Issue 70

S.K. Shandiz et alii, Frattura ed Integrità Strutturale, 70 (2024) 24-54; DOI: 10.3221/IGF-ESIS.70.02





( d cos n x   (

r x

( )

))

(57)

i

i

i

In this relation, n i is the i th spatial frequency, d i is the surface irregularity amplitude, and  i is the random phase angle, which here is a uniform distribution within the range [0,2  ) [46]. Three classes A, B, and C, are considered here as representatives of rough road profiles (see Fig. 7).

(a)

(b)

(c) Figure 7: (a) Road profile class A, (b) Road profile class B, (c) Road profile class C

Vibration signal Laser sensors can be used to detect relative acceleration between the beam and the trailer axle (see Fig. 8). The beam acceleration below the trailer axle is calculated by subtracting this relative acceleration from the absolute acceleration of the trailer axle, which read as:

Figure 8: Sensors mounted on the trailer axle. Acceleration Sensor Laser Sensor

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