Normalized radius for web length of 4000 (m)

r/rc

1.0 - 3.7

Reference value for friction force

Fcr (kN)

50.0

Reference value for tangential stress

σθref (MPa)

8.0

Maximum tension limit

Twmax (N/m)

200

Minimum tension limit

Twmin (N/m)

0

Maximum nip-load limit

Nmax (N/m)

200

Minimum nip-load limit

Nmin (N/m)

0

Web thickness

hw (μm)

25

Web width

W (m)

1.0

Wound roll radial Young’s modulus

(Pa)

A = 123, n = 1.0

Wound roll circumferential Young’s modulus

Eθ (Pa)

5.18 × 109

Core young’s modulus

Ec (Pa)

17.0 × 109

Core radius

rc (m)

0.038

Winding velocity

V (m/min)

100

Coefficient of friction

Μeff

0.3