only drive one constraint at a time, so I figured I could relate the two constraints together by setting them equal to a parameter (variable), but that isn't working. Is it me or is driving multiple constraints at a time something that would be very useful for a lot of applications?
View 3 Replies View RelatedI have created the model in the picture in AutoCad, but I do not know how to create it in Inventor. In Inventor I Know how to extrude and draw 2d/3d sketches, but this simple model it is impossible to me.
It is a simple 3D part, no sheet metal or pipe. It is an structure. I have copied it sliced to make more clear the geometry that I am looking for create.
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?
I have turbine rotor blade designed as per the aerodynamic considerations. The profile i obtained from the company is completely solid, I would like to make it hollow with a wall thickess of 5 mm. I tried if with the Shell feature of Inventor, and Since the profile of the blade is in different planes twisted in different angles, the Shell is not working very well. I have tried it with loft with different cross sections, but i am not getting a completely accurate profile. Is there any tool which automatically recognises the outside profile and will make the Inside hollow also in Inventor?
View 1 Replies View RelatedWithin dynamic simulation, I am trying to have a ball follow a track made of (2) rods, I can do it if the rods are straight but I do not know how to properly apply joints to allow the ball to follow the tracks when they are turning. I need to do this within dynamic simulation because I also hope to add a chain and sprockets with a ball holder to bring the ball back up to the top.
View 7 Replies View RelatedI am working on a project for school. I created a trebuchet but the ball goes way to far. I believe it is beacse there is no air friction. I have spent days trying to figure this out. Is there anyway in inventor pro to apply air friction on something like a cannon ball?
View 3 Replies View RelatedEngineering drawing with dimensions for a ball joint? A .ipt file of a ball joint actuator will be the best.
View 8 Replies View RelatedI have a small section of hollow tube as an IV part which I need to cut to at one end to produce a tapered effect. Attached is a mark up of what I am trying to achieve with the hollow tube.
Inventor 2013 Product Design Suite Ultimate
Windows 7 Professional-64Bit 12GB RAM
Intel Xeon W3550 3.07GHz
Autodesk Inventor Professional 2013 SP2 64-Bit Edition
Windows 7 HP Z400, Intel Xeon W3550 3.07GHz
12.0GB RAM, ATI FirePro V4800 (FireGL)
I have a solid bar which has a diameter equal to the nternal dimensions of a SHS. I am trying to create a weld, basically to fill the gap with a weld. I tried a similar arrangement with a Circular Hollow Section and it worked perfectly. I have tried fillet and groove for the SHS but it will not accept it.
View 3 Replies View Relatedwhy Autodesk doesn't put Flanged Ball Valves in the content center? There are several other types of valves in there but no flanged valves. This type of valve is very common in the oil and gas industry and it just baffles me that there is nothing there for this type of valve.
I have used Inventor for several years and this has always been an issue.
I'm trying to create a model of a Golf club head. I need it to be hollow but I am unable to do this using the shell operation or by creating a surface and thickening the faces. I created the geometry by lofting a series of sketches. I think the nature of the geometry may be causing the problem.
View 1 Replies View Relatedplease see attached....how do i pattern holes all round the ball feature?
INV2012
I need insert a cylinder into inner diameter of a ball bearing, logically it must rotate with the bearing but no, the bearing outer diameter is fixed to a support and works well, but when i insert the cylinder into the ball bearing it's fixed completely and the cylinder rotate into the inner diameter.
View 9 Replies View RelatedSo i draw a body (or assembly) and i would like to invert what i draw ( tubing for fluid flow) to be hollow and make the hollow part solid, is there any way that i could do that?
View 1 Replies View RelatedAre there any generic flanged ball valves in the content center? I I see the globe and gate valves, but no ball valves.
View 4 Replies View RelatedI've been trying to model cut produced by a ball end mill taking an arbitrary 3D path. I know how to do this for 2D paths (and this has been discussed a couple of times on this forum), but I have had little to no success extending this to paths in 3D. I've attached an Inventor file that demonstrates what I want to do, it has an sketch that describes the tip of the end mill and the path that I want the center of the tip to trace out.
This seems like something that should be possible using sweep feature, but if it is then I have not found a way to get this to work. The issue is that I have not been able to effectively control the angle of the sweep plane with respect to the path. In reality, the normal of the plane should be equal to the tangent of the path with the z-component zeroed out.
However, if I sweep using the path and the "Path orientation" then it does not zero out the z-component, if I sweep using the path and the "Parallel orientation" it does not take the x&y tangent components, if I sweep using a guide rail or guide surfaces it also does not zero out the z-component.
In fact, the only way I could come up with to accomplish this would be to sweep the path in 2D and then to use a series of bend part features in order to put things into 3D. So far as I can tell this works, but back calculating the 2D curve is so backwards and laborious that I can't imagine using this for anything. In Solidworks this is relatively easy using the sweep solid feature .
Why can I not constrain placed objects with three constraints? Anything I place constrains with one constraint then is virtually fixed (without being) and cannot even be moved to allow for further constraining.
View 9 Replies View RelatedThe bug giving incorrect lenths of frames created on internal cutouts with fillets using merge hasnt been fixed in 2011 SP2 (64bit). Base part attached for testing.
Any chance of a hotfix?
I created a sketch on a 'fixed workplane' and extruded it. I would like to know if it is possible to move the workplane? I understand I can change the workplane if it is a 'plane by offset from plane'.
If moving a fixed workplane is possible, does the extruded features move along together?
I am creating an assembly where I need to add a light probe that is length X from a sensor to an LED. I would like to create a cable modeling this transition to make sure it can be routed around other components. I can't seem to find how to lock the length for the cable from point A to point B, it only changes based on what points I add on its path.
View 1 Replies View RelatedI've come across this many times now. When in an assembly, I create a sketch. I then try to project geometry and I will sometimes get this error:
"Cannot constrain or dimension reference or fixed geometry."
why I can't project edges/faces/points of certain parts?
The fixed width function did not work when I wanted to draw a fixed width rectangle. Is there a new way to do this in CS6?
View 4 Replies View RelatedI'm sure this has been asked many times but none of the queries I used brought up a similar question. My issue is that I recently spent a lot of time annotating a detail view with leaders attached to geometry, leaders not attached to geometry, and sketches constrained to geometry projected from the view.
I made some modifications to the model which didn't re-locate any of the components that I'd annotated, but somehow the detail view got shifted, and all of my leaders are pointing to the wrong place and the parts of my sketch that weren't constrained to geometry are in the wrong place as well. Some of the leaders seem to have held to their posts better than others, but for the most part my annotations are worthless and will need to be re-done.
Why do we not have the "=" (equals) constraint option in 3D Sketch mode? It seems like a very basic need for a constraint. Is there a reason why one should NOT want to have an "equal" constraint in a 3D Sketch?
View 3 Replies View RelatedAll I need to do for now is to align one part to the center axis of another part. Later I will constrain but for now I just need to see where the two meet so I can project geometry onto a draw surface. So, all I need to do is make their central axes coincide on one straight line.
I can achieve the same result by counting the various lengths but I'm hoping there's a simpler solution.
Assume a beam like the one in the picture below.
How must I configure the constraints?
The left constraints should be a "Fix constraint" on the edge(not the face) I assume.
But the right constraints must not fix all DOF's.
How can I configure the right constraint?