"Here it is"
In Situ Analysis for Rhino
Rob Zavatsky's Discussions
Simulating Pin Connections
13 Replies
I'm working on a lifting rig under very high loads. I'm trying to simulate the pin connections at the links for each part of the frame. As I understand it, SnS does not do linkages just yet so I'm…Continue
Started this discussion. Last reply by Bob Johansson Feb 16.
Rob Zavatsky's Page
Latest Activity
Bob Johansson replied to Rob Zavatsky's discussion 'Simulating Pin Connections'
"Rule of thumb:
The center ofthe hole should be located no closer
than two diameters from the edge of the plate.
Is that right?"
Rob Zavatsky replied to Rob Zavatsky's discussion 'Simulating Pin Connections'
"That's why I've gone throught the hand calcs to verify the results."
Bob Johansson replied to Rob Zavatsky's discussion 'Simulating Pin Connections'
"I design stuff like that for the oil industry all the time.
Being legally liable is a bit stressfull at times.
Bob
"
Rob Zavatsky replied to Rob Zavatsky's discussion 'Simulating Pin Connections'
"The lung needs to hold 224000 lb"
Bob Johansson replied to Rob Zavatsky's discussion 'Simulating Pin Connections'
"I retreived that lug , What magnitude of load are you
putting on it?"
Bob Johansson replied to Rob Zavatsky's discussion 'Simulating Pin Connections'
"Email me the model at JohanssonEngineering@Gmail.com
in Step203 format.
Thx,
Bob"
Rob Zavatsky replied to Rob Zavatsky's discussion 'Simulating Pin Connections'
"Bob,
Thanks, the model is posted to this forum in .3dm V5. Have at it.
-Rob"
Bob Johansson replied to Rob Zavatsky's discussion 'Simulating Pin Connections'
"Hi:
If you wanted to email me the lug I could put a pin into itand run
it in ANSYS using both a fictionless and rough contact. We could then compare
the results. Send me a message if you wanted to give this a try.
Thx,\
Bob"
Michael Freytag replied to Rob Zavatsky's discussion 'Simulating Pin Connections'
"Rob,
Off hand, I don't know what effect that would have on the stress distribution. You could try it pretty easily, but be careful to balance the forces if you do the restraint as I suggested.
~Michael"
Rob Zavatsky replied to Rob Zavatsky's discussion 'Simulating Pin Connections'
"Yes this makes sense now. Would there be any noticeable benefit to further dividing the load patch and applying an approximate sinusoidal distribution? I guess this is also one for the wish list, that is, uneven load distribution…"
Michael Freytag replied to Rob Zavatsky's discussion 'Simulating Pin Connections'
"Rob,
I assume you are restraining the contact patch of one bore and applying a load to the contact patch in the other. What happens in this scenario is that there is a non-physical stress concentration near the edge of the restrained…"
Bob Johansson replied to Rob Zavatsky's discussion 'Simulating Pin Connections'
"HI:
I love this question.
The pin load is represented by a sinusoidal
pressure distribution.
The loading force is distributed along the edge of the
hole in a shape represented by a sine series. In a sine
distribution…"
Rob Zavatsky posted a discussion
Simulating Pin Connections
I'm working on a lifting rig under very high loads. I'm trying to simulate the pin connections at the links for each part of the frame. As I understand it, SnS does not do linkages just yet so I'm trying to tackle this in a peice by peice fashion. I appear to be getting results that are well higher than what simple hand calculations would suggest. Anybody have any good advise about how to properly load holes to reduce artificial stressed caused by "puckering". …See More
Profile Information
- Occupation
- Professional
- What modeling, simulation and analysis tools do you use?
- Rhino, MultiFrame
Comment Wall
- No comments yet!
© 2012 Created by Michael Freytag.
