Issue 29

G. Maurelli et alii, Frattura ed Integrità Strutturale, 29 (2014) 351-363; DOI: 10.3221/IGF-ESIS.29.31

1.6

0.02

2 3 elements 2 4 elements 2 5 elements 2 6 elements

1.4

0.0195

1.2

0.019

1 (s)

1

0.0185

0.8

1 (s)

F

0.018

0.6

Optimal Density − F

0.0175

0.4

0.017

0.2

0

0.0165

0

1

2

3

4

5

6

7

8

0

10

20

30

40

50

60

70

Beam axis

Number of Elements

s F : Convergence vs number of elements (left) – Optimal densities vs number of elements (right).

Figure 8 : 1

−1.95

1.4

2 3 elements 2 4 elements 2 5 elements 2 6 elements

−2

1.2

−2.05

1

−2.1

2 (s)

−2.15

0.8

−2.2

2 (s)

F

0.6

−2.25

−2.3

0.4

Optimal Density − F

−2.35

0.2

−2.4

−2.45

0

0

10

20

30

40

50

60

70

0

1

2

3

4

5

6

7

8

Number of Elements

Beam axis

s F : Convergence vs number of elements (left) – Optimal densities vs number of elements (right).

Figure 9 : 2

−1

2

2 3 elements 2 4 elements 2 5 elements 2 6 elements

1.8

−2

1.6

1.4

−3

3 (s)

1.2

−4

1

3 (s)

F

0.8

−5

0.6

Optimal Density − F

0.4

−6

0.2

−7

0

0

10

20

30

40

50

60

70

0

1

2

3

4

5

6

7

8

Number of Elements

Beam axis

s F : Convergence vs number of elements (left) – Optimal densities vs number of elements (right).

Figure 10 : 3

360

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