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Modeling Wire Rope and Sheave

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malis

Mechanical
Nov 29, 2005
31
Is it possible to model the movement of a wire rope over a sheave. If not any ideas how to "fake it"


 
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Have you looked at Animator? What version do you have?


Chris
Systems Analyst, I.S.
SolidWorks/PDMWorks 05
AutoCAD 06
ctopher's home site (updated 06-21-05)
FAQ559-1100
FAQ559-716
 
The problem is having the wire rope, which i have modeled as a part, dynamically move over the sheave. SW 05
 
I've done it with configurations, start point/end point. I've never been able to model a dynamic wire/roller model.

[green]"I think there is a world market for maybe five computers."[/green]
Thomas Watson, chairman of IBM, 1943.
Have you read faq731-376 to make the best use of Eng-Tips Forums?
 
Thanks for all your advice, but i have found a way to make this work. Not sure my pea brain totally understands it, but it works
 
Hope this make sense, but my situation was a cylinder with a sheave mounted on the end and a rope going over it. I started with my cylinder assembly with limit mates for my stroke. I then inserted a new part and sketched in my centerline for the rope. Mated the fixed end to my anchor, made the sheave and rope end concentric and then put a arbritary dimension in from the anchor pt to the other end of the rope. Then used the equation editor and made the arbritary dimension equal to my limit mate. The only thing with this is that you have to hit refresh after you move the cylinder to the position you want. Still looking for a better way!!!

 
I'd guess you could find some help from Mike Wilson's examples:


He's got a variety of tricky things figured out posted there. The links above may give you some ideas on how to do this without a continuous rebuild.

Jeff Mowry
Reason trumps all. And awe trumps reason.
 
I just tried this with limit-mate, so this should help you a little. I made the min angle 1, and the max angle 359. Find the limit angle in the tree, probably "D1@LimitAngle1" and double-click it. Pick the dimension on the screen, and choose equations. For the equation, copy the limit-mate, and paste it after the equal sign, and then enter "+5" (without quotes). Your equation should look very similar to this:
Code:
  "D1@LimitAngle1" = "D1@LimitAngle1"+5
Now it will rotate 5 degrees after every rebuild.
You might be able to cut a part of code from "Ship in a Bottle" to rebuild "x" amount of times automatically.

Flores
SW06 SP3.0
 
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