Wire Ropes Under Tensile Load - Wire Ropes: Tension, Endurance, Reliability - page 155

1400

1200

1000

800

600

Draht 1.30 mm ˆ

Draht 1,75 und

400

2,50 mm ˆ

Draht 2.10 mm ˆ

Litze
Seil

200

0

0

200 400 600 800 1000 1200 1400

middle stress ˃ m in N/mm 2

Fig. 2.42 Smith diagram for a Warrington-Seale rope 6 9 36-FC-sZ in comparison with the
strands and wires, Setzer (1978)

Fig. 2.43 Stress range in
outside wires of a
Warrington-Seale rope in
comparison to straight wires
of the same diameter at the
number of load cycles
N = 10 6

1200

N/mm 2

2 ˃ zA (straight wire)

Q = 50%

1000

900

800

700

2 ˃ zA (outer wire

in rope)

1%

600

500

50%

400

99%

300

Seale rope 6 36-IWRC-sZ
(from regression Wehking,Klöpfer + Casey)
R 0 = 1770 N/mm 2 , d = 16 mm,

Warrington −

200

ʴ = 0.92 mm

100

0

0 N/mm 2 700

100 200 300 400 500

lower stress ˃ z,lower