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Table 5

The values of experimentally obtained a, b, and S of bottom circular arcs.

In the 0° direction In the 45° direction


L = 108 mm, θ = 30°, T = 2.5 mm, on an 800-ton hydraulic press L = 112 mm, θ = 30°, T = 2.5 mm, on a 500-ton hydraulic press L = 108 mm, θ = 30°, T = 2.5 mm, on an 800-ton hydraulic press L = 112 mm, θ = 30°, T = 2.5 mm, on a 500-ton hydraulic press
a = 4.5 mm a = 1.5 mm a = 7.2 mm a = 4.4 mm
b = 4.1 mm b = 1.2 mm b = 6.3 mm b = 4.1 mm
S = 9.22 mm2 S = 0.90 mm2 S = 22.68 mm2 S = 18.04 mm2

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