I didn't know that Creo Simulate had a Fastener feature. I looked for it but the toolbar icon is greyed out. So probably my Creo license doesn't cover that feature.
I did drive up the mesh resolution and polynomial orders in Simulate.
But that indeed doesn't bring much improvement.
Yes, I am...
"The red stress is all on the surface - there is no depth to it."
- Yes, I noticed that too, but I thought maybe that stress on the surface is enough to cause small local ruptures and initiate cracks, that might increase in size?
"Deflection of your "threads", which are unsupported by the nut...
Yes, you are right.
A bolt has a complex stress pattern when loaded.
But it was the only mechanical component I could think of that has both a known and defined shape, and a known maximum mechanical load. That's why I wanted to see what that gives as 'results' when simulating this by FEA.
If...
Sorry if my explanation in my first post wasn't clear enough.
I used a bolt to model and calculate stresses because it is a 'known safe' component, if you don't apply larger than allowed loads.
Knowing this, I wanted to see what (peak) stresses appear in my simulation of the bolt and how they...
I am designing some components that are subject to forces and pressures. So I need to calculate and check if the strength of these components is okay to be safe.
I am doing this by Finite Element Analysis (FEA) in Creo Parametric (Simulate module).
Doing FEA is one thing. Interpreting the...
Good idea, Ted.
In fact, I suggested this idea some time ago, but I forgot to follow up on this.
I will introduce the idea again.
It certainly would be the simplest solution.
@3DDave.
Good idea. Do you mean something like this?
Making the chamfer on the inside would be best because it does not introduce possible leakage.
Problem is, that it is so tiny. The central hole diameter is only 1 mm (0.039").
Making the chamfer on the outside could be a cause of leakage...
Hi all,
I have an annoying sealing problem.
I have a test setup where a robot takes a series of plastic DUT's (Devices Under Test) one by one, and presses them against an air nozzle.
The DUT's are then subjected to an air pressure and a temperature range. The seal between the DUT and the nozzle...
Thanks a lot, both, for your input.
I will use this design then.
Thanks also for the link to the Parker O-ring handbook.
Most of my o-ring seals are for static applications, so I usually take a fairly high compression ratio. Usually from 15 to 25% (o-ring thickness vs groove depth). Air...
Hi all,
I am considering the following design to seal a chamber (holding compressed air of 70 bar (~1000 psi)) using an o-ring.
I would like your advice on this.
See the attached sketch.
I have only sketched half the construction. It is pretty much symmetrical around the vertical axis, so...
The gap below is due to the fact that there will be 3 coilpairs at an angle of 120°. The picture before the last one is a top view and this shows the principle.
So, at the bottom in the center, 6 cores will come together. I could probably reduce the size of the gap. If I use laminated mu metal...
@hacksaw:
That is the value I have used so far in my simulations, but especially with the high temperature, I think this value might be a bit optimistic.
I found that for transformer design, the current density is typically kept between 2.5 to 4 Amps per sq. mm of wire cross section.
For a...
@electricpete:
This is my new design.
Note that this is a side view (planar model). So the coil axes are vertical.
With this design, I can make the coils bigger and also move them away from the 'hotspot' to a 'colder' place.
I could even incorporate some kind of thermal shield between the...
