Issue 29

J. Toti et alii, Frattura ed Integrità Strutturale, 29 (2014) 166-177; DOI: 10.3221/IGF-ESIS.29.15

F

d

h

t

w

r

s

x

y

l

Figure 1 : Geometry of the masonry arch.

f 1 [Hz]

f 2 [Hz]

Experimental

35.59 35.80

72.11 73.23

Numerical Error [%]

0.5 2.5 Table 1 : Comparisons between the first two experimental and numerical natural frequencies.

''  , experimentally measured and numerically evaluated,

Fig. 2 shows the direct comparison between modal curvatures

plotted along the ratio s/s A

, in which s and s A

being the curvilinear abscissa and the total length along the arch centerline,

respectively.

0.2 0.4 0.6 0.8 1

Experimental Mode 1 Experimental Mode 2 Numerical Mode 1 Numerical Mode 2

‐ ‐‐

0



-0.8 -0.6 -0.4 -0.2

-1

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

s/s

A

Figure 2 : Curvature mode shapes.

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