Issue 41

Ch. F. Markides et alii, Frattura ed Integrità Strutturale, 41 (2017) 396-411; DOI: 10.3221/IGF-ESIS.41.51

E [GPa] E ΄ [GPa] ν ΄ (= ν yx )

ν xy

δ 1

Materials

(<0.5)

“Fictitious” isotropic

75 20 25 30 35 40 45 50 55 60 65 70 75

75 15

0.30 0.30

0.30 0.12 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10

1 2 3 4 5 6 7 8 9

1.33 1.67 2.00 2.33 2.67 3.00 3.33 3.67 4.00 4.33 4.67 5.00

“Fictitious” “transtropic”

10 11 12

Table 1 : The mechanical properties of the materials considered.

-0.0005

ϕ o

=0 o

-0.0010

15 o 30 o 45 o 60 o 75 o 90 o

-0.0015 Normal astrain ε rr

-0.0020 (along the loading axis)

-0.0025

(a)

1

2

3

4

5

δ = E / E'

0.0012

ϕ o

=0 o

0.0006 Normal transverse strain ε θθ (perpendicular to the loading axis) 0.0009

15 o 30 o 45 o 60 o 75 o 90 o

0.0003

(b)

1

2

3

4

5

δ = E / E'

(b) strain on the anisotropy ratio δ for a series of ϕ o

(a) and transverse ε θθ

Figure 2 : The dependence of the normal radial ε rr

-values.

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