Need Help

[aminhas]

Hello  All,
                     Hope all is well; I need to know how to calculate the Rope wires core and strands wires dia the outer dia is .0195" I have attached the picture for references.

With Best Regards,

Adnan

[VladimirN]

Your message is missing an attachment.

[aminhas]

Sir,

      sorry now I was attached please check

[Pettersson]

Draw it in the Sketcher and measure?

[KenFarley]

Let's say we have N wires around the core, outer diameter of bundle is D.

Assumed outer strands are all touching adjacent outer wire, plus touching inner "core" wire.

Let's say outer strands have diameter B, inner core is diameter C.

Geometry shows the following two equalities:

D = 2B + C

B = (C X SIN(180/N) / (1 - SIN(180/N))

For a given D, you can solve for C, which is algebraically not so tidy, but given by:

C = D / ((2 X SIN(180/N) / (1-SIN(180/N) + 1)

For your given example, this yields C = 0.0506, B = 0.0722