geometric stress concentration factor
Grooved shaft in bending
Dimension ratio D/d
1.01
1.02
1.03
1.05
1.07
1.10
1.12
1.15
1.20
1.30
1.50
2.00
10
Dimension ratio r/d
Coefficient A
Coefficient b
Geometric stress concentration Kt
1)
1)
Stress concentration factor K
t
for a grooved shaft in tension: K
t
=A(r/d)^b
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