σ
H
=
MPa
S
Hmin
=
Z
N
=
Z
R
=
Z
L
=
Z
x
=
Z
w
=
σ
F1
=
MPa
σ
F2
=
MPa
S
Fmin
=
Y
N1
=
Y
N2
=
Y
δ1
=
Y
δ2
=
Y
R1
=
Y
R2
=
Y
x1
=
Y
x2
=
σ
Hnec
=
MPa
σ
Fnec
=
MPa