Table 1

Physical parameters of the cylinders used in the three series of experiments.

physical parameterseries 1 and 2series 3
outer cylinder diameter, Do (mm)25.415.6
inner cylinder diameter, Di (mm)09.4
length, L (mm)520435
mass per unit length, m (kg m−1)0.5770.1445
flexural rigidity, EI (N m2)0.05590.0065