Civil Engineering Reference
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100
˃
z
= 1069 N/mm
2
˃
z
= 641 N/mm
2
D/d = 63
B
60
50
30
20
10
B
6 max
5
3
2
1
300
200
D/d = 25
˃
z
= 641N/mm
2
˃
z
= 321N/mm
2
˃
z
= 160N/mm
2
100
50
30
20
B
60
10
B
6 max
5
3
2
1
200
˃
z
= 160N/mm
2
˃
z
= 80N/mm
2
D/d = 10
100
˃
z
= 416N/mm
2
50
Filler 8
(19+6F)
−
SFC
S
D
30
B
60
sZ bright
d
m
= 16.4 mm
R
m
= 1653 N/mm
2
A
m
= 93.5 mm
2
I = 2
20
10
30 d
5
B
6 max
sheave steel hardened, r = 0.53 d
rope lubricated before test
3
2
1
3
46
10
4
46
10
5
2
3
46
10
6
2
2
3
number of bending cycles N
Fig. 3.69
Growth of the number of wire breaks of a Filler rope under different loads, Feyrer
(
1983c
)
Gräbner and Schmidt (
1979
), and Feyrer (
1983c
) and for outer and inner wire
breaks in Oplatka (
1969
), Babel (
1980
) and Jahne (
1992
).
In wire ropes with longer bending zones, the weakening of the rope breaking
force is related to the accumulation of wire breaks in critical rope lengths. The
critical rope length depends on the rope length where a broken wire once more
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