Wire Ropes

Question 1

Determine the tension for Ft in the rope

Answer 1

Ft = [(W/m) + w*l] * [ 1+ (a/g) ]

Question 2

Determine the equivalent bending force Fb in the rope

Answer 2

Fb = [ ErdwAm] / [ D ]

Question 3

Determine the ultimate tensile force Fu in the rope

Answer 3

Fu = Su * Anom

Question 4

Determine the tension force due to fatigue Ff

Answer 4

Ff = [ (P/Su) * (Su) * D*d] / 2

Question 5

Determine factor of safety due to static loading

Answer 5

ns = [ Fu - Fb] / [Ft]

Question 6

Determine the factor of safety nf

Answer 6

nf = [Ff - Fb] / [Ft]