Catenary mooring system

[Rob_Froeling]

I wonder if anyone has created a catenary mooring line in Inventor?

I tried to create one in Inventor 2016 using the theory from http://abc-moorings.weebly.com/catenary-calculator.html but somehow it seems to go wrong when I type in the equation. Before entering the equation I tried to use parameters for the calculation of the sub-formulas, ut I don't get what I need.....

Hiope someone can help me on this!

[JDMather]

Post screen shot of your formula entry.

I am sure this question has come up here before - a search might turn up prior discussions.

[Rob_Froeling]

For formulas see attachment

I used the formula for y in the equation editor, for the formula for b etc.I used the parameters

A screenshot of the ipt is not availabler at the moiment, because of the errors I didn't save it.

I did search for the subject, but got not the result I was looking for.

[JDMather]

---

@info wrote:

For formulas see attachment

A screenshot of the ipt is not available at the moment, because of the errors I didn't save it..

---

Of course - what I meant for you to attach is the screenshot of how you were entering the formula in Inventor.
I am not sure how anyone is to guess what errors you have in your formula without seeing the forumula that you entered.

[Ray_Feiler]

I got this in 2005 and I do not remember the source. Maybe it will help you.

[Rob_Froeling]

@JDMather Of course I know what you mean, but I didn't have the time today to reproduce what I did.

I hope I have some time tomorrow in theafternoon to set up the ipt again.

I suspect it is a problem with units; When I look at the formula for "b" on the site I refered to, the unit for "b" should be 1/s2, but in the spreadsheet they present "b" is supposed to be unitless.

I have to dig in to it again, and will come back tomorrow.

[Rob_Froeling]

Thanks, Ray, for replying. I had a quick look, but that didn't tell me enough. I've got to look better at the formulas in your example to know if this is what I'm looking for.

[Ray_Feiler]

How about this?

http://forums.autodesk.com/t5/inventor-general-discussion/equation-for-catenary-curve/m-p/3763129/hi...

http://forums.autodesk.com/t5/inventor-general-discussion/catenary-curves/m-p/1666947/highlight/true...

[_andrew_roth_]

Man, I wish those links weren't dead right now. A search for catenary brought me here. Meanwhile whatever clever solutions exist on those posts are now withering in the ether...