Wire Ropes, Elements and Definitions - Wire Ropes: Tension, Endurance, Reliability - page 27

Fig. 1.26 Shaped strands
(oval or triangular)

which is approximately the shape of an oval. Triangular strands and oval strands
are inserted in low-rotating or non-rotating ropes.

1.2.3 Compacted Strands

The compacted strand, Fig. 1.27 (symbol K) has been subjected to a compacting
process such as drawing, rolling or swaging whereby the shape of the wires and the
dimensions of the strand are modified. In the compacting process the mass M S of
the strand (with the actual strand diameter d S,m , the strand length l S and the strand
mass factor W S ) remains constant while the strand diameter, the strand length and
the length-related strand mass change

M S ¼ d S ; m l S W S ¼ m S ; comp l S ; comp :

Compacting Grade (proposal for the definition). The compacting grade C—
however—is only based on the metal portion of the strand cross-section, com-
pacted or not. The compacting grade is defined by

2

d S ; comp
d S ; m

C ¼ 1

: ð 1 : 4a Þ

In this equation d S,m is the measured diameter for the not compacted and d S,comp
for the compacted strand, both with the same length-related strand mass m S,comp .
That means that the diameter of the not compacted strand is given by
d S ; m ¼ m S ; comp W S :

Fig. 1.27 Compacted strand