Table 11 Numerical comparison results.

From: Study on the fastening characteristics of preformed helical fittings considering the surface effect of transmission lines

Operating condition

The ratio of force

The ratio of the fourth power of preformed armor rod diameter

Error rate (%)

1/2

5.77

5.06

12.28

3/4

3.11

3.16

1.57

5/6

3.63

3.16

12.85

7/8

2.86

3.16

10.59

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