How to make a rope
How to make a rope
(OP)
Really a cable. tiny aircraft cable.
I want to wrap the cable from a fixed end (on a moveable assy) thru a series of pulleys and intermediate surfaces to the business end where a linear force will be applied to operate the gizmo.
So a flexible cable of fixed length that can move the tip of the assembly by contracting a series of pulleys from a straight line to a "circle". one pulley is fixed and the rest move toward it. this single cable will have approx 8-10 different tangent constraints.
I'm using 2010 demo. Suggestions for tutorials or demos to get me going?
I want to wrap the cable from a fixed end (on a moveable assy) thru a series of pulleys and intermediate surfaces to the business end where a linear force will be applied to operate the gizmo.
So a flexible cable of fixed length that can move the tip of the assembly by contracting a series of pulleys from a straight line to a "circle". one pulley is fixed and the rest move toward it. this single cable will have approx 8-10 different tangent constraints.
I'm using 2010 demo. Suggestions for tutorials or demos to get me going?





RE: How to make a rope
However - assuming you know about the pulley series you can easily fake this using math, chiefly length constraints and parameter ratios for the lengths of your straight line segments. Using the arc-length tool (dimension both end points and the curved segment) you should be able to work out the round portions as well.
RE: How to make a rope
I could show it , but, it wont tell me anything. I have a linear(ish) arrangement of pulleys with pivot points between some pulleys, like a finger. when i contract the system (with the rope) does the end pulley arrangement contract first? do they all contract simultaneously? is there a sequential collapse?
this info won't come from faking the view. I know it will probably come in a protype, if it gets that far (not) but, still it would be nice to find out if we can do a rope.
RE: How to make a rope
I suspect a keen hand could build a mathematical model more quickly.
Cheers
Greg Locock
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RE: How to make a rope
You won't be able to do it with the rope as you want but you should be able to simulate the movements of the pulleys properly.
RE: How to make a rope